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Author SHA1 Message Date
Jeffrey Yasskin
d1ba06bf13 Make X86-64 in the Large model always emit 64-bit calls. 
The large code model is documented at
http://www.x86-64.org/documentation/abi.pdf and says that calls should
assume their target doesn't live within the 32-bit pc-relative offset
that fits in the call instruction.

To do this, we turn off the global-address->target-global-address
conversion in X86TargetLowering::LowerCall(). The first attempt at
this broke the lazy JIT because it can separate the movabs(imm->reg)
from the actual call instruction. The lazy JIT receives the address of
the movabs as a relocation and needs to record the return address from
the call; and then when that call happens, it needs to patch the
movabs with the newly-compiled target. We could thread the call
instruction into the relocation and record the movabs<->call mapping
explicitly, but that seems to require at least as much new
complication in the code generator as this change.

To fix this, we make lazy functions _always_ go through a call
stub. You'd think we'd only have to force lazy calls through a stub on
difficult platforms, but that turns out to break indirect calls
through a function pointer. The right fix for that is to distinguish
between calls and address-of operations on uncompiled functions, but
that's complex enough to leave for someone else to do.

Another attempt at this defined a new CALL64i pseudo-instruction,
which expanded to a 2-instruction sequence in the assembly output and
was special-cased in the X86CodeEmitter's emitInstruction()
function. That broke indirect calls in the same way as above.

This patch also removes a hack forcing Darwin to the small code model.
Without far-call-stubs, the small code model requires things of the
JITMemoryManager that the DefaultJITMemoryManager can't provide.

Thanks to echristo for lots of testing!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88984 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 22:41:33 +00:00
Evan Cheng
600c043697 - Check memoperand alignment instead of checking stack alignment. Most load / store folding instructions are not referencing spill stack slots. 
- Mark MOVUPSrm re-materializable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88974 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 21:56:03 +00:00
Devang Patel
f76a3d634f Revert r88939. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88973 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 21:53:40 +00:00
David Greene
f941d29077 Fix an expensive-checks error. 
The Mask and LHSMask may not be of the same size, so don't do the
transformation if they're different.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88972 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 21:52:23 +00:00
Jim Grosbach
7bde297133 Make the pass class name more explicit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88964 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 21:13:22 +00:00
Jim Grosbach
074fb0252d make pass name a bit more clear 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88961 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 21:03:58 +00:00
Dan Gohman
6ac0e76ff4 Sink a #include <map> to where it's actually needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88956 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 20:40:47 +00:00
Dan Gohman
552c0dff34 Fix a typo in a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88953 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 20:35:59 +00:00
Bob Wilson
4a504c6ff8 Fix a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88940 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 19:33:27 +00:00
Devang Patel
270a97430d Add VISIBILITY_HIDDEN marker. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88939 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 19:20:48 +00:00
Jim Grosbach
08cbda56b6 Simplify thumb2 jump table adjustments. Remove unnecessary calculation and 
usage of block sizes and offsets.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88935 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 18:58:52 +00:00
Jim Grosbach
9249efe4c7 clarify comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88933 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 18:55:47 +00:00
Bob Wilson
c4a0c843e4 Fix some comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88932 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 18:54:08 +00:00
Bob Wilson
d34f5d91bc Whitespace: be consistent with pointer syntax. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88929 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 18:08:46 +00:00
Bob Wilson
3cbc312087 Clean up whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88927 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 17:56:13 +00:00
Jim Grosbach
b2e86bb142 back off for a bit. tracking down weirdness 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88919 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 17:17:48 +00:00
Jim Grosbach
ca215e7804 Analyze has to be before checking the condition, obviously. Properly construct an iterator for prior. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88917 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 17:10:56 +00:00
David Greene
ddff941357 Support spill comments. 
Have the asm printer emit a comment if an instruction is a spill or
reload and have the spiller mark copies it introdues so the asm printer
can also annotate those.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88911 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 15:12:23 +00:00
Duncan Sands
46785e68b8 BuildIntCast takes an additional parameter, isSigned. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88910 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 13:15:28 +00:00
Duncan Sands
f63c41033a CreateIntCast takes an "isSigned" parameter. Pass "true" for it, rather than 
a name.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88908 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 12:32:28 +00:00
Evan Cheng
746d546877 Special case FixedStackPseudoSourceValueVal as well. Do we really need to differentiate PseudoSourceValueVal from FixedStackPseudoSourceValueVal at this level? 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88902 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 07:10:36 +00:00
Evan Cheng
39aa7251a2 Check if subreg index is zero. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88899 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 06:31:49 +00:00
Evan Cheng
285a7d57dc For some targets, a copy can use a register multiple times, e.g. ppc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88895 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 05:52:06 +00:00
Bruno Cardoso Lopes
add2076c06 Disable ldc1/sdc1 instructions for mips1 targets. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88887 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 04:35:29 +00:00
Bruno Cardoso Lopes
6e0b658dad - Fix a small bug while handling target constant pools (one param was missing). 
- Add a smarter constant pool loading, instead of:

lui $2, %hi($CPI1_0)
addiu $2, $2, %lo($CPI1_0)
lwc1 $f0, 0($2)

Generate:

lui $2, %hi($CPI1_0)
lwc1 $f0, %lo($CPI1_0)($2)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88886 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 04:33:42 +00:00
Chris Lattner
d6add155a7 typo spotted by duncan. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88884 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 03:51:42 +00:00
Lang Hames
79ac32de3b Fixes the bug exposed by Anton's test case in PR 5495: 
Make sure when ProcessImplicitDefs removes a copy which kills its source reg that it
removes the copy from said reg's Kills list.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88881 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 02:07:31 +00:00
Lang Hames
b126d0530d Fix for the original bug in PR5495 - Look at uses as well as defs when determining the PHI-copy insert point. 
- Patch by Andrew Canis!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88880 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 02:00:09 +00:00
Jim Grosbach
a44321776e Detect need for autoalignment of the stack earlier to catch spills more 
conservatively. eliminateFrameIndex() machinery adjust to handle addr mode
6 (vld1/vst1) used for spills. Fix tests to expect aligned Q-reg spilling

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88874 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-15 21:45:34 +00:00
Jim Grosbach
6cb6788b79 set the def of the VLD1q64 properly 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88873 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-15 21:05:07 +00:00
Chris Lattner
800c47ec10 teach LVI to infer edge information from switch instructions. 
This allows JT to eliminate a ton of infeasible edges when
handling code like the templates in PatternMatch.h


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88869 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-15 20:02:12 +00:00
Chris Lattner
5553a3a510 fix a logic error that would cause LVI-JT to miscompile 
some conditionals


