Commit Graph

9909 Commits

Author SHA1 Message Date
Owen Anderson
1b4a38646f Disable the call-deletion transformation introduced in r86975. Without
halting analysis, it is illegal to delete a call to a read-only function.
The correct solution is almost certainly to add a "must halt" attribute and
only allow deletions in its presence.

XFAIL the relevant testcase for now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102831 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 08:34:28 +00:00
Chris Lattner
bccb41afc8 fix PR5009 by making CGSCCPM realize that a call was devirtualized
if an indirect call site was removed and a direct one was added, not
just if an indirect call site was modified to be direct.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102830 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 06:38:43 +00:00
Chris Lattner
1951e108be rename test
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102829 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 06:34:13 +00:00
Chris Lattner
6da12e6767 Implement rdar://6295824 and PR6724 with two tiny changes
that can have a big effect :).  The first is to enable the
iterative SCC passmanager juice that kicks in when the
scc passmgr detects that a function pass has devirtualized
a call.  In this case, it will rerun all the passes it 
manages on the SCC, up to the iteration count limit (4). This
is useful because a function pass may devirualize a call, and
we want the inliner to inline it, or pruneeh to infer stuff
about it, etc.

The second patch is to add *all* call sites to the 
DevirtualizedCalls list the inliner uses.  This list is
about to get renamed, but the jist of this is that the 
inliner now reconsiders *all* inlined call sites as candidates
for further inlining.  The intuition is this that in cases 
like this:

f() { g(1); }     g(int x) { h(x); }

We analyze this bottom up, and may decide that it isn't 
profitable to inline H into G.  Next step, we decide that it is
profitable to inline G into F, and do so, which means that F 
now calls H.  Even though the call from G -> H may not have been
profitable to inline, the call from F -> H may be (in this case
because a constant allows folding etc).

In my spot checks, this doesn't have a big impact on code.  For
example, the LLC output for 252.eon grew from 0.02% (from
317252 to 317308) and 176.gcc actually shrunk by .3% (from 1525612
to 1520964 bytes).  252.eon never iterated in the SCC Passmgr,
176.gcc iterated at most 1 time.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102823 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 01:15:56 +00:00
Chris Lattner
159528702a The inliner has traditionally not considered call sites
that appear due to inlining a callee as candidates for
futher inlining, but a recent patch made it do this if
those call sites were indirect and became direct.

Unfortunately, in bizarre cases (see testcase) doing this
can cause us to infinitely inline mutually recursive
functions into callers not in the cycle.  Fix this by
keeping track of the inline history from which callsite
inline candidates got inlined from.

This shouldn't affect any "real world" code, but is required
for a follow on patch that is coming up next.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102822 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 01:05:10 +00:00
Bill Wendling
3f755d7ec6 Test failing too much on too many platforms.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102812 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 00:12:33 +00:00
Bill Wendling
1c2d7f1196 Maybe it needs sse2?
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102802 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-30 23:19:29 +00:00
Bill Wendling
6c84fdeb9c Force 64-bit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102800 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-30 22:45:20 +00:00
Chris Lattner
4b7b42c831 Dan recently disabled recursive inlining within a function, but we
were still inlining self-recursive functions into other functions.

Inlining a recursive function into itself has the potential to
reduce recursion depth by a factor of 2, inlining a recursive
function into something else reduces recursion depth by exactly 
1.  Since inlining a recursive function into something else is a
weird form of loop peeling, turn this off.

The deleted testcase was added by Dale in r62107, since then
we're leaning towards not inlining recursive stuff ever.  In any
case, if we like inlining recursive stuff, it should be done 
within the recursive function itself to get the algorithm 
recursion depth win.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102798 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-30 22:37:22 +00:00
Bill Wendling
d71bb56275 EXTRACT_VECTOR_ELT of an INSERT_VECTOR_ELT may have the same index, but the
indexes could be of a different value type. Or not even using the same SDNode
for the constant (weird, I know). Compare the actual values instead of the
pointers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102791 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-30 22:19:17 +00:00
Jakob Stoklund Olesen
8387d7db19 The local register allocator has to spill dirty callee saved registers before a
call that might throw. The landing pad assumes that all registers are in stack
slots.

We used to spill those dirty CSRs after the call, and the stack slots would be
wrong when arriving at the landing pad.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102770 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-30 21:19:29 +00:00
Devang Patel
0aa885d3ab Preserve debug info attached with call instruction while eliminating dead argument.
Radar 7927803


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102760 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-30 20:23:54 +00:00
Devang Patel
95dbda70c4 New test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102746 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-30 19:39:29 +00:00
Dan Gohman
5b61b3818a Add lint checks for invalid uses of memory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102733 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-30 19:05:00 +00:00
Dan Gohman
01baea3c2c Add -o /dev/null to some tests which don't care about their output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102722 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-30 17:42:30 +00:00
Evan Cheng
f2d36d91e2 Fix test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102694 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-30 06:00:56 +00:00
Evan Cheng
1361796dd0 Another sibcall bug. If caller and callee calling conventions differ, then it's only safe to do a tail call if the results are returned in the same way.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102683 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-30 01:12:32 +00:00
Jakob Stoklund Olesen
f07fc974d3 Reject really weird coalescer case when trying to merge identical subregisters
of different register classes. e.g.

  %reg1048:3<def> = EXTRACT_SUBREG %RAX<kill>, 3

Where %reg1048 is a GR32 register. This is not impossible to handle, but it is
pretty hard and very rare.

