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| author | Andrew Kaylor <andrew.kaylor@intel.com> | 2017-08-14 21:15:13 +0000 |
|---|---|---|
| committer | Andrew Kaylor <andrew.kaylor@intel.com> | 2017-08-14 21:15:13 +0000 |
| commit | 53a5fbb45fa45cba48963a6b17defa4c4f072d9d (patch) | |
| tree | 750f3d0408337c88a5ee993680853096b47bbbdf /llvm/lib/Analysis/ConstantFolding.cpp | |
| parent | 8bf15723ae9cf59a7171981b1b0257de4d48e344 (diff) | |
| download | bcm5719-llvm-53a5fbb45fa45cba48963a6b17defa4c4f072d9d.tar.gz bcm5719-llvm-53a5fbb45fa45cba48963a6b17defa4c4f072d9d.zip | |
Add strictfp attribute to prevent unwanted optimizations of libm calls
Differential Revision: https://reviews.llvm.org/D34163
llvm-svn: 310885
Diffstat (limited to 'llvm/lib/Analysis/ConstantFolding.cpp')
| -rw-r--r-- | llvm/lib/Analysis/ConstantFolding.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/llvm/lib/Analysis/ConstantFolding.cpp b/llvm/lib/Analysis/ConstantFolding.cpp index 0f5ec3f5626..e88b8f14d54 100644 --- a/llvm/lib/Analysis/ConstantFolding.cpp +++ b/llvm/lib/Analysis/ConstantFolding.cpp @@ -1359,7 +1359,7 @@ llvm::ConstantFoldLoadThroughGEPIndices(Constant *C, // bool llvm::canConstantFoldCallTo(ImmutableCallSite CS, const Function *F) { - if (CS.isNoBuiltin()) + if (CS.isNoBuiltin() || CS.isStrictFP()) return false; switch (F->getIntrinsicID()) { case Intrinsic::fabs: @@ -2066,7 +2066,7 @@ Constant * llvm::ConstantFoldCall(ImmutableCallSite CS, Function *F, ArrayRef<Constant *> Operands, const TargetLibraryInfo *TLI) { - if (CS.isNoBuiltin()) + if (CS.isNoBuiltin() || CS.isStrictFP()) return nullptr; if (!F->hasName()) return nullptr; @@ -2084,7 +2084,7 @@ llvm::ConstantFoldCall(ImmutableCallSite CS, Function *F, bool llvm::isMathLibCallNoop(CallSite CS, const TargetLibraryInfo *TLI) { // FIXME: Refactor this code; this duplicates logic in LibCallsShrinkWrap // (and to some extent ConstantFoldScalarCall). - if (CS.isNoBuiltin()) + if (CS.isNoBuiltin() || CS.isStrictFP()) return false; Function *F = CS.getCalledFunction(); if (!F) |