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88868 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-15 20:01:24 +00:00
Chris Lattner
e5642812d3 implement the first stab at caching queries. This isn't correct 
(because the invalidation logic is missing) but LVI isn't enabled
by default anyway.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88867 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-15 20:00:52 +00:00
Chris Lattner
2c5adf832a refactor a bunch of code forming the new LazyValueInfoCache 
and LVIQuery classes, no functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88866 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-15 19:59:49 +00:00
Chris Lattner
4e447ebc58 make PRE of loads preserve the alignment of the moved load instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88865 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-15 19:58:31 +00:00
Chris Lattner
1fb5630474 fix a bug handling 'not x' when x is undef. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88864 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-15 19:57:43 +00:00
Nick Lewycky
93f9f7a440 Add a complex missed optimization opportunity I came across while investigating 
bug 5438.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88855 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-15 17:51:23 +00:00
Edward O'Callaghan
e0fb75d586 Add PSP OS Target to Triple, Credit to Bruno Cardoso Lopes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88849 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-15 10:18:17 +00:00
Nick Lewycky
feb8018764 Revert r88830 and r88831 which appear to have caused a selfhost buildbot some 
grief. I suspect this patch merely exposed a bug else.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88841 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-15 07:47:32 +00:00
Nick Lewycky
df772f257f Teach instcombine to look for booleans in wider integers when it encounters a 
zext(icmp). It may be able to optimize that away. This fixes one of the cases
in PR5438.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88830 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-15 05:55:17 +00:00
Lang Hames
e98b4b0695 Added an assert to the PBQP allocator to catch infinite cost solutions which might otherwise lead to miscompilations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88829 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-15 04:39:51 +00:00
Daniel Dunbar
bfa0929583 Remove bogus corei7 and atom entries, the family was incorrect. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88818 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 22:04:42 +00:00
Daniel Dunbar
a7ac3cee8f Fill out X86 table, although we are missing lots of names for things. We now 
properly detect my Xeon box though.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88814 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 21:36:19 +00:00
Daniel Dunbar
ba43e0785b Report the detected host CPU in --version. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88813 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 21:36:07 +00:00
Jim Grosbach
9c477f54f3 cleanup. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88812 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 21:33:37 +00:00
Jim Grosbach
c04cae9c9b Do not merge jump tables this early. Branch folding will do any necessary 
merges, and until then, it's useful to keep the tables separate for ease
of manipulation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88806 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 20:15:03 +00:00
Jim Grosbach
00a6a1f022 Cleanup flow, and only update the jump table we're analyzing when replacing a destination MBB. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88805 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 20:10:18 +00:00
Jim Grosbach
68bb60f6a4 Add function to replace a destination MBB in a single jump table 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88804 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 20:09:13 +00:00
Richard Osborne
13c4fabf99 Add XCore support for arbitrary-sized aggregate returns. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88802 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 19:33:35 +00:00
Anton Korobeynikov
b23f3aa270 Temporary disable the error - it seems to be too conservative. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88800 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 18:01:41 +00:00
Benjamin Kramer
f2a39bd24f Implement DISABLE_INLINE for MSVC. This required changing the position in all 
forward declaration and patching tblgen to emit it right. Patch by Amine Khaldi!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88798 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 16:37:18 +00:00
Daniel Dunbar
067d024b05 Add llvm::sys::getHostCPUName, for detecting the LLVM name for the host CPU. 
- This is an initial step towards -march=native support in Clang, and towards
   eliminating host dependencies in the targets. See PR5389.

 - Patch by Roman Divacky!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88768 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 10:09:12 +00:00
Nick Lewycky
e79fddedca Remove LLVMContext from reassociate. It was threaded through every function but 
ultimately never used.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88763 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 07:25:54 +00:00
Sanjiv Gupta
9a501cf19d revert 88761 as it fails builds. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88762 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 07:22:25 +00:00
Sanjiv Gupta
6fb01a7750 Fix debug info crashes for PIC16. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88761 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 06:19:49 +00:00
Nick Lewycky
20162ac566 Teach BasicAA that a constant expression can't alias memory provably not 
allocated until runtime (such as an alloca). Patch by Hans Wennborg!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88760 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 06:15:14 +00:00
Evan Cheng
fae3e92345 Added getSubRegIndex(A,B) that returns subreg index of A to B. Use it to replace broken code in VirtRegRewriter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88753 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 03:42:17 +00:00
Evan Cheng
d57cdd5683 - Change TargetInstrInfo::reMaterialize to pass in TargetRegisterInfo. 
- If destination is a physical register and it has a subreg index, use the
  sub-register instead.
This fixes PR5423.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88745 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 02:55:43 +00:00
Dan Gohman
4ec01b268e Add an option for running GVN with redundant load processing disabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88742 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 02:27:51 +00:00
Evan Cheng
8fdd84cfa7 Fix PR5412: Fix an inverted check and another missing sub-register check. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88738 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 02:09:09 +00:00
Dan Gohman
ed9bab3b4d Enable the tail call optimization when the caller returns undef. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88737 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 02:06:30 +00:00
Evan Cheng
0cd22dd738 When expanding t2STRDi8 r, r to two stores, add kill markers correctly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88734 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 01:50:00 +00:00
Jakob Stoklund Olesen
3b6ced1510 Fix bug in -split-phi-edges. 
When splitting an edge after a machine basic block with fall-through, we
forgot to insert a jump instruction. Fix this by calling updateTerminator() on
the fall-through block when relevant.