This should unbreak the dragonegg builder.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102672 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-29 23:47:46 +00:00
Evan Cheng
3f54c64a98 Load folding tail call should not use ebp / rbp after it's popped. PEI
should use esp / rsp to reference frame instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102596 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-29 05:08:22 +00:00
Kevin Enderby
9ac7282117 Fixed the word sized Bit Scan Forward/Reverse instructions, they needed the
Operand size override prefix to be part of their records.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102556 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-28 23:20:40 +00:00
Chris Lattner
c1c4595d1f fix this to work with objdir != srcdir
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102547 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-28 22:34:35 +00:00
Dale Johannesen
de5996e33a Fix comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102545 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-28 22:23:46 +00:00
Dale Johannesen
21a9bd91e9 Test for llvm-gcc checkin 102543.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102544 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-28 22:17:33 +00:00
Devang Patel
518e21ae8a Update tests. Now DBG_VALUE instruction is created only if alloca corresponding to llvm.dbg.declare is missing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102524 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-28 20:27:48 +00:00
Chris Lattner
f3f325b82f fix PR6112 - When globalopt (or any other pass) does RAUW(@G, %G),
metadata references in non-function-local MDNodes should drop to 
null.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102519 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-28 20:16:12 +00:00
Chris Lattner
e87f7bb50e Rework global alignment computation again. Now we do round up
alignment of globals to the preferred alignment, but only when
there is no section specified on the global (by far the common
case).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102515 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-28 19:58:07 +00:00
Evan Cheng
2bce5f4b56 Enable i16 to i32 promotion by default.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102493 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-28 08:30:49 +00:00
Evan Cheng
da3a8a647d Update tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102487 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-28 01:53:13 +00:00
Devang Patel
28ff35d030 Emit debug info for byval parameters.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102486 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-28 01:39:28 +00:00
Evan Cheng
ed33b13a10 Do not count kill, implicit_def instructions as printed instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102453 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-27 19:38:45 +00:00
Chris Lattner
4c4d0c0cc5 round zero-byte .zerofill directives up to 1 byte. This
should fix some "g++.dg-struct-layout-1" failures, 
rdar://7886017


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102421 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-27 07:41:44 +00:00
Dale Johannesen
caf6750455 Un-XFAIL this on ppc. My enabling of dbg_declare handling
in ISel fixed it.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102404 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-27 00:01:42 +00:00
Chris Lattner
ee9eb411ff on darwin empty functions need to codegen into something of non-zero length,
otherwise labels get incorrectly merged.  We handled this by emitting a 
".byte 0", but this isn't correct on thumb/arm targets where the text segment
needs to be a multiple of 2/4 bytes.  Handle this by emitting a noop.  This
is more gross than it should be because arm/ppc are not fully mc'ized yet.

This fixes rdar://7908505



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102400 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-26 23:37:21 +00:00
Bob Wilson
5dfa87ecc6 Handle register-to-register copies within the tGPR class.
Radar 7896289


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102396 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-26 23:20:08 +00:00
Devang Patel
5098da0a7e Use DW_AT_entry_pc instead of DW_AT_low_pc/DW_AT_high_pc pair. This simplifies debug range entries.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102394 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-26 22:54:28 +00:00
Dan Gohman
948c8a3e3d When checking whether the special handling for an addrec increment which
doesn't dominate the header is needed, don't check whether the increment
expression has computable loop evolution. While the operands of an
addrec are required to be loop-invariant, they're not required to 
dominate any part of the loop. This fixes PR6914.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102389 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-26 21:46:36 +00:00
Dan Gohman
585c40129f Add a comment to this test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102387 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-26 21:37:43 +00:00
Chris Lattner
567dd1f5d0 fix PR6921 a different way. Intead of increasing the
alignment of globals with a specified alignment, we fix
common variables to obey their alignment.  Add a comment
explaining why this behavior is important.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102365 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-26 18:46:46 +00:00
Chris Lattner
f74e25f60c Revert r102300/102301, which serious broke objc apps.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102359 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-26 18:30:45 +00:00
Chris Lattner
8581c260d3 fix PR6940: sitofp(undef) folds to 0.0, not undef.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102358 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-26 18:21:23 +00:00
Chris Lattner
84c6e60c02 testcase for PR6913
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102303 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-25 05:51:14 +00:00
Chris Lattner
ff1c0444ea this passes now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102301 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-25 05:49:31 +00:00
Chris Lattner
044698b39a Fix PR6921: globals were not getting correctly rounded up to their
preferred alignment unless they were common or some other special
case.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102300 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-25 05:30:43 +00:00
Dan Gohman
1d367988e2 Generalize LSR's OptimizeMax to handle the new kinds of max expressions
that indvars may use, now that indvars is recognizing le and ge loops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102235 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-24 03:13:44 +00:00
Dan Gohman
9f93d30a26 ScalarEvolution support for <= and >= loops.
Also, generalize ScalarEvolutions's min and max recognition to handle
some new forms of min and max that this change makes more common.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102234 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-24 03:09:42 +00:00
Chris Lattner
d46316e7ae no longer xfail
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102220 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-23 22:39:33 +00:00
Stuart Hastings
56dda57679 Per Chris, fuse four trivial tests using grep (r102199) into one that uses FileCheck.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102216 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-23 22:12:57 +00:00
Dan Gohman
6e8fd90602 Change TargetData's algorithm for computing defualt vector type
alignment to match what's used in clang and GCC for __alignof, rather
than trying to guess what Legalize is going to be doing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102206 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-23 19:41:15 +00:00
Stuart Hastings
e3ff9ba40c Add some missing x86 patterns for movdq2q. Fixes two (LLVM-)GCC DejaGNU testcases. Radar 6881029.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102199 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-23 19:03:32 +00:00
Chris Lattner
12104464f3 fix some failures my callgraph dump format change broke.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102197 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-23 18:38:40 +00:00
Chris Lattner
a56c1c5d4c testcase for the bug that required a patch to be reverted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102195 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-23 18:31:01 +00:00
Dan Gohman
fafb890ee2 Fix LSR to tolerate cases where ScalarEvolution initially
misses an opportunity to fold add operands, but folds them
after LSR has separated them out. This fixes rdar://7886751.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102157 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-23 01:55:05 +00:00
Chris Lattner
62cc838b90 disable my previous inliner patch, it appears to be busting self-host.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102153 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-23 00:41:03 +00:00
Chris Lattner
fe9af3b1f7 The inliner was choosing to not consider call sites
that appear in the SCC as a result of inlining as candidates
for inlining.  Change this so that it *does* consider call 
sites that change from being indirect to being direct as a
result of inlining.  This allows it to completely 
"devirtualize" the testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102146 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-22 23:37:35 +00:00
Jim Grosbach
3a1287b470 Update ARM DAGtoDAG for matching UBFX instruction for unsigned bitfield
extraction. This fixes PR5998.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102144 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-22 23:24:18 +00:00
Devang Patel
9517144f53 Remove the test for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102135 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-22 22:06:28 +00:00
Devang Patel
18ee3bb0b7 Adjust debug range offsets for isWeakForLinker() functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102127 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-22 20:52:00 +00:00
Chris Lattner
b61789d4dd add a DEBUG call so that -debug lists when CGSCCPM iterates.
Fix RefreshCallGraph to use CGN->replaceCallEdge instead of hand
rolling its own loop.  replaceCallEdge properly maintains the
reference counts of the nodes, fixing a crash exposed by the
iterative callgraph stuff.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102120 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-22 20:42:33 +00:00
Dan Gohman
ddb3eafc32 Don't attempt to analyze values which are obviously undef. This fixes some
assertion failures in extreme cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102042 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-22 01:35:11 +00:00
Evan Cheng
e3dd8550c6 Do not try to optimize a copy that has already been marked for deletion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102027 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-21 20:57:54 +00:00
Evan Cheng
e566763b19 Implement -disable-non-leaf-fp-elim which disable frame pointer elimination
optimization for non-leaf functions. This will be hooked up to gcc's
-momit-leaf-frame-pointer option. rdar://7886181


