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5468e0928b
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9807 Commits

Author SHA1 Message Date
Jim Grosbach
5468e0928b add cmd line option to leave dbgvalues in during post-RA sceduling. Useful 
while debugging what's mishandled about them in the post-RA pass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103805 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-14 21:18:04 +00:00
Bill Wendling
b92187a410 Rename "HasCalls" in MachineFrameInfo to "AdjustsStack" to better describe what 
the variable actually tracks.

N.B., several back-ends are using "HasCalls" as being synonymous for something
that adjusts the stack. This isn't 100% correct and should be looked into.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103802 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-14 21:14:32 +00:00
Devang Patel
98e1cac52c Add support to preserve type info for the variables that are removed by the optimizer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103798 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-14 21:01:35 +00:00
Jakob Stoklund Olesen
1b2c761a9c When verifying two-address instructions, check the following: 
- Kill is implicit when use and def registers are identical.
- Only virtual registers can differ.

Add a -verify-fast-regalloc to run the verifier before the fast allocator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103797 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-14 20:28:32 +00:00
Jakob Stoklund Olesen
4ed1082683 Simplify the handling of physreg defs and uses in RegAllocFast. 
This adds extra security against using clobbered physregs, and it adds kill
markers to physreg uses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103784 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-14 18:03:25 +00:00
Daniel Dunbar
bd616b69f7 XFAIL the test I added with vg_leak, apparently it is the first and only llc 
-filetype=obj test, and -filetype=obj leaks a few objects. Added a FIXME, we
need to sort out the ownership model for the various MC objects.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103769 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-14 07:47:51 +00:00
Daniel Dunbar
d11d59e35a Inline Asm: Ensure buffer is newline terminated to match how the text is printed. 
- This is a hack, but I can't decide the best place to handle this. Chris?

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103765 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-14 04:31:50 +00:00
Jakob Stoklund Olesen
7ff82e1501 Enable opportunistic coalescing 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103764 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-14 04:30:51 +00:00
Jakob Stoklund Olesen
57b6076d34 Trust kill flags from isel and later passes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103748 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-14 00:02:23 +00:00
Jakob Stoklund Olesen
7d4f25904d Fix an embarrassing runtime regression for RegAllocFast. 
This loop is quadratic in the capacity for a DenseMap:

  while(!map.empty())
    map.erase(map.begin());

Instead we now do a normal begin() - end() iteration followed by map.clear().
That also has the nice sideeffect of shrinking the map capacity on demand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103747 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-14 00:02:20 +00:00
Dale Johannesen
a5afa1cb21 Implement a correct ui64->f32 conversion. The old 
one was subject to double rounding in extreme cases.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103744 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 23:50:42 +00:00
Jakob Stoklund Olesen
c9c4dacd03 Clean up RegAllocFast debug output 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103739 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 20:43:17 +00:00
Dan Gohman
e6cd757e68 Teach MachineLICM and MachineSink how to clear kill flags conservatively 
when they move instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103737 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 20:34:42 +00:00
Dan Gohman
49b4589978 Add a utility function for conservatively clearing kill flags, and make 
use of it in MachineCSE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103726 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 19:24:00 +00:00
Dan Gohman
e1308d86ed An Instruction has a trivial kill only if its use is in the same 
basic block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103725 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 19:19:32 +00:00
Jakob Stoklund Olesen
4bf4bafcce Take allocation hints from copy instructions to/from physregs. 
This causes way more identity copies to be generated, ripe for coalescing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103686 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 00:19:43 +00:00
Jakob Stoklund Olesen
63e34f690c More asserts around physreg uses 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103685 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 00:19:39 +00:00
Evan Cheng
054dbb8e82 If REG_SEQUENCE source is livein, copy it first. Also, update livevariables information when a copy is introduced. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103680 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 00:00:35 +00:00
Evan Cheng
de7dea2e44 Do not attempt copy coalescing if the source and dest sub-register indices do not match. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103679 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-12 23:59:42 +00:00
Jakob Stoklund Olesen
804291e316 Make sure to add kill flags to the last use of a virtreg when it is redefined. 
The X86 floating point stack pass and others depend on good kill flags.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103635 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-12 18:46:03 +00:00
Duncan Sands
5b1b3b73f2 Remove unused variable. Tweak a comment while there. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103586 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-12 07:11:33 +00:00
Nathan Jeffords
871bb94c43 updated support for the COFF .linkonce 
Now, the .linkonce directive is emitted as part of MCSectionCOFF::PrintSwitchToSection instead of AsmPrinter::EmitLinkage since it is an attribute of the section the symbol was placed into not the symbol itself.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103568 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-12 04:26:09 +00:00
Evan Cheng
736f89b1c1 Teach local regalloc about virtual registers with sub-indices. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103539 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-12 01:29:36 +00:00
Evan Cheng
3ae56bcd8a Code clean up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103538 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-12 01:27:49 +00:00
Jakob Stoklund Olesen
1a1ad578a3 Avoid scoping issues, fix buildbots 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103530 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-12 00:11:19 +00:00
Dan Gohman
a6cb641f48 Add initial kill flag support to FastISel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103529 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 23:54:07 +00:00
Daniel Dunbar
0efd768aea Make Clang happy. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103528 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 23:53:13 +00:00
Jakob Stoklund Olesen
210e2afcc7 Store the Dirty bit in the LiveReg structure instead of a bit vector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103522 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 23:24:47 +00:00
Jakob Stoklund Olesen
76b4d5a021 Keep track of the last place a live virtreg was used. 
This allows us to add accurate kill markers, something the scavenger likes.
Add some more tests from ARM that needed this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103521 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 23:24:45 +00:00
Dan Gohman
9d7019f586 Don't set kill flags on uses of CopyFromReg nodes. InstrEmitter doesn't 
create separate virtual registers for CopyFromReg values, so uses of
them don't necessarily kill the value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103519 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 21:59:14 +00:00
Jakob Stoklund Olesen
8e8b3cb937 Silence warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103508 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 20:51:04 +00:00
Jakob Stoklund Olesen
82b07dc499 Simplify the tracking of used physregs to a bulk bitor followed by a transitive 
closure after allocating all blocks.

