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2011-12-27Clean up some Release build warnings.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147289 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-27Add handling of x86_avx2_pmovmskb to computeMaskedBitsForTargetNode for ↵Craig Topper
consistency. Add comments and an assert for BMI instructions to PerformXorCombine since the enabling of the combine is conditional on it, but the function itself isn't. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147287 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-27Teach simplifycfg to recompute branch weights when merging some branches, andNick Lewycky
to discard weights when appropriate. Still more to do (and a new TODO), but it's a start! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147286 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-27Using Inst->setMetadata(..., NULL) should be safe to remove metadata even whenNick Lewycky
there is non of that type to remove. This fixes a crasher in the particular case where the instruction has metadata but no metadata storage in the context (this is only possible if the instruction has !dbg but no other metadata info). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147285 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-26Fix warning.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147284 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-26Make sure DAGCombiner doesn't introduce multiple loads from the same memory ↵Eli Friedman
location. PR10747, part 2. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147283 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-26Update the branch weight metadata when reversing the order of a branch.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147280 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-26Sort includes, canonicalize whitespace, fix typos. No functionality change.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147279 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-25Update the LangRef documentation: the codegen does support this instruction.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147274 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-25Fix a typo in the widening of vectors in PromoteIntRes. Patch by Shemer Anat.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147272 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-25Sparc: Implement emitFrameIndexDebugValue and getDebugValue Location hooks.Venkatraman Govindaraju
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147269 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-25Add braces to remove silly warning.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147264 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-25Remove unused variables.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147261 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24Add an explicit test that we now fold cttz.i32(..., true) >> 5 -> 0.Chandler Carruth
This is a result of Benjamin's work on ValueTracking. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147259 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24InstCombine: Add a combine that turns (2^n)-1 ^ x back into (2^n)-1 - x iff ↵Benjamin Kramer
x is smaller than 2^n and it fuses with a following add. This was intended to undo the sub canonicalization in cases where it's not profitable, but it also finds some cases on it's own. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147256 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24ComputeMaskedBits: Make knownzero computation more aggressive for ctlz with ↵Benjamin Kramer
undef zero. unsigned foo(unsigned x) { return 31 - __builtin_clz(x); } now compiles into a single "bsrl" instruction on x86. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147255 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24InstCombine: Canonicalize (2^n)-1 - x into (2^n)-1 ^ x iff x is known to be ↵Benjamin Kramer
smaller than 2^n. This has the obvious advantage of being commutable and is always a win on x86 because const - x wastes a register there. On less weird architectures this may lead to a regression because other arithmetic doesn't fuse with it anymore. I'll address that problem in a followup. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147254 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24Section relative fixups are a coff concept, not a x86 one. Replace theRafael Espindola
x86 specific reloc_coff_secrel32 with a generic FK_SecRel_4. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147252 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24Use standard promotion for i8 CTTZ nodes and i8 CTLZ nodes when theChandler Carruth
LZCNT instructions are available. Force promotion to i32 to get a smaller encoding since the fix-ups necessary are just as complex for either promoted type We can't do standard promotion for CTLZ when lowering through BSR because it results in poor code surrounding the 'xor' at the end of this instruction. Essentially, if we promote the entire CTLZ node to i32, we end up doing the xor on a 32-bit CTLZ implementation, and then subtracting appropriately to get back to an i8 value. Instead, our custom logic just uses the knowledge of the incoming size to compute a perfect xor. I'd love to know of a way to fix this, but so far I'm drawing a blank. I suspect the legalizer could be more clever and/or it could collude with the DAG combiner, but how... ;] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147251 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24Add systematic testing for cttz as well, and fix the bug I spotted byChandler Carruth
inspection earlier. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147250 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24Add i8 and i64 testing for ctlz on x86. Also simplify the i16 test.Chandler Carruth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147249 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24Tidy up this rather crufty test. Put the declarations at the top to makeChandler Carruth
my C-brain happy. Remove the unnecessary bits of pedantic IR fluff like nounwind. Remove stray uses comments. Name things semantically rather than tN so that adding a new test in the middle doesn't cause pain, and so that new tests can be grouped semantically. This exposes how little systematic testing is going on here. I noticed this by finding several bugs via inspection and wondering why this test wasn't catching any of them. =[ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147248 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24Chandler fixed this.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147247 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24Expand more when we have a nice 'tzcnt' instruction, to avoid generatingChandler Carruth