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101984 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-21 03:18:23 +00:00
Johnny Chen
52d2b0ed00 Thumb instructions which have reglist operands at the end and predicate operands
before reglist were not properly handled with respect to IT Block.  Fix that by
creating a new method ARMBasicMCBuilder::DoPredicateOperands() used by those
instructions for disassembly.  Add a test case.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101974 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-21 01:01:19 +00:00
Chris Lattner
08e322db8a Implement (but don't enable) PR6724 and rdar://6295824. In short,
we have RefreshCallGraph detect when a function pass devirtualizes
a call, and have CGSCCPassMgr iterate (up to a count) when this 
happens.  This allows (in the example) GVN to devirtualize the 
call in foo, then the inliner to inline it away.

This is not currently enabled because I haven't done any analysis
on the (potentially substantial) code size or performance impact of
doing this, and guess what, it exposes callgraph updating bugs in
various passes.  This is progress though, and you can play with it
by passing -max-cg-scc-iterations=5 to opt.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101973 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-21 00:47:40 +00:00
Evan Cheng
30fdb5c2ac - Clean up some crappy code which deals with coalescing of copies which look at
extract_subreg / insert_subreg, etc.
- Add support for more aggressive insert_subreg coalescing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101971 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-21 00:44:22 +00:00
Dan Gohman
d217cfcf46 Revert r101471. For tight recursive functions which have multiple
recursive callsites, inlining can reduce the number of calls by
exponential factors, as it does in
MultiSource/Benchmarks/Olden/treeadd. More involved heuristics
will be needed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101969 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-21 00:43:30 +00:00
Dan Gohman
bc7588eb68 Add another variant of this test which found a place where
CodeGen's ComputeMaskedBits was being over-conservative when computing
bits for an ADD.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101963 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-21 00:19:28 +00:00
Chris Lattner
d6139425f5 teach the x86 address matching stuff to handle
(shl (or x,c), 3) the same as (shl (add x, c), 3)
when x doesn't have any bits from c set.

This finishes off PR1135.  Before we compiled the block to:
to:

LBB0_3:                                 ## %bb
	cmpb	$4, %dl
	sete	%dl
	addb	%dl, %cl
	movb	%cl, %dl
	shlb	$2, %dl
	addb	%r8b, %dl
	shlb	$2, %dl
	movzbl	%dl, %edx
	movl	%esi, (%rdi,%rdx,4)
	leaq	2(%rdx), %r9
	movl	%esi, (%rdi,%r9,4)
	leaq	1(%rdx), %r9
	movl	%esi, (%rdi,%r9,4)
	addq	$3, %rdx
	movl	%esi, (%rdi,%rdx,4)
	incb	%r8b
	decb	%al
	movb	%r8b, %dl
	jne	LBB0_1

Now we produce:

LBB0_3:                                 ## %bb
	cmpb	$4, %dl
	sete	%dl
	addb	%dl, %cl
	movb	%cl, %dl
	shlb	$2, %dl
	addb	%r8b, %dl
	shlb	$2, %dl
	movzbl	%dl, %edx
	movl	%esi, (%rdi,%rdx,4)
	movl	%esi, 8(%rdi,%rdx,4)
	movl	%esi, 4(%rdi,%rdx,4)
	movl	%esi, 12(%rdi,%rdx,4)
	incb	%r8b
	decb	%al
	movb	%r8b, %dl
	jne	LBB0_1



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101958 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20 23:18:40 +00:00
Johnny Chen
56a1afb6b0 When doing Thumb disassembly, there's no need to consider t2ADDrSPi12/t2SUBrSPi12,
as their generic counterparts t2ADDri12/t2SUBri12 should suffice.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101929 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20 18:45:24 +00:00
Bill Wendling
b545cde675 Move CodeGen/X86/2010-04-19-DAGCombineCrash.ll into CodeGen/X86/crash.ll. Also
reduce.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101925 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20 18:14:47 +00:00
Johnny Chen
ef37e3abb7 For t2LDRT, t2LDRBT, t2LDRHT, t2LDRSBT, and t2LDRSHT, if Rn(Inst{19-16})=='1111',
transform the Opcode to the corresponding t2LDR*pci counterpart.

Ref: A8.6.86 LDRT, A8.6.65 LDRBT, A8.6.77 LDRHT, A8.6.81 LDRSBT, A8.6.85 LDRSHT


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101915 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20 17:28:50 +00:00
Devang Patel
eff666f108 Add RUN:
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101913 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20 17:20:10 +00:00
Chris Lattner
44e05080f8 Bill's change in r95336 broke empty aggregates embedded
in other types.  fix this by only bumping zero-byte globals
up to a single byte if the *entire global* is zero size,
fixing PR6340.

This also fixes empty arrays etc to be handled correctly,
and only does this on subsection-via-symbols targets (aka
darwin) which is the only place where this matters.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101879 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20 06:20:21 +00:00
Chris Lattner
aa2776e934 teach cellspu how to return i8 and i16 from calls,
patch by Kalle Raiskila!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101875 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20 05:36:09 +00:00
Chris Lattner
a78130c320 RewriteLoopBodyWithConditionConstant can end up rewriting the
condition we're unswitching on.  In this case, don't try to
simplify the second copy of the loop which may be dead or not,
but is probably a constant now.  This fixes PR6879


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101870 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20 05:09:16 +00:00
Chris Lattner
f1cfb95337 reapply 'reject forward references to functions whose type don't match'
now that the testsuite has been updated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101866 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20 04:49:11 +00:00
Bill Wendling
86c5abb4c0 The visitXOR method can return the same SDNode. If so, we don't want to delete
it as it's not dead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101855 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20 01:25:01 +00:00
Eric Christopher
6d972fd087 Remove the palignr intrinsics now that we lower them to vector shuffles,
shifts and null vectors. Autoupgrade these to what we'd lower them to.

