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2012-10-31instcombine: Split out the __stpcpy_chk simplifications from StrCpyChkOptMeador Inge
r166198 migrated the strcpy optimization to instcombine. The strcpy simplifier that was migrated from Transforms/Scalar/SimplifyLibCalls.cpp was also doing some __strcpy_chk simplifications. Those fortified simplifications were migrated as well, but introduced a bug in the __stpcpy_chk simplifier in the process. This happened because the __strcpy_chk and __stpcpy_chk simplifiers were both mapped to StrCpyChkOpt which was updated with simplifications that worked for __strcpy_chk, but not __stpcpy_chk. This patch fixes the problem by adding proper test coverage and creating a new simplifier for __stpcpy_chk (instead of sharing one with __strcpy_chk). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167082 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30X86 SSE: update rsqrtss and rcpss to use two source operands andManman Ren
the first source operand is tied to the destination operand. This is to accurately model the corresponding instructions where the upper bits are unmodified. rdar://12558838 PR14221 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167064 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30Fix regression in old-style JIT.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167057 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30X86 MMX: optimize transfer from mmx to i32Manman Ren
We used to generate a store (movq) + a load. Now we use movd. rdar://9946746 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167056 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30Add documentation.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167055 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30Reformat and 80-column this. It's not strictly conformingEric Christopher
yet, but it's better. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167053 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30Fix PR14212: For some strange reason I treated vectors differently fromChandler Carruth
integers in that the code to handle split alloca-wide integer loads or stores doesn't come first. It should, for the same reasons as with integers, and the PR attests to that. Also had to fix a busted assert in that this test case also covers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167051 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30[inline asm] Get the mayLoad/mayStore directly from the MIOp_ExtraInfo operand.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167050 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30BBVectorize: Cache fixed-order pairs instead of recomputing pointer info.Hal Finkel
Instead of recomputing relative pointer information just prior to fusing, cache this information (which also needs to be computed during the candidate-pair selection process). This cuts down on the total number of SE queries made, and also is a necessary intermediate step on the road toward including shuffle costs in the pair selection procedure. No functionality change is intended. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167049 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30[mips] Allow tail-call optimization for vararg functions and functions whichAkira Hatanaka
use the caller's stack. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167048 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30Add a comment for r167040.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167046 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30LoopIdiom: Fix a serious missed optimization: we only turned top-level loops ↵Benjamin Kramer
into memmove. Thanks to Preston Briggs for catching this! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167045 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30BBVectorize: Fix a small bug introduced in r167042.Hal Finkel
We need to make sure that we take the correct load/store alignment when the inputs are flipped. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167044 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30Add code for saving formal argument information to MipsFunctionInfo. ThisAkira Hatanaka
information will be used by IsEligibleForTailCallOptimization to determine whether a call can be tail-call optimized. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167043 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30BBVectorize: Simplify how input swapping is handled.Hal Finkel
Stop propagating the FlipMemInputs variable into the routines that create the replacement instructions. Instead, just flip the arguments of those routines. This allows for some associated cleanup (not all of which is done here). No functionality change is intended. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167042 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30Add definition of function MipsTargetLowering::passArgOnStack which emits nodesAkira Hatanaka
for passing a function call argument on a stack. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167041 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30[inline asm] Implement mayLoad and mayStore for inline assembly. In general,Chad Rosier
the MachineInstr MayLoad/MayLoad flags are based on the tablegen implementation. For inline assembly, however, we need to compute these based on the constraints. Revert r166929 as this is no longer needed, but leave the test case in place. rdar://12033048 and PR13504 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167040 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30Do not do tail-call optimization if target is mips16.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167039 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30BBVectorize: Don't make calls to SE when the result is unused.Hal Finkel
SE was being called during the instruction-fusion process (when the result is unreliable, and thus ignored). No functionality change is intended. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167037 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-3080-colNadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167036 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30LoopVectorize: Add support for write-only loops when the write destination ↵Nadav Rotem
is a single pointer. Speedup SciMark by 1% git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167035 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30PowerPC: Expand FSRQT for vector typesAdhemerval Zanella
This patch expands FSQRT for floating point vector types when altivec is used. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167034 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30LoopVectorize: Fix a bug in the initialization of reduction variables. AND ↵Nadav Rotem
needs to start at all-one while XOR, and OR need to start at zero. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167032 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30Fix grammar.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167029 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30Enable ELF machine type to be specified explicitly in X86 backendMichael Liao
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167027 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30Change ForceSizeOpt attribute into MinSize attributeQuentin Colombet
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167020 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30Fix isEliminableCastPair to work correctly in the presence of pointersDuncan Sands
with different sizes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167018 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30PowerPC: More support for Altivec compare operationsAdhemerval Zanella
