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Fast-math flags for the bitcode

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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
This commit is contained in:
Michael Ilseman
2012-11-27 00:43:38 +00:00
parent 9205317bc3
commit 9978d7e9e5
3 changed files with 37 additions and 0 deletions
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12
llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
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@@ -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;