Add a testcase to exercise this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101851 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20 00:59:54 +00:00
Chris Lattner
eae220259f Fix rdar://7879828 - crash in CallGraph, a self host issue.
Arg promotion was deleting call graph nodes that still had references
from the 'indirect' CGN.  Like the inliner, it should only delete the
function if all references are gone.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101845 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20 00:46:50 +00:00
Bob Wilson
02170c0034 Fix tests for Neon load/store intrinsics to match the i8* types expected by
the intrinsics.  The reason for those i8* types is that the intrinsics are
overloaded on the vector type and we don't have a way to declare an intrinsic
where one argument is an overloaded vector type and another argument is a
pointer to the vector element type.  The bitcasts added here will match what
the frontend will typically generate when these intrinsics are used.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101840 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20 00:17:16 +00:00
Dan Gohman
c056454ecf Remove the Expr member from IVUsers. Instead of remembering the expression,
just ask ScalarEvolution for it on demand. This helps IVUsers be more robust
in the case of expressions changing underneath it. This fixes PR6862.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101819 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-19 21:48:58 +00:00
Johnny Chen
22e401f5d4 According to A8.6.16 B (Encoding T3) and A8.3 Conditional execution -- A8.3.1
Pseudocode details of conditional, Condition bits '111x' indicate the
instruction is always executed.  That is, '1111' is a leagl condition field
value, which is now mapped to ARMCC::AL.

Also add a test case for condition field '1111'.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101817 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-19 21:19:52 +00:00
Devang Patel
e9afbfe664 Fix typo. add a test case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101812 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-19 20:31:39 +00:00
Johnny Chen
4b7df442a8 ARM disassembler did not react to recent changes to the NEON instruction table.
VLD1q*_UPD and VST1q*_UPD have the ${dst:dregpair} operand now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101784 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-19 16:20:34 +00:00
Nick Lewycky
a370a44a76 Fix declarations in a few more tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101676 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-17 21:29:25 +00:00
Daniel Dunbar
dd3a87912b Revert "reject forward references to functions whose type don't match", because DJG told me to!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101675 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-17 21:24:55 +00:00
Nick Lewycky
8e13af309b Fix intrinsic signature in this test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101674 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-17 21:12:55 +00:00
Chris Lattner
77e80deabc reject forward references to functions whose type don't match
up with the definition (and fix a broken testcase).  PR6491.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101670 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-17 20:45:56 +00:00
Chris Lattner
0dd0d49e78 doh, didn't mean to check in my hackaround lit sucking. :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101663 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-17 19:04:03 +00:00
Chris Lattner
34e9d17d1b fix PR6332, allowing an index of zero into a zero sized array
even if the element of the array has no size.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101662 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-17 19:02:33 +00:00
Chris Lattner
eef6d78be1 teach the x86 asm parser how to handle segment prefixes
in memory operands.  rdar://7874844


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101661 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-17 18:56:34 +00:00
Chris Lattner
0fb372a497 testcase for r101538, patch by Nico Schmidt!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101642 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-17 17:22:06 +00:00
Dan Gohman
9f23dee08c Start function numbering at 0.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101638 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-17 16:29:15 +00:00
Chris Lattner
65de1b9eb3 a bunch of ssse3 instructions are misencoded to think they have an
i8 field when they really do not.  This fixes rdar://7840289


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101629 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-17 07:38:24 +00:00
Evan Cheng
8d1092be64 Add nounwind.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101613 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-17 03:43:36 +00:00
Bob Wilson
84bd6b0c31 Re-commit my previous SSAUpdater changes. The previous version naively tried
to determine where to place PHIs by iteratively comparing reaching definitions
at each block.  That was just plain wrong.  This version now computes the
dominator tree within the subset of the CFG where PHIs may need to be placed,
and then places the PHIs in the iterated dominance frontier of each definition.
The rest of the patch is mostly the same, with a few more performance
improvements added in.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101612 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-17 03:08:24 +00:00
Johnny Chen
f7e2bc80d1 Minor change to make the test case comply with Vd<0> == '0' when Q == '1'.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101559 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-16 22:48:31 +00:00
Johnny Chen
c7b65914e0 Fixed a bug in DisassembleN1RegModImmFrm() where a break stmt was missing for a
case.  Also, the 0xFF hex literal involved in the shift for ESize64 should be
suffixed "ul" to preserve the shift result.

Implemented printHex*ImmOperand() by copying from ARMAsmPrinter.cpp and added a
test case for DisassembleN1RegModImmFrm()/printHex64ImmOperand().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101557 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-16 22:40:20 +00:00
Johnny Chen
16fda6982b In the same spirit of r101524, which removed the assert() from printAddrMode2OffsetOperand(),
this patch removes the assert() from printAddrMode3OffsetOperand() and adds a test case.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101529 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-16 19:57:21 +00:00
Johnny Chen
2fb10f17d8 Multiclass LdStCop was using pre-UAL syntax LDC<c>L for the L fragment. Changed
to the UAL syntax of LDCL<c>, instead.