Add a few more test cases for -regalloc=fast.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103500 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 20:30:28 +00:00
Duncan Sands
16d8f8bd91 I got tired of VISIBILITY_HIDDEN colliding with the gcc enum. Rename it 
to LLVM_LIBRARY_VISIBILITY and introduce LLVM_GLOBAL_VISIBILITY, which is
the opposite, for future use by dragonegg.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103495 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 20:16:09 +00:00
Dan Gohman
038df88e28 Trim #includes and forward declarations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103489 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 19:11:43 +00:00
Jakob Stoklund Olesen
bbf33b38aa Mostly rewrite RegAllocFast. 
Sorry for the big change. The path leading up to this patch had some TableGen
changes that I didn't want to commit before I knew they were useful. They
weren't, and this version does not need them.

The fast register allocator now does no liveness calculations. Instead it relies
on kill flags provided by isel. (Currently those kill flags are also ignored due
to isel bugs). The allocation algorithm is supposed to work with any subset of
valid kill flags. More kill flags simply means fewer spills inserted.

Registers are allocated from a working set that contains no aliases. That means
most allocations can be done directly without expensive alias checks. When the
working set runs out of registers we do the full alias check to find new free
registers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103488 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 18:54:45 +00:00
Dan Gohman
ff7a562751 Implement a bunch more TargetSelectionDAGInfo infrastructure. 
Move EmitTargetCodeForMemcpy, EmitTargetCodeForMemset, and
EmitTargetCodeForMemmove out of TargetLowering and into
SelectionDAGInfo to exercise this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103481 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 17:31:57 +00:00
Douglas Gregor
7d9663c70b Fixes for Microsoft Visual Studio 2010, from Steven Watanabe! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103457 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 06:17:44 +00:00
Evan Cheng
31b9c44cc1 It's not safe eliminate copies where src and dst have different sub-register indices. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103450 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 00:20:03 +00:00
Evan Cheng
0bcccac504 Ensure REG_SEQUENCE source operands are unique. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103449 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 00:04:31 +00:00
Evan Cheng
60ffa9467b Indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103441 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-10 23:08:19 +00:00
Devang Patel
163a9f7c5f Enable multiple Compile Units in one module. 
This means now 'llvm-ld a.bc b.bc' will preserve debug info appropriately.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103439 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-10 22:49:55 +00:00
Evan Cheng
9cc9bfaf86 It's not safe to propagate implicit_def that defines part of a register. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103436 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-10 21:25:30 +00:00
Evan Cheng
fc6e6a9b3b Clear RegSequences vector after eliminating REG_SEQUENCE instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103435 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-10 21:24:55 +00:00
Evan Cheng
aad753bbbd Be careful with operand promotion. For a binary operation, the source operands may be the same. PR7018. rdar://7939869. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103419 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-10 19:03:57 +00:00
Evan Cheng
623d3c10e1 Re-defined valno is always valno even for partial re-def's. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103410 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-10 17:33:49 +00:00
Bob Wilson
fde18e5eff Fix PR7096. When a block containing multiple defs is tail duplicated, the 
SSAUpdater for the value from the first def may see uses of undefined values,
because the later defs will not have been updated yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103407 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-10 17:14:26 +00:00
Duncan Sands
ad017dcb3a Add an assertion to catch attempts to access off the end of the array. 
Based on a patch by Javier Martinez.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103391 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-10 04:54:28 +00:00
Devang Patel
c665a5146d Instead of just verifying compile unit, verify entire type, variable, namespace etc.. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103327 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-07 23:33:41 +00:00
Devang Patel
a49d877290 Remove DIGlobal. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103325 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-07 23:19:07 +00:00
Dan Gohman
4ce86f459c SDDbgValues are apparently not being legalized. Fix a symptom of the problem, 
and not the real problem itself, by dropping debug info for i128 values.
rdar://7958162.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103310 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-07 22:19:08 +00:00