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* Revert 124230. It was causing test failures.Bill Wendling2011-01-251-4/+2
| | | | llvm-svn: 124233
* The floating point value is encoded in its binary form as an Imm. Convert itBill Wendling2011-01-251-2/+4
| | | | | | appropriately so that it prints out the decimal representation. llvm-svn: 124230
* Add support for parsing a Real value. It stores the Real value as its binaryBill Wendling2011-01-251-1/+7
| | | | | | | encoding. It's up to the individual back-ends to convert it to their preferred representation when printing. llvm-svn: 124229
* Move unnamed_addr after the function arguments on Sabre's request.Rafael Espindola2011-01-252-6/+6
| | | | llvm-svn: 124209
* Resolve DanglingDbgValue of PHI nodes where the use follows dbg.value ↵Devang Patel2011-01-251-1/+3
| | | | | | intrinisic. llvm-svn: 124203
* This assertion is too restrictive, it does not apply for dangling dbg value ↵Devang Patel2011-01-251-8/+0
| | | | | | nodes (nodes where dbg.value intrinsic preceds use of the value). llvm-svn: 124202
* In which I discover that zero+zero is zero, d'oh!Duncan Sands2011-01-251-3/+3
| | | | llvm-svn: 124188
* See if this fixes llvm-gcc bootstrap.Duncan Sands2011-01-251-1/+2
| | | | llvm-svn: 124184
* According to my auto-simplifier the most common missed simplifications inDuncan Sands2011-01-252-13/+228
| | | | | | | | | | | optimized code are: (non-negative number)+(power-of-two) != 0 -> true and (x | 1) != 0 -> true Instcombine knows about the second one of course, but only does it if X|1 has only one use. These fire thousands of times in the testsuite. llvm-svn: 124183
* Teach mergefunc how to emit aliases safely again -- but keep it turned it offNick Lewycky2011-01-251-25/+79
| | | | | | | for now. It's controlled by the HasGlobalAliases variable which is not attached to any flag yet. llvm-svn: 124182
* Reorganize this so that the early exit and special cases come earlyEric Christopher2011-01-251-26/+26
| | | | | | rather than interspersed. No functional change. llvm-svn: 124168
* Don't merge restore with tail call instruction.Evan Cheng2011-01-251-1/+6
| | | | llvm-svn: 124167
* Provide correct registers for EH stuff on ARMAnton Korobeynikov2011-01-241-3/+4
| | | | llvm-svn: 124151
* Support printing exception section into the current one. This is the case ↵Anton Korobeynikov2011-01-241-1/+2
| | | | | | when LSDASection is blank llvm-svn: 124150
* Speculatively revert r124138.Devang Patel2011-01-241-3/+1
| | | | llvm-svn: 124142
* Resolve DanglingDbgValue of PHI nodes where the use follows dbg.value ↵Devang Patel2011-01-241-1/+3
| | | | | | intrinisic. llvm-svn: 124138
* Temporarily workaround JM/lencod miscompile (SIGSEGV).Andrew Trick2011-01-241-0/+2
| | | | | | rdar://problem/8893967 llvm-svn: 124137
* Give GetUnderlyingObject a TargetData, to keep it in syncDan Gohman2011-01-248-16/+19
| | | | | | | | | | | with BasicAA's DecomposeGEPExpression, which recently began using a TargetData. This fixes PR8968, though the testcase is awkward to reduce. Also, update several off GetUnderlyingObject's users which happen to have a TargetData handy to pass it in. llvm-svn: 124134
* fix PR8928 by clearing a stale map, patch by Jakub Staszak!Chris Lattner2011-01-241-0/+1
| | | | llvm-svn: 124132
* Handle strings in section names the same way as gas:Rafael Espindola2011-01-241-3/+14
| | | | | | | * If the name is a single string, we remove the quotes * If the name starts without a quote, we include any quotes in the name llvm-svn: 124127
* Add a comment.Dan Gohman2011-01-241-0/+1
| | | | llvm-svn: 124126
* Support/CommandLine: Fix LookupNearestOption to also search extra option names.Daniel Dunbar2011-01-241-10/+25
| | | | llvm-svn: 124124
* fix a missing shuffle pattern, PR9009. Patch by Artiom Myaskouvskey!Chris Lattner2011-01-241-0/+3
| | | | llvm-svn: 124102
* fix PR9017, a bug where we'd assert when promoting in unreachableChris Lattner2011-01-241-0/+3
| | | | | | code. llvm-svn: 124100
* fix PR9015, a crash linking recursive metadata.Chris Lattner2011-01-241-6/+11
| | | | llvm-svn: 124099
* this isn't a memset, we do convert dest[i] to one though :)Chris Lattner2011-01-241-8/+0
| | | | llvm-svn: 124097
* with recent work, we now optimize this into:Chris Lattner2011-01-241-20/+0
| | | | | | | | | | | define i32 @foo(i32 %x) nounwind readnone ssp { entry: %tobool = icmp eq i32 %x, 0 %tmp5 = select i1 %tobool, i32 2, i32 1 ret i32 %tmp5 } llvm-svn: 124091
* enhance SRoA to promote allocas that are used by PHI nodes. This oftenChris Lattner2011-01-241-26/+157
| | | | | | | | | | occurs because instcombine sinks loads and inserts phis. This kicks in on such apps as 175.vpr, eon, 403.gcc, xalancbmk and a bunch of times in spec2006 in some app that uses std::deque. This resolves the last of rdar://7339113. llvm-svn: 124090