Add a test case for this change which also tests the removal of assert() from
printAddrMode2OffsetOperand().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101527 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-16 19:33:23 +00:00
Dan Gohman
ec1fb6d09a Revert r101455, which fails on the llvm-arm-linux buildbot.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101515 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-16 18:37:31 +00:00
Dan Gohman
b391bb8947 Disable inlining of recursive calls. It can complicate tailcallelim and
dependent analyses, and increase code size, so doing it profitably would
require more complex heuristics.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101471 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-16 16:01:18 +00:00
Dan Gohman
ea25b48af3 Refine the detection of seemingly infinitely recursive calls where the
callee is expected to be expanded to something else by codegen, so that
normal infinitely recursive calls are still transformed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101468 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-16 15:57:50 +00:00
Bill Wendling
fef4c69728 Add JIT exception handling test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101455 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-16 09:04:28 +00:00
Chris Lattner
5f0378251c move comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101433 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-16 01:05:52 +00:00
Chris Lattner
d55c1c1659 fix PR6832: we were using the alignment of a pointer when we
wanted the alignment of the pointee.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101432 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-16 01:05:38 +00:00
Johnny Chen
cd52932dce Added another test case for am3offset operand, testing Rn, #+/-imm8.
Previous checkin tested Rn, #+/-Rm.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101418 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-15 23:23:40 +00:00
Jakob Stoklund Olesen
4b231c5705 Add test case for machine-sink on critical edges
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101416 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-15 23:19:16 +00:00
Johnny Chen
1cfa094562 Fixed a bug in ARM disassembly where LDRSBT should have am3offset operand, not
am2offset.  Modified the instruction table entry and added a new test case.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101415 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-15 23:12:47 +00:00
Evan Cheng
3a1588a2e3 Use default lowering of DYNAMIC_STACKALLOC. As far as I can tell, ARM isle is doing the right thing and codegen looks correct for both Thumb and Thumb2.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101410 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-15 22:20:34 +00:00
Jakob Stoklund Olesen
5ef9d76f6f Fix PR6847. RegScavenger should ignore DebugValues.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101392 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-15 20:28:39 +00:00
Evan Cheng
0ea7d219ec ARM SelectDYN_ALLOC should emit a copy from SP rather than referencing SP directly. In cases where there are two dyn_alloc in the same BB it would have caused the old SP value to be reused and badness ensues. rdar://7493908
llvm is generating poor code for dynamic alloca, I'll fix that later.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101383 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-15 18:42:28 +00:00
Chris Lattner
e6987587d6 enhance the load/store narrowing optimization to handle a
tokenfactor in between the load/store.  This allows us to 
optimize test7 into:

_test7:                                 ## @test7
## BB#0:                                ## %entry
	movl	(%rdx), %eax
                                        ## kill: SIL<def> ESI<kill>
	movb	%sil, 5(%rdi)
	ret

instead of:

_test7:                                 ## @test7
## BB#0:                                ## %entry
	movl	4(%esp), %ecx
	movl	$-65281, %eax           ## imm = 0xFFFFFFFFFFFF00FF
	andl	4(%ecx), %eax
	movzbl	8(%esp), %edx
	shll	$8, %edx
	addl	%eax, %edx
	movl	12(%esp), %eax
	movl	(%eax), %eax
	movl	%edx, 4(%ecx)
	ret



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101355 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-15 06:10:49 +00:00
Chris Lattner
6dc868581b teach codegen to turn trunc(zextload) into load when possible.
This doesn't occur much at all, it only seems to formed in the case
when the trunc optimization kicks in due to phase ordering.  In that
case it is saves a few bytes on x86-32.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101350 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-15 05:40:59 +00:00
Chris Lattner
efcddc3325 add a simple dag combine to replace trivial shl+lshr with
and.  This happens with the store->load narrowing stuff.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101348 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-15 05:28:43 +00:00
Chris Lattner
2392ae7d73 Implement rdar://7860110 (also in target/readme.txt) narrowing
a load/or/and/store sequence into a narrower store when it is
safe.  Daniel tells me that clang will start producing this sort
of thing with bitfields, and this does  trigger a few dozen times
on 176.gcc produced by llvm-gcc even now.

This compiles code like CodeGen/X86/2009-05-28-DAGCombineCrash.ll 
into:

        movl    %eax, 36(%rdi)

instead of:

        movl    $4294967295, %eax       ## imm = 0xFFFFFFFF
        andq    32(%rdi), %rax
        shlq    $32, %rcx
        addq    %rax, %rcx
        movq    %rcx, 32(%rdi)

and each of the testcases into a single store.  Each of them used
to compile into craziness like this:

_test4:
	movl	$65535, %eax            ## imm = 0xFFFF
	andl	(%rdi), %eax
	shll	$16, %esi
	addl	%eax, %esi
	movl	%esi, (%rdi)
	ret




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101343 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-15 04:48:01 +00:00
Chris Lattner
dc7d6c9ddc further tweak this to do something useful.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101341 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-15 04:31:42 +00:00
Chris Lattner
23ab896c13 remove undef control flow.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101340 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-15 04:30:19 +00:00
Daniel Dunbar
4c7276a4eb tests: MC/Disassembler tests depend on ARM support being compiler in.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101337 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-15 03:47:20 +00:00
Jakob Stoklund Olesen
d394e272d2 Remove unneeded types from test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101286 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-14 20:56:09 +00:00
Bob Wilson
164cd8b8d3 Don't custom lower bit converts to ARM VMOVDRRD or VMOVDRR when the operand
does not have a legal type.  The legalizer does not know how to handle those
nodes.  Radar 7854640.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101282 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-14 20:45:23 +00:00
Evan Cheng
dda54eef23 Trim tests and convert to FileCheck.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101277 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-14 20:22:17 +00:00
Nick Lewycky
3715e45da5 Revert r101213.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101231 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-14 04:51:58 +00:00
Chris Lattner
d305035155 implement mc asmparser support for '.', which gets the
current PC.  rdar://7834775

We now produce an identical .o file compared to the cctools
assembler for something like this:

_f0:
L0:
        jmp L1
        .long . - L0
L1:
        jmp A
        .long . - L1

        .zerofill __DATA,_bss,A,0



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101227 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-14 04:40:28 +00:00
Nick Lewycky
05f1498efa Commit testcase for r101213.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101214 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-14 03:46:42 +00:00
Devang Patel
7cc11ce5a6 XFAIL this test for powerpc.
This test relies on iSel lowering dbg_declare intrinsic when CodeGen::OptLevel is None. On PPC side, CodeGen::OptLevel stays to default when -O0 is used on the command line.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101190 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-13 23:23:09 +00:00
Evan Cheng
370aac4a28 Add test for post-ra machine licm.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101182 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-13 22:10:03 +00:00
Bob Wilson
6a234f07fa Handle a v2f64 formal parameter that is split between registers and memory
such that the entire second half is in memory.  Radar 7855014.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101181 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-13 22:03:22 +00:00
Devang Patel
50d80e394d Do not include types without any definition in pubtypes list.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101171 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-13 20:35:04 +00:00
Evan Cheng
005de5ef33 Fix test on non-x86 hosts.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101163 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-13 18:54:04 +00:00
Evan Cheng
fc5a03e469 Re-apply 101075 and fix it properly. Just reuse the debug info of the branch instruction being optimized. There is no need to --I which can deref off start of the BB.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101162 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-13 18:50:27 +00:00
Eric Christopher
97e6992e3e Temporarily revert r101075, it's causing invalid iterator assertions
in a nightly tester.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101158 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-13 18:37:58 +00:00
Dan Gohman
28287794d4 Teach ScalarEvolution to simplify smax and umax when it can prove
that one operand is always greater than another.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101142 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-13 16:51:03 +00:00
Dan Gohman
a590b79ee2 Teach IndVarSimplify how to eliminate remainder operators where the
numerator is an induction variable. For example, with code like this:

  for (i=0;i<n;++i)
    x[i%n] = 0;

