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Author SHA1 Message Date
Owen Anderson
6147af0f8c When merging live intervals, we also need to merge in any live ranges that are inputs to two-address instructions 
that themselves define a range we already care about.

llvm-svn: 54185
 2008-07-30 00:21:16 +00:00
Eli Friedman
81169f2e1b Fix for PR2607: SCEV miscomputing the loop count for loops with an 
SGT exit condition.  Essentially, the correct way to flip an inequality 
in 2's complement is the not operator, not the negation operator.  
That said, the difference only affects cases involving INT_MIN.

Also, enhance the pre-test search logic to be a bit smarter about 
inequalities flipped with a not operator, so it can eliminate the smax 
from the iteration count for simple loops.

llvm-svn: 54184
 2008-07-30 00:04:08 +00:00
Owen Anderson
ab575176fc When merging a PHI operand's live interval into the PHI's live interval, we need to merge over all liveranges in 
the operand's interval that share the relevant value number, not just the range that immediately precedes the PHI.

llvm-svn: 54174
 2008-07-29 21:17:08 +00:00
Owen Anderson
bebb8e5d20 Don't decrement the BB remap when we don't need to. 
llvm-svn: 54173
 2008-07-29 21:15:44 +00:00
Duncan Sands
c3d73fbfc0 Fix PR2609. If a label is deleted, then it needs 
to be marked invalid regardless of whether it is
a debug, an exception handling or (hopefully) a
GC label.

llvm-svn: 54172
 2008-07-29 20:56:02 +00:00
Bruno Cardoso Lopes
2188281cd4 Changed some methods order. 
llvm-svn: 54169
 2008-07-29 19:29:50 +00:00
Nate Begeman
f76a814673 Fix broken CellSPU lowering, re-instate braces in Legalize 
llvm-svn: 54168
 2008-07-29 19:07:27 +00:00
Bruno Cardoso Lopes
9d91fab260 Added floating point lowering for select. 
llvm-svn: 54167
 2008-07-29 19:05:28 +00:00
Duncan Sands
282f4a39f4 Set the executable bit - means it can actually 
be run when installing on sparc sun.  Set the
mime type to text/x-sh while there.

llvm-svn: 54165
 2008-07-29 18:31:42 +00:00
Nate Begeman
20b060cd54 Disable a fix in the previous patch, since it breaks CellSPU. 
The CellSPU codegen is broken, but needs to be fixed before we can
put this back in.

llvm-svn: 54164
 2008-07-29 18:28:31 +00:00
Nate Begeman
9a71580e21 Add vector shifts to the IR, patch by Eli Friedman. 
CodeGen & Clang work coming next.

llvm-svn: 54161
 2008-07-29 15:49:41 +00:00
Matthijs Kooijman
7199907f50 Add -unroll-allow-partial command line option that enabled the loop unroller to 
partially unroll a loop when fully unrolling would not fit under the threshold.

Patch by Mikael Lepistö.

llvm-svn: 54160
 2008-07-29 13:21:23 +00:00
Matthijs Kooijman
77948dbbc2 Restructure ArgumentPromotion a bit. Instead of just having a single boolean 
that says "unconditional loads from this argument are safe", we now keep track
of the safety per set of indices from which loads happen. This prevents
ArgPromotion from promoting loads that aren't really valid. As an added effect,
this will now disregard the the type of the indices passed to a GEP, so
"load GEP %A, i32 1" and "load GEP %A, i64 1" will result in a single argument,
not two.

