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| author | Michael Ilseman <milseman@apple.com> | 2012-11-27 00:43:38 +0000 |
|---|---|---|
| committer | Michael Ilseman <milseman@apple.com> | 2012-11-27 00:43:38 +0000 |
| commit | 9978d7e9e5c3a31afaca6f4a8706e7c65409b972 (patch) | |
| tree | 9c0c375146cbdf683fe417428c84a7a934a5fd83 /llvm/lib/Bitcode | |
| parent | 9205317bc3814acd8e898e356ccf7faed9b47090 (diff) | |
| download | bcm5719-llvm-9978d7e9e5c3a31afaca6f4a8706e7c65409b972.tar.gz bcm5719-llvm-9978d7e9e5c3a31afaca6f4a8706e7c65409b972.zip | |
Fast-math flags for the bitcode
Added in bitcode enum for the serializing of fast-math flags. Added in the reading/writing of fast-math flags from the OptimizationFlags record for BinaryOps.
llvm-svn: 168646
Diffstat (limited to 'llvm/lib/Bitcode')
| -rw-r--r-- | llvm/lib/Bitcode/Reader/BitcodeReader.cpp | 15 | ||||
| -rw-r--r-- | llvm/lib/Bitcode/Writer/BitcodeWriter.cpp | 12 |
2 files changed, 27 insertions, 0 deletions
diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp index d3c8678578d..f31637e044f 100644 --- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp +++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp @@ -2044,7 +2044,22 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { Opc == Instruction::AShr) { if (Record[OpNum] & (1 << bitc::PEO_EXACT)) cast<BinaryOperator>(I)->setIsExact(true); + } else if (isa<FPMathOperator>(I)) { + FastMathFlags FMF; + FMF.UnsafeAlgebra = + 0 != (Record[OpNum] & (1 << bitc::FMF_UNSAFE_ALGEBRA)); + FMF.NoNaNs + = 0 != (Record[OpNum] & (1 << bitc::FMF_NO_NANS)); + FMF.NoInfs + = 0 != (Record[OpNum] & (1 << bitc::FMF_NO_INFS)); + FMF.NoSignedZeros + = 0 != (Record[OpNum] & (1 << bitc::FMF_NO_SIGNED_ZEROS)); + FMF.AllowReciprocal + = 0 != (Record[OpNum] & (1 << bitc::FMF_ALLOW_RECIPROCAL)); + if (FMF.any()) + I->setFastMathFlags(FMF); } + } break; } diff --git a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp index cf3c9fd74eb..6206479b8d7 100644 --- a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp +++ b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp @@ -553,6 +553,18 @@ static uint64_t GetOptimizationFlags(const Value *V) { dyn_cast<PossiblyExactOperator>(V)) { if (PEO->isExact()) Flags |= 1 << bitc::PEO_EXACT; + } else if (const FPMathOperator *FPMO = + dyn_cast<const FPMathOperator>(V)) { + if (FPMO->hasUnsafeAlgebra()) + Flags |= 1 << bitc::FMF_UNSAFE_ALGEBRA; + if (FPMO->hasNoNaNs()) + Flags |= 1 << bitc::FMF_NO_NANS; + if (FPMO->hasNoInfs()) + Flags |= 1 << bitc::FMF_NO_INFS; + if (FPMO->hasNoSignedZeros()) + Flags |= 1 << bitc::FMF_NO_SIGNED_ZEROS; + if (FPMO->hasAllowReciprocal()) + Flags |= 1 << bitc::FMF_ALLOW_RECIPROCAL; } return Flags; |