IndVarSimplify will now recognize that i is always less than n inside
the loop, and eliminate the remainder.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101113 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-13 01:46:36 +00:00
Chris Lattner
43ac721e3b add llvm codegen support for -ffunction-sections and -fdata-sections,
patch by Sylvere Teissier!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101106 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-13 00:36:43 +00:00
Evan Cheng
82865a10f8 Use .set expression for x86 pic jump table reference to reduce assembly relocation. rdar://7738756
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101085 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-12 23:07:17 +00:00
Bill Wendling
8cc21cac89 Third time's a charm...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101081 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-12 22:43:21 +00:00
Bill Wendling
476e62c459 Genericize the label test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101079 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-12 22:40:37 +00:00
Bill Wendling
35fe23157f Correct test to test what I mean it to test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101077 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-12 22:25:42 +00:00
Bill Wendling
2aae6ae572 Micro-optimization:
If we have this situation:

    jCC  L1
    jmp  L2
L1:
  ...
L2:
  ...

We can get a small performance boost by emitting this instead:

    jnCC L2
L1:
  ...
L2:
  ...

This testcase shows an example of this:

float func(float x, float y) {
    double product = (double)x * y;
    if (product == 0.0)
        return product;
    return product - 1.0;
}



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101075 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-12 22:19:57 +00:00
Dan Gohman
ca9b7037e2 Suppress LinearFunctionTestReplace when the computed backedge-taken
expression is a UDiv and it doesn't appear that the UDiv came from
the user's source.

ScalarEvolution has recently figured out how to compute a tripcount
expression for the inner loop in
SingleSource/Benchmarks/Shootout/sieve.c, using a udiv. Emitting a
udiv instruction dramatically slows down the enclosing loop.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101068 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-12 21:13:43 +00:00
Johnny Chen
bb6e9d8cf7 Fixed a crasher in arm disassembler within ARMInstPrinter.cpp after calling
ARM_AM::getSoImmVal(V) with a legitimate so_imm value: #245 rotate right by 2.
Introduce ARM_AM::getSOImmValOneOrNoRotate(unsigned Arg) which is called from
ARMInstPrinter.cpp's printSOImm() function, replacing ARM_AM::getSOImmVal(V).

[12:44:43] johnny:/Volumes/data/llvm/git/trunk (local-trunk) $ gdb Debug/bin/llvm-mc
GNU gdb 6.3.50-20050815 (Apple version gdb-1346) (Fri Sep 18 20:40:51 UTC 2009)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "x86_64-apple-darwin"...Reading symbols for shared libraries ... done

(gdb) set args  -triple=arm-apple-darwin9 -debug-only=arm-disassembler --disassemble
(gdb) r
Starting program: /Volumes/data/llvm/git/trunk/Debug/bin/llvm-mc -triple=arm-apple-darwin9 -debug-only=arm-disassembler --disassemble
Reading symbols for shared libraries ++. done
0xf5 0x71 0xf0 0x53
Opcode=201 Name=MVNi Format=ARM_FORMAT_DPFRM(4)
 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10  9  8  7  6  5  4  3  2  1  0 
-------------------------------------------------------------------------------------------------
| 0: 1: 0: 1| 0: 0: 1: 1| 1: 1: 1: 1| 0: 0: 0: 0| 0: 1: 1: 1| 0: 0: 0: 1| 1: 1: 1: 1| 0: 1: 0: 1|
-------------------------------------------------------------------------------------------------

	mvnpls	r7, Assertion failed: (V != -1 && "Not a valid so_imm value!"), function printSOImm, file ARMInstPrinter.cpp, line 229.

Program received signal SIGABRT, Aborted.
0x00007fff88c65886 in __kill ()
(gdb) bt
#0  0x00007fff88c65886 in __kill ()
#1  0x00007fff88d05eae in abort ()
#2  0x00007fff88cf2ef0 in __assert_rtn ()
#3  0x000000010020e422 in printSOImm (O=@0x1010bdf80, V=-1, VerboseAsm=false, MAI=0x1020106d0) at ARMInstPrinter.cpp:229
#4  0x000000010020e5fe in llvm::ARMInstPrinter::printSOImmOperand (this=0x1020107e0, MI=0x7fff5fbfee70, OpNum=1, O=@0x1010bdf80) at ARMInstPrinter.cpp:254
#5  0x00000001001ffbc0 in llvm::ARMInstPrinter::printInstruction (this=0x1020107e0, MI=0x7fff5fbfee70, O=@0x1010bdf80) at ARMGenAsmWriter.inc:3236
#6  0x000000010020c27c in llvm::ARMInstPrinter::printInst (this=0x1020107e0, MI=0x7fff5fbfee70, O=@0x1010bdf80) at ARMInstPrinter.cpp:182
#7  0x000000010003cbff in PrintInsts (DisAsm=@0x10200f4e0, Printer=@0x1020107e0, Bytes=@0x7fff5fbff060, SM=@0x7fff5fbff078) at Disassembler.cpp:65
#8  0x000000010003c8b4 in llvm::Disassembler::disassemble (T=@0x1010c13c0, Triple=@0x1010b6798, Buffer=@0x102010690) at Disassembler.cpp:153
#9  0x000000010004095c in DisassembleInput (ProgName=0x7fff5fbff3f0 "/Volumes/data/llvm/git/trunk/Debug/bin/llvm-mc") at llvm-mc.cpp:347
#10 0x000000010003eefb in main (argc=4, argv=0x7fff5fbff298) at llvm-mc.cpp:374
(gdb) q
The program is running.  Exit anyway? (y or n) y
[13:36:26] johnny:/Volumes/data/llvm/git/trunk (local-trunk) $ 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101053 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-12 18:46:53 +00:00
Dan Gohman
27dead44e0 Generalize ScalarEvolution's PHI analysis to handle loops that don't
have preheaders or dedicated exit blocks, as clients may not otherwise
need to run LoopSimplify.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101030 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-12 07:49:36 +00:00
Evan Cheng
09010a30fd Enable post regalloc machine licm by default.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101023 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-12 06:25:28 +00:00
Eric Christopher
67a71b5306 Verify function prototypes before trying to optimize functions. We also
need TargetData, just return false if we don't have it.