'bsf' instructions here. This one is actually debatable to my eyes. It's not clear that any chip implementing 'tzcnt' would have a slow 'bsf' for any reason, and unless EFLAGS or a zero input matters, 'tzcnt' is just a longer encoding. Still, this restores the old behavior with 'tzcnt' enabled for now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147246 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24Tidy up some of these tests.Chandler Carruth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147245 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24Switch the lowering of CTLZ_ZERO_UNDEF from a .td pattern back to theChandler Carruth
X86ISelLowering C++ code. Because this is lowered via an xor wrapped around a bsr, we want the dagcombine which runs after isel lowering to have a chance to clean things up. In particular, it is very common to see code which looks like: (sizeof(x)*8 - 1) ^ __builtin_clz(x) Which is trying to compute the most significant bit of 'x'. That's actually the value computed directly by the 'bsr' instruction, but if we match it too late, we'll get completely redundant xor instructions. The more naive code for the above (subtracting rather than using an xor) still isn't handled correctly due to the dagcombine getting confused. Also, while here fix an issue spotted by inspection: we should have been expanding the zero-undef variants to the normal variants when there is an 'lzcnt' instruction. Do so, and test for this. We don't want to generate unnecessary 'bsr' instructions. These two changes fix some regressions in encoding and decoding benchmarks. However, there is still a *lot* to be improve on in this type of code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147244 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24Cleanup this test a bit, sorting things and grouping them more clearly.Chandler Carruth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147243 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24Fix Comments.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147238 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24Add MachineMemOperands to instructions generated in storeRegToStackSlot orAkira Hatanaka
loadRegFromStackSlot. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147235 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24Detect unaligned loads/stores that have been added for Mips64 support.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147234 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24Test case for r147232.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147233 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24If target ABI is N64, LEA should be daddiu.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147232 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24Move x86 specific bits of the COFF writer to lib/Target/X86.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147231 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24Define trivial destructor inline.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147230 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-24Make GetRelocType pure virtual.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147229 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-23Fix typo "infinte".Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147226 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-23Move this test from date-name to feature-name, and port it to FileCheck.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147223 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-23When not destroying the source, the linker is not remapping the types. Added ↵Mon P Wang
support to CloneFunctionInto to allow remapping for this case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147217 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-23Use 'check_symbol_exists' instead of 'check_function_exists' for finding ↵Ted Kremenek
isatty. This change allows Xcode generated projects to have HAVE_ISATTY to be properly defined. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147215 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-23Experimental support for aligned NEON spills.Jakob Stoklund Olesen
ARM targets with NEON units have access to aligned vector loads and stores that are potentially faster than unaligned operations. Add support for spilling the callee-saved NEON registers to an aligned stack area using 16-byte aligned NEON loads and store. This feature is off by default, controlled by an -align-neon-spills command line option. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147211 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-22Add variants of the dispatchsetup pseudo for Thumb and !VFP. <rdar://10620138>Bob Wilson
My change r146949 added register clobbers to the eh_sjlj_dispatchsetup pseudo instruction, but on Thumb1 some of those registers cannot be used. This caused massive failures on the testsuite when compiling for Thumb1. While fixing that, I noticed that the eh_sjlj_setjmp instruction has a "nofp" variant, and I realized that dispatchsetup needs the same thing, so I have added that as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147204 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-22TableGen: add a commentDylan Noblesmith
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147199 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-22try to fix MSVC buildDylan Noblesmith
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147198 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-22drop unneeded config.h includesDylan Noblesmith
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147197 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-22Attempt #2 to fix mingw crossbuild. This time with more ugly hacks!Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147196 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-22Fix 80-column violations.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147192 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-22Make the -fvisibility-inlines-hidden check more thorough in a hopeless ↵Benjamin Kramer
attempt to fix mingw cross-compiles. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147191 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-22Move all the dependencies on X86FixupKinds.h to a single method in preparationRafael Espindola
to moving it to lib/Target/X86. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147190 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-22ARM VFP assembly parsing and encoding for VCVT(float <--> fixed point).Jim Grosbach
rdar://10558523 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147189 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-22Add missing usesCustomInserter flag on Int_eh_sjlj_setjmp_nofp.Bob Wilson
Noticed by inspection; I don't have a testcase for this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147188 91177308-0d34-0410-b5e6-96231b3b80d8
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