Also be more precise in PHIElimination::isLiveIn.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88728 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 00:38:13 +00:00
Jakob Stoklund Olesen
9aebb61daf Update MachineDominator information 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88727 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 00:38:06 +00:00
Lang Hames
b3661585c0 Added an API to the SlotIndexes pass to allow new instructions to be inserted into the numbering. 
PreAllocSplitting is now using this API to insert code.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88725 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 00:02:51 +00:00
Evan Cheng
1f6a3c820a Fix PR5411. Bug in UpdateKills. A reg def partially define its super-registers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88719 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 23:16:41 +00:00
Eric Christopher
2b1ffeea28 Remove extraneous commit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88716 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 23:08:47 +00:00
Eric Christopher
04458e404f Print out something, even if it's non-parseable later when we've 
got ghost linkage. It's better than aborting.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88715 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 23:00:14 +00:00
Jakob Stoklund Olesen
1222287543 Fix PHIElimination optimization that uses MBB->getBasicBlock. 
The BasicBlock associated with a MachineBasicBlock does not necessarily
correspond to the code in the MBB.

Don't insert a new IR BasicBlock when splitting critical edges. We are not
supposed to modify the IR during codegen, and we should be able to do just
fine with a NULL BB.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88707 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 21:56:15 +00:00
Jakob Stoklund Olesen
ce727d0da0 Add MachineFunction::verify() to call the machine code verifier directly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88706 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 21:56:09 +00:00
Jakob Stoklund Olesen
52cd548525 The instruction pointer %RIP is a reserved register on x86_64. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88705 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 21:56:01 +00:00
Jakob Stoklund Olesen
1dc0fcbaed Fix polarity of a CFG check in machine verifier. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88704 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 21:55:54 +00:00
Dan Gohman
24f8e29b4e Use .data() instead of .c_str() when nul-termination is not needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88703 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 21:55:31 +00:00
David Greene
1924aabf99 Move DebugInfo checks into EmitComments and remove them from 
target-specific AsmPrinters.  Not all comments need DebugInfo.

Re-enable the line numbers comment test.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88697 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 21:34:57 +00:00
Dan Gohman
c4c550c758 When optimizing for size, don't tail-merge unless it's likely to be a 
code-size win, and not when it's only likely to be code-size neutral,
such as when only a single instruction would be eliminated and a new
branch would be required.

This fixes rdar://7392894.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88692 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 21:02:15 +00:00
Evan Cheng
236490d870 Fix PR5410: LiveVariables lost subreg def: 
D0<def,dead> = ...
...
             = S0<use, kill>
S0<def>      = ...
...
D0<def>      = 