Update testcases accordingly.

Fixes PR6807.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101011 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-12 04:48:00 +00:00
Dan Gohman
931e345e76 Re-apply r101000, with a fix: Don't eliminate an icmp which is part of
the loop exit test. This usually doesn't come up for a variety of
reasons, but it isn't impossible, so make IndVarSimplify handle it
conservatively.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101008 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-12 02:21:50 +00:00
Dan Gohman
ac3b9cdf15 Revert 101000, which is breaking self-host builds.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101002 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-12 00:17:10 +00:00
Dan Gohman
3fddbb337d Teach IndVarSimplify how to eliminate comparisons involving induction
variables. For example, with code like this:

  for (i=0;i<n;++i)
    if (i<n)
      x[i] = 0;

IndVarSimplify will now recognize that i is always less than n inside
the loop, and eliminate the if.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101000 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-11 23:10:12 +00:00
Chris Lattner
6f285d2105 fix PR6743, a case where we'd delete an instruction before using it
in some cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100937 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-10 18:26:57 +00:00
Chris Lattner
a2fb234b04 fix PR6760, a missing check in heap SRoA.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100936 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-10 18:19:22 +00:00
Dan Gohman
e5f76877ae When determining a canonical insert position, don't climb deeper
into adjacent loops. Also, ensure that the insert position is
dominated by the loop latch of any loop in the post-inc set which
has a latch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100906 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-09 22:07:05 +00:00
Dan Gohman
f8d0578e4c When emitting code for an add, don't force a SCEVUnknown wrapper around
a hoisted intermediate result if the intermediate result isn't an
Instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100884 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-09 19:14:31 +00:00
Benjamin Kramer
232c8b4d26 Make sure this test tests something.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100879 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-09 19:03:31 +00:00
Bob Wilson
f5c3f8cda5 Add a testcase for svn r100568.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100876 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-09 18:29:29 +00:00
Chris Lattner
dc8446330f "On SPU, variables in the .bss section that are allocated with the .lcomm directive are not aligned on 16 byte boundaries. This causes misaligned loads, as the generated assembly assumes this "default" alignment.
this patch disables .lcomm in favour of '.local .comm'

Patch by Kalle Raisklia!




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100875 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-09 18:27:03 +00:00
Dan Gohman
5ce1bf9531 Merge a few fast-isel tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100860 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-09 15:03:55 +00:00
Dan Gohman
be02b20a8f Add several more lint checks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100841 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-09 01:39:53 +00:00
Dan Gohman
b3cdb0ec31 Fix a bug in IVUsers which was permitting non-affine addrecs to
be sent to LSR, which it isn't prepared to handle.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100839 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-09 01:22:56 +00:00
Chris Lattner
8829cec25f fix a SCCP miscompilation that could happen when a
forced constant is changed to a constant, we would end
up adding the instruction to the wrong worklist, 
preventing it from being properly revisited.  This fixes
rdar://7832370


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100837 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-09 01:14:31 +00:00
Dan Gohman
dd98c4d185 Add a few more lint checks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100825 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-08 23:05:57 +00:00
Evan Cheng
a57fabe815 Coalescer should not delete copy instructions whose defs are partially dead. e.g.
%RDI<def,dead> = MOV64rr %RAX<kill>, %EDI<imp-def>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100804 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-08 20:02:37 +00:00
Dan Gohman
113902e9fb Add a -lint pass which checks for common sources of undefined or likely
unintended behavior.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100798 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-08 18:47:09 +00:00
Dan Gohman
b57b6f1575 Pointers to zero-sized objects don't point to overlapping objects.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100789 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-08 18:11:50 +00:00
Dan Gohman
29e13e0c18 Print empty structs as {} rather than { }.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100787 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-08 18:03:05 +00:00
Evan Cheng
c3b0c341e7 Avoid using f64 to lower memcpy from constant string. It's cheaper to use i32 store of immediates.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100751 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-08 07:37:57 +00:00
Dan Gohman
701a4aef7f When expanding expressions which are using post-inc mode for multiple loops,
ensure that the expansion is dominated by the increments of those loops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100748 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-08 05:57:57 +00:00
Chris Lattner
d2075586c8 add newlines at the end of files.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100705 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07 22:53:17 +00:00
Dan Gohman
448db1cdef Generalize IVUsers to track arbitrary expressions rather than expressions
explicitly split into stride-and-offset pairs. Also, add the
ability to track multiple post-increment loops on the same expression.

This refines the concept of "normalizing" SCEV expressions used for
to post-increment uses, and introduces a dedicated utility routine for
normalizing and denormalizing expressions.

