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| author | Michael Ilseman <milseman@apple.com> | 2012-11-27 00:42:44 +0000 |
|---|---|---|
| committer | Michael Ilseman <milseman@apple.com> | 2012-11-27 00:42:44 +0000 |
| commit | 15c13d3e63d7745bccad74d547af4e3482193eaa (patch) | |
| tree | 7f27560aaf6fc5c3698d8a3a574545745350b98d /lib/VMCore | |
| parent | 4d265332341360a7cb5b15e2c2f0c675a7fed766 (diff) | |
| download | external_llvm-15c13d3e63d7745bccad74d547af4e3482193eaa.zip external_llvm-15c13d3e63d7745bccad74d547af4e3482193eaa.tar.gz external_llvm-15c13d3e63d7745bccad74d547af4e3482193eaa.tar.bz2 | |
Fast-math flags for LLVM IR parsing and printing
Added in the ability to read LLVM IR text that contains fast-math flags as a sequence of capital letters separated by