The first D0 def is correctly marked dead, however, livevariables should have
added an implicit def of S0 or we end up with a use without a def.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88690 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 20:36:40 +00:00
David Goodwin
87d21b92fc Allow target to specify regclass for which antideps will only be broken along the critical path. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88682 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 19:52:48 +00:00
Bruno Cardoso Lopes
a8173b934f Support fp64 immediate zero, this fixes only part of PR5445 
because the testcase is triggering one more bug.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88674 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 18:49:59 +00:00
Dan Gohman
01205a80f5 Don't let a noalias difference disrupt the tailcall optimization. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88672 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 18:49:38 +00:00
Rafael Espindola
20fd4ec8c5 Distinguish "a," from "a". The first one splits into "a" + "" and the second one into 
"a" + 0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87084 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 04:55:09 +00:00
Devang Patel
3ddf70442f Revert r87059 for now. It is failing clang tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87070 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 02:27:33 +00:00
Devang Patel
3fb6bd690a Ignore nameless variables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87069 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 02:25:26 +00:00
Rafael Espindola
c78c0c99a0 Switch to smallvector. Also fix issue with using unsigend for MaxSplit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87068 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 02:18:25 +00:00
Dale Johannesen
1e608819aa Adjust isConstantSplat to allow for big-endian targets. 
PPC is such a target; make it work.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87060 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 01:45:18 +00:00
Victor Hernandez
0418c102dd Remove unnecessary llvm.dbg.declare bitcast 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87059 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 01:44:55 +00:00
Rafael Espindola
5ccac24726 Add a new split method to StringRef that puts the substrings in a vector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87058 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 01:24:40 +00:00
Jim Grosbach
c1a07be185 Block renumbering 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87056 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 01:19:24 +00:00
Jim Grosbach
f4cbc0e421 use lower case for readability 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87054 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 01:17:22 +00:00
David Greene
dda3978d78 Fix a bootstrap failure. 
Provide special isLoadFromStackSlotPostFE and isStoreToStackSlotPostFE
interfaces to explicitly request checking for post-frame ptr elimination
operands.  This uses a heuristic so it isn't reliable for correctness.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87047 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-13 00:29:53 +00:00
Owen Anderson
98538b4bea Re-enable this code, since redundant PHIs are now being better nuked. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87042 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 23:22:41 +00:00
Bill Wendling
ecc260e403 Simplify code a bit 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87040 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 23:13:08 +00:00
Bill Wendling
ed060dcb5c Refactor code that checks if it's a call to a "nounwind" function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87036 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 21:59:20 +00:00
Chris Lattner
4ff4141a9e use isInstructionTriviallyDead, as pointed out by Duncan 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87035 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 21:58:18 +00:00
David Greene
b3bc115a24 Do some cleanups suggested by Chris. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87034 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 21:49:55 +00:00
David Greene
6bedb30220 Set the ReloadReuse AsmPrinter flag where appropriate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87030 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 21:07:54 +00:00
David Greene
b9c2fd964e Make the MachineFunction argument of getFrameRegister const. 
This also fixes a build error.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87027 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 21:00:03 +00:00
David Greene
b87bc95db0 Add hasLoadFromStackSlot and hasStoreToStackSlot to return whether a 
machine instruction loads or stores from/to a stack slot.  Unlike
isLoadFromStackSlot and isStoreFromStackSlot, the instruction may be
something other than a pure load/store (e.g. it may be an arithmetic
operation with a memory operand).  This helps AsmPrinter determine when
to print a spill/reload comment.

This is only a hint since we may not be able to figure this out in all
cases.  As such, it should not be relied upon for correctness.

Implement for X86.  Return false by default for other architectures.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87026 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 20:55:29 +00:00
Daniel Dunbar
bf4af353ed Fix -Asserts warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87024 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 20:53:43 +00:00
Bill Wendling
ac18929801 If there's more than one function operand to a call instruction, be conservative 
and don't assume that the call doesn't throw. It would be nice if there were a
way to determine which is the callee and which is a parameter. In practice, the
architecture we care about normally only have one operand for a call instruction
(x86 and arm).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87023 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 20:51:53 +00:00
David Greene
3f2bf85d14 Add a bool flag to StackObjects telling whether they reference spill 
slots.  The AsmPrinter will use this information to determine whether to
print a spill/reload comment.

Remove default argument values.  It's too easy to pass a wrong argument
value when multiple arguments have default values.  Make everything
explicit to trap bugs early.

Update all targets to adhere to the new interfaces..


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87022 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 20:49:22 +00:00