This fixes the expansion of expressions which are post-increment users
of more than one loop at a time. More broadly, this takes LSR another
step closer to being able to reason about more than one loop at a time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100699 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07 22:27:08 +00:00
Benjamin Kramer
447b19543b unXFAIL, arm disassembler was reenabled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100692 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07 21:19:41 +00:00
Dale Johannesen
b39b7e5ebf Split big test into multiple directories to cater to
those who don't build all targets.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100688 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07 20:43:35 +00:00
Dale Johannesen
809948a998 Test that DEBUG_VALUE comments come out on a variety of targets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100682 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07 20:01:24 +00:00
Chris Lattner
b1ceecefac this has a pr!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100637 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07 18:04:56 +00:00
Chris Lattner
24ad3ed71f fix a latent bug my inline asm stuff exposed:
MachineOperand::isIdenticalTo wasn't handling metadata operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100636 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07 18:03:19 +00:00
Sanjiv Gupta
06fd8fadc8 Remove XFAIL for vg_leak as the leaks are fixed by 100601.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100612 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07 07:06:48 +00:00
Devang Patel
5f0940002a Do not emit specification DIE with DW_AT_specification attribute for member functions of a funcation local class. This trips gdb's partial scan of DIEs at load time. Fixes Radar 7833483.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100586 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-06 23:53:48 +00:00
Jakob Stoklund Olesen
e7b744fe64 Let that which does not matter truly slide.
This test only cares about alignment, so don't test for other cruft.
An upcoming llvm-gcc patch needs this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100584 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-06 23:44:44 +00:00
Stuart Hastings
639336e0bd Reverting 100530 & 100531 due to regressions in the GDB test suite.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100563 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-06 21:38:29 +00:00
Jakob Stoklund Olesen
8ba1c6ab87 Don't try to collapse DomainValues onto an incompatible SSE domain.
This fixes the Bullet regression on i386/nocona.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100553 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-06 19:48:56 +00:00
Stuart Hastings
983327b351 Revise debug info machinery to digest nested functions and classes.
A certain GDB testsuite case (local.cc) has a function nested inside a
class nested inside another function.  GCC presents the innermost
function to llvm-convert first.  Heretofore, the debug info mistakenly
placed the inner function at module scope.  This patch walks the GCC
context links and instantiates the outer class and function so the
debug info is properly nested.  Radar 7426545.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100530 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-06 17:19:32 +00:00
Evan Cheng
da72249ecb Add nounwind.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100482 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-05 22:30:05 +00:00
Dan Gohman
c4ae94dee8 Don't do code sinking on unreachable blocks. It's unprofitable and hazardous.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100455 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-05 19:17:22 +00:00
Evan Cheng
1b0194d646 Reverting 100265 to try to get buildbots green again. Lots of self-hosting buildbots started complaining since this commit. Also xfail ARM disassembly tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100378 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-05 01:04:27 +00:00
Chris Lattner
af8df26495 resolve a fixme.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100346 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-04 19:28:59 +00:00
Mon P Wang
20adc9dc46 Reapply address space patch after fixing an issue in MemCopyOptimizer.
Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100304 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-04 03:10:48 +00:00
Chris Lattner
96fd76638b add integer overflow check for the fp induction variable
checker.  Amusingly, we already had tests that we should
have rejects because they would be miscompiled in the
testsuite.

The remaining issue with this is that we don't check that
the branch causes us to exit the loop if it fails, so we
don't actually know if we remain in bounds.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100284 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-03 07:18:48 +00:00
Chris Lattner
43b85273ee fix PR6761, a miscompilation due to the fp->int IV conversion
stuff.  More bugs remain though.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100282 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-03 06:30:03 +00:00
Chris Lattner
203bceb111 convert to filecheck
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100281 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-03 06:27:56 +00:00
Chris Lattner
cf9abd210d rename feature test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100279 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-03 06:24:28 +00:00
Chris Lattner
6aea48b81c actually just remove this, will move the real feature test here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100278 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-03 06:24:03 +00:00
Chris Lattner
415d754f53 rename test since it is a feature test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100277 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-03 06:22:52 +00:00
Chris Lattner
07aa76ad93 first half of a pass through IndVarSimplify::HandleFloatingPointIV,
this cleans up a bunch of code and also fixes several crashes and
miscompiles.  More to come unfortunately, this optimization
is quite broken.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100270 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-03 05:54:59 +00:00
Bob Wilson
49c283fd3f Revert all my SSAUpdater patches. The PHI placement algorithm is not correct
(what was I thinking?) and there's also a problem with LCSSA.  I'll try again
later with fixes.

--- Reverse-merging r100263 into '.':
U    lib/Transforms/Utils/SSAUpdater.cpp
--- Reverse-merging r100177 into '.':
G    lib/Transforms/Utils/SSAUpdater.cpp
--- Reverse-merging r100148 into '.':
G    lib/Transforms/Utils/SSAUpdater.cpp
--- Reverse-merging r100147 into '.':
U    include/llvm/Transforms/Utils/SSAUpdater.h
G    lib/Transforms/Utils/SSAUpdater.cpp
--- Reverse-merging r100131 into '.':
G    include/llvm/Transforms/Utils/SSAUpdater.h
G    lib/Transforms/Utils/SSAUpdater.cpp
--- Reverse-merging r100130 into '.':
G    lib/Transforms/Utils/SSAUpdater.cpp
--- Reverse-merging r100126 into '.':
G    include/llvm/Transforms/Utils/SSAUpdater.h
G    lib/Transforms/Utils/SSAUpdater.cpp
--- Reverse-merging r100050 into '.':
D    test/Transforms/GVN/2010-03-31-RedundantPHIs.ll
--- Reverse-merging r100047 into '.':
G    include/llvm/Transforms/Utils/SSAUpdater.h
G    lib/Transforms/Utils/SSAUpdater.cpp


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100264 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-03 03:50:38 +00:00
Johnny Chen
b68a3ee82a Second try of initial ARM/Thumb disassembler check-in. It consists of a tablgen
backend (ARMDecoderEmitter) which emits the decoder functions for ARM and Thumb,
and the disassembler core which invokes the decoder function and builds up the
MCInst based on the decoded Opcode.

Reviewed by Chris Latter and Bob Wilson.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100233 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-02 22:27:38 +00:00
Evan Cheng
f28f8bc40e Correctly lower memset / memcpy of undef. It should be a nop. PR6767.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100208 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-02 19:36:14 +00:00
Mon P Wang
e754d3fb85 Revert r100191 since it breaks objc in clang
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100199 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-02 18:43:02 +00:00
Mon P Wang
e33c848fa4 Reapply address space patch after fixing an issue in MemCopyOptimizer.
Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100191 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-02 18:04:15 +00:00
Dan Gohman
d7bfd0028b Manually notify ScalarEvolution before making an operand replacement, since
it can't currently observe such changes automatically.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100186 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-02 14:48:31 +00:00
Dan Gohman
f860db2398 Revert the recent alignment changes. They're broken for -Os because,
in particular, they end up aligning strings at 16-byte boundaries, and
there's no way for GlobalOpt to check OptForSize.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100172 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-02 03:04:37 +00:00
Evan Cheng
db8771af28 After trivial coalescing, the MI being visited may have become a copy. Avoid adding it to CSE hash table since copies aren't being considered for CSE and they may be deleted.
rdar://7819990


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100170 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-02 02:21:24 +00:00
Dan Gohman
1e4ac4dfd9 Remove this initializer so that the optimizer doesn't convert
unaligned loads into aligned loads.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100166 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-02 01:26:13 +00:00
Dan Gohman
403d5a2c49 Update this test for the new preferred alignment heuristics.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100165 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-02 01:24:08 +00:00