* Enhance SRoA to promote allocas that are used by selects in someChris Lattner2011-01-231-1/+132
| | | | | | | | | | | | | | | | | | | | common cases. This triggers a surprising number of times in SPEC2K6 because min/max idioms end up doing this. For example, code from the STL ends up looking like this to SRoA: %202 = load i64* %__old_size, align 8, !tbaa !3 %203 = load i64* %__old_size, align 8, !tbaa !3 %204 = load i64* %__n, align 8, !tbaa !3 %205 = icmp ult i64 %203, %204 %storemerge.i = select i1 %205, i64* %__n, i64* %__old_size %206 = load i64* %storemerge.i, align 8, !tbaa !3 We can now promote both the __n and the __old_size allocas. This addresses another chunk of rdar://7339113, poor codegen on stringswitch. llvm-svn: 124088
* teach Value::isDereferenceablePointer that byval arguments are alwaysChris Lattner2011-01-231-0/+4
| | | | | | dereferencable, noticed by inspection. llvm-svn: 124085
* Add a memset loop that LoopIdiomRecognize doesn't recognize.Anders Carlsson2011-01-231-0/+8
| | | | llvm-svn: 124082
* Simplify some code with no functionality change. Make the test a lot moreNick Lewycky2011-01-231-12/+4
| | | | | | robust against smarter optimizations, using the power of FileCheck. llvm-svn: 124081
* Initialize MCNoExecStack.Rafael Espindola2011-01-231-0/+1
| | | | llvm-svn: 124079
* Add support for the --noexecstack option.Rafael Espindola2011-01-238-20/+40
| | | | llvm-svn: 124077
* Null initialize a few variables flagged byTed Kremenek2011-01-237-7/+7
| | | | | | | | | | clang's -Wuninitialized-experimental warning. While these don't look like real bugs, clang's -Wuninitialized-experimental analysis is stricter than GCC's, and these fixes have the benefit of being general nice cleanups. llvm-svn: 124073
* Add support for lowercase variants.Rafael Espindola2011-01-231-0/+14
| | | | llvm-svn: 124071
* Enhance SRoA to be more aggressive about scalarization of aggregate allocasChris Lattner2011-01-231-12/+114
| | | | | | | | | | | | that have PHI or select uses of their element pointers. This can often happen when instcombine sinks two loads into a successor, inserting a phi or select. With this patch, we can scalarize the alloca, but the pinned elements are not yet promoted. This is still a win for large aggregates where only one element is used. This fixes rdar://8904039 and part of rdar://7339113 (poor codegen on stringswitch). llvm-svn: 124070
* Convert two std::vectors to SmallVectors for a 3.4% speedup running -scalarreplCameron Zwarich2011-01-231-2/+2
| | | | | | on test-suite + SPEC2000 & SPEC2006. llvm-svn: 124068
* have AllocaInfo store the alloca being inspected, simplifying callers.Chris Lattner2011-01-231-22/+24
| | | | | | No functionality change. llvm-svn: 124067
* Rearrange some code a bit. Change MarkUnsafe to Chris Lattner2011-01-231-27/+29
| | | | | | | | handle the "Transformation preventing inst" printing, so that -scalarrepl -debug will always print the rejected instruction. No functionality change. llvm-svn: 124066
* remove an old hack that avoided creating MMX datatypes. TheChris Lattner2011-01-231-22/+1
| | | | | | X86 backend has been fixed. llvm-svn: 124064
* Use value ranges to fold ext(trunc) in SCEV when possible.Nick Lewycky2011-01-231-0/+34
| | | | llvm-svn: 124062
* Delay the creation of eh_frame so that the user can change the defaults.Rafael Espindola2011-01-234-21/+26
| | | | | | Add support for SHT_X86_64_UNWIND. llvm-svn: 124059
* Remove more duplicated code.Rafael Espindola2011-01-2310-111/+111
| | | | llvm-svn: 124056
* Remove duplicated code.Rafael Espindola2011-01-2311-79/+90
| | | | llvm-svn: 124054
* Have SCEV turn sext(x) into zext(x) when x is s>= 0. This applies many times inNick Lewycky2011-01-221-0/+4
| | | | | | "make check" alone. llvm-svn: 124046
* Add a FIXME explaining the move to a single indirect call bonus per functionEric Christopher2011-01-221-0/+5
| | | | | | that we can change from indirect to direct. llvm-svn: 124045
* Only apply the devirtualization bonus once instead of per-call site in theEric Christopher2011-01-221-2/+6
| | | | | | | | target function. Fixes part of rdar://8546196 llvm-svn: 124044
* Pass sret arguments through the stack instead of through registers in Sparc ↵Venkatraman Govindaraju2011-01-223-4/+75
| | | | | | backend. It makes the code generated more compliant with the sparc32 ABI. llvm-svn: 124030
* Added ICC, FCC as uses of movcc instruction to generate correct code when ↵Venkatraman Govindaraju2011-01-221-42/+51
| | | | | | -mattr=v9 is used. llvm-svn: 124027
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