This patch adds more support for vector type comparisons using altivec. It adds correct support for v16i8, v8i16, v4i32, and v4f32 vector types for comparison operators ==, !=, >, >=, <, and <=. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167015 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30Add a helper for telling whether a type is a pointer or vector of pointer type.Duncan Sands
Simplify the implementation of the corresponding integer and float functions and move them inline while there. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167014 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30Enable some additional constant folding for PPCDoubleDouble.Ulrich Weigand
This fixes Clang :: CodeGen/complex-builtints.c on PowerPC. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167013 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30Use TargetTransformInfo to control switch-to-lookup table transformationHans Wennborg
When the switch-to-lookup tables transform landed in SimplifyCFG, it was pointed out that this could be inappropriate for some targets. Since there was no way at the time for the pass to know anything about the target, an awkward reverse-transform was added in CodeGenPrepare that turned lookup tables back into switches for some targets. This patch uses the new TargetTransformInfo to determine if a switch should be transformed, and removes CodeGenPrepare::ConvertLoadToSwitch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167011 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30Remove an invalid assert in TargetTransformImplHal Finkel
getCastInstrCost had an assert prohibiting scalar to vector casts. Such casts, however, are allowed. This should make the vectorizer buildbot happier. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166998 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30ARM: Better disassembly for pc-relative LDR.Jim Grosbach
When the operand is a plain immediate rather than a label, print it as [pc, #imm] like we do for the Thumb2 wide encoding variant. rdar://12154503 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166991 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30Change mips16 delay slot jumps to non delay slot forms by default.Reed Kotler
We will make them delay slot forms if there is something that can be placed in the delay slot during a separate pass. Mips16 extended instructions cannot be placed in delay slots. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166990 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30LoopVectorizer: change debug prints: Print the module identifier when ↵Nadav Rotem
deciding to vectorize. When deciding not to vectorize do not print the called function name because it can be null. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166989 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30Re-commit r166971. I reverted it to quickly, when buildbots didn't have a chanceJakub Staszak
to test it with chapni's fix (-mattr=+avx). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166985 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-29Fix ARM's b.w instruction for thumb 2 and the encoding T4. The branch targetKevin Enderby
is 24 bits not 20 and the decoding needed to correctly handle converting the J1 and J2 bits to their I1 and I2 values to reconstruct the displacement. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166982 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-29Revert r166971. It causes buildbot failure. To be investigated.Jakub Staszak
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166979 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-29Avoid a code path that asserts we're in Nacl unless we're really in Nacl.Eli Bendersky
An optimization path in MCELFStreamer::EmitInstToData assumes we're in Nacl (by calling ShouldCreateNewFragments). This was now predicated properly on isBundlingEnabled. This also fixes 14 LLVM test failures (part of Issue #1711 effort). BUG= http://code.google.com/p/nativeclient/issues/detail?id=1711 Review URL: https://codereview.chromium.org/11269058
2012-10-29Remove unused variable.Jakub Staszak
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166973 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-29Simplify code. No functionality change.Jakub Staszak
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166972 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-29Allow to fold vector load if there is more than one bitcast, so in the case:Jakub Staszak
%0 = load <8 x i16>* %dest %1 = shufflevector <8 x i16> %0, <8 x i16> %in, <8 x i32> < i32 0, i32 1, i32 2, i32 3, i32 13, i32 undef, i32 14, i32 14> store <8 x i16> %1, <8 x i16>* %dest We get: vmovlpd (%eax), %xmm0, %xmm0 instead of: vmovaps (%eax), %xmm1 vmovsd %xmm1, %xmm0, %xmm0 No extra test-case is added. I just fixed the existing one (also it uses FileCheck now). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166971 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-29LoopVectorize: Update and preserve the dominator tree info.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166970 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-29This patch solves a problem with passing varargs parameters under the PPC64Bill Schmidt
ELF ABI. A varargs parameter consisting of a single-precision floating-point value, or of a single-element aggregate containing a single-precision floating-point value, must be passed in the low-order (rightmost) four bytes of the doubleword stack slot reserved for that parameter. If there are GPR protocol registers remaining, the parameter must also be mirrored in the low-order four bytes of the reserved GPR. Prior to this patch, such parameters were being passed in the high-order four bytes of the stack slot and the mirrored GPR. The patch adds a new test case to verify the correct code generation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166968 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-29Implement patterns for extloadi8 and extloadi16Reed Kotler
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166960 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-29In various places throughout the code generator, there were specialUlrich Weigand
checks to avoid performing compile-time arithmetic on PPCDoubleDouble. Now that APFloat supports arithmetic on PPCDoubleDouble, those checks are no longer needed, and we can treat the type like any other. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166958 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-29APFloat cleanup: Remove now unused "arithmeticOK" logic.Ulrich Weigand
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166954 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-29APFloat cleanup: Remove now unused fields "sign2" and "exponent2".Ulrich Weigand
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166952 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-29Implement arithmetic on APFloat with PPCDoubleDouble semantics byUlrich Weigand
treating it as if it were an IEEE floating-point type with 106-bit mantissa. This makes compile-time arithmetic on "long double" for PowerPC in clang (in particular parsing of floating point constants) work, and fixes all "long double" related failures in the test suite. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166951 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-29[ms-inline asm] Add support for the [] operator. Essentially, [expr1][expr2] isChad Rosier
equivalent to [expr1 + expr2]. See test cases for more examples. rdar://12470392 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166949 91177308-0d34-0410-b5e6-96231b3b80d8
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