This fixes PR2598, for which a testcase has been added as well.

llvm-svn: 54159
 2008-07-29 10:00:13 +00:00
Matthijs Kooijman
1424ba7e0a Improve bugpoint output a bit by outputting the actual instructions instead of 
just it's name, which is often empty. Also remove a newline from the output
that wasn't really needed.

llvm-svn: 54158
 2008-07-29 08:55:30 +00:00
Matthijs Kooijman
6ef5a25c7f Add a GetElementPtrInst::getIndexedType that accepts uint64_t's instead of just Value*'s. 
llvm-svn: 54157
 2008-07-29 08:46:11 +00:00
Evan Cheng
10d4254f45 Fix for PR2578. Do not split off a block whose size is less than FreeRangeHeader::getMinBlockSize(). Patch by Damien. 
llvm-svn: 54152
 2008-07-29 07:38:32 +00:00
Dan Gohman
ebe629a4b2 Revert 54147. 
llvm-svn: 54148
 2008-07-29 01:02:18 +00:00
Dan Gohman
1816900fd1 Add x86 isel patterns to match what would be a ZERO_EXTEND_INREG operation, 
which is represented in codegen as an 'and' operation. This matches them
with movz instructions, instead of leaving them to be matched by and
instructions with an immediate field.

llvm-svn: 54147
 2008-07-28 22:18:25 +00:00
Dan Gohman
9653b21dc2 Fold the useful features of alist and alist_node into ilist, and 
a new ilist_node class, and remove them. Unlike alist_node,
ilist_node doesn't attempt to manage storage itself, so it avoids
the associated problems, including being opaque in gdb.

Adjust the Recycler class so that it doesn't depend on alist_node.
Also, change it to use explicit Size and Align parameters, allowing
it to work when the largest-sized node doesn't have the greatest
alignment requirement.

Change MachineInstr's MachineMemOperand list from a pool-backed
alist to a std::list for now.

llvm-svn: 54146
 2008-07-28 21:51:04 +00:00
Owen Anderson
d2cc2655af Don't remove volatile loads. Thanks to Duncan for noticing this one. 
llvm-svn: 54144
 2008-07-28 20:52:42 +00:00
Bill Wendling
db7e5da90e Remove extra lines 
llvm-svn: 54143
 2008-07-28 20:50:25 +00:00
Bruno Cardoso Lopes
4223351620 Disable gp_rel relocation for constant pools access for now. 
llvm-svn: 54142
 2008-07-28 19:26:25 +00:00
Duncan Sands
3df25c8758 Since build_vector is a variadic node, the number 
of operands should be -1 not 0.

llvm-svn: 54141
 2008-07-28 19:17:21 +00:00
Bruno Cardoso Lopes
67af9a72f4 Added floating point lowering for setcc and brcond. 
Fixed COMM asm directive usage.
ConstantPool using custom FourByteConstantSection.

llvm-svn: 54139
 2008-07-28 19:11:24 +00:00
Duncan Sands
ac8ddfc48d Test this differently: I saw this test fail 
because opt exited while llvm-as was still
writing to the pipe, causing it to get a
SIGPIPE.  It seems best to change things to
avoid the race altogether.

llvm-svn: 54138
 2008-07-28 19:09:01 +00:00
Bill Wendling
3a37809823 Don't build with 4.0. 
llvm-svn: 54137
 2008-07-28 18:45:36 +00:00
Dan Gohman
f6391108c6 Fix a typo in a comment. 
llvm-svn: 54136
 2008-07-28 18:43:51 +00:00
Dan Gohman
f8f44b4837 Reword a comment to be less ambiguous. 
llvm-svn: 54135
 2008-07-28 18:42:57 +00:00
Dan Gohman
415d5069f4 Fix a bashism in TestRunner.sh. 
llvm-svn: 54134
 2008-07-28 18:41:03 +00:00
Owen Anderson
4d84a90fa9 Add support for eliminating stores that store the same value that was just loaded. 
This fixes PR2599.

llvm-svn: 54133
 2008-07-28 16:14:26 +00:00
Owen Anderson
23a7866a06 Fix a subtle bug when removing instructions from memdep. In very specific 
circumstances we could end up remapping a dependee to the same instruction 
that we're trying to remove.  Handle this properly by just falling back to
a conservative solution.

llvm-svn: 54132
 2008-07-28 16:00:58 +00:00
Bill Wendling
86c1243f5e Remove <iostream> include. 
llvm-svn: 54131
 2008-07-27 23:18:30 +00:00
Dan Gohman
7ae5bf35a2 Don't use reinterpret_cast when it isn't needed. 
llvm-svn: 54130
 2008-07-27 23:12:19 +00:00
Dan Gohman
6bfdeb2ed1 Make the ScheduleDAG's GraphRoot edge be blue and dashed too, like 
the SelectionDAG's.

llvm-svn: 54129
 2008-07-27 22:46:49 +00:00
Dan Gohman
9742f7772d Rename SDOperand to SDValue. 
llvm-svn: 54128
 2008-07-27 21:46:04 +00:00
Dan Gohman
47c5cdbc34 Tidy SDNode::use_iterator, and complete the transition to have it 
parallel its analogue, Value::value_use_iterator. The operator* method
now returns the user, rather than the use.

llvm-svn: 54127
 2008-07-27 20:43:25 +00:00
Dan Gohman
a5a50a8853 Fix embedded CRLF characters. 
llvm-svn: 54125
 2008-07-27 18:37:58 +00:00
Dan Gohman
2a0bc8f6e1 Rename isOnlyUseOf to isOnlyUserOf. 
llvm-svn: 54124
 2008-07-27 18:06:42 +00:00
Dan Gohman
bdbaf4d128 Improve comments for SDNode use-count methods. No functionality change. 
llvm-svn: 54123
 2008-07-27 17:44:52 +00:00
Duncan Sands
545c21768f Some binary operations were being treated as 
unary operations!  Add support for softening
some additional unary operations like fp_to_sint.

llvm-svn: 54122
 2008-07-27 12:28:43 +00:00
Owen Anderson
25a3bf3f0e Fix the issues originally addressed in r54070. After thinking about it some more, I realized that the right thing to do 
is to have StrongPHIElimination use its knowledge of the PHIs before they're erased to update the intervals appropriate.  This is
both simpler and more accurate than the alternative, which was having LIA figure it out when it renumbered things, plus it's just
the right thing to do!

llvm-svn: 54077
 2008-07-25 23:38:08 +00:00
Owen Anderson
8f9ab550a2 Revert my previous patch. In retrospect, this is completely the wrong way to fix this problem. 
llvm-svn: 54072
 2008-07-25 23:06:59 +00:00
Owen Anderson
9408721750 Special cases are needed in renumbering when dealing with renumbering after a PHI has been removed. The interval previously defined 
by the PHI needs to be extended to the beginning of its basic block, and the intervals that were inputs need to be trimmed to the end 
of their basic blocks.

llvm-svn: 54070
 2008-07-25 22:32:01 +00:00
Owen Anderson
9e3ea5a60c In order to avoid reprocessing a register more than once, we need to add it 
to the handled set so it will get filtered out in future iterations.

llvm-svn: 54065
 2008-07-25 21:35:43 +00:00
Owen Anderson
987bd1dc5b Remove live interval entries for an interval if we're eliminating its only VN. 
llvm-svn: 54062
 2008-07-25 21:08:41 +00:00
Owen Anderson
fe97082ddd Properly remap live ranges whose end indices are the end of the function. 
llvm-svn: 54061
 2008-07-25 21:07:13 +00:00
Dan Gohman
c28f2265a4 Rename the version of CreateRet that's a convenience method for creating 
multiple-valued return values, so that the name CreateRet is just for
creating plain ret statements.

llvm-svn: 54053
 2008-07-25 20:36:15 +00:00
Owen Anderson
cefa4df4c1 Make the remapping of interval indices (particularly ending indices) more robust. 
This is tricky business, and will probably take a few more iterations to get
the last kinks out of it.

llvm-svn: 54043
 2008-07-25 19:50:48 +00:00
Duncan Sands
46a694af35 Fix error: ‘std::ostream’ has not been declared 
when compiling with gcc 4.3.

llvm-svn: 54041
 2008-07-25 19:29:14 +00:00
Nate Begeman
1396e3d206 Fix test RUN line 
llvm-svn: 54040
 2008-07-25 19:08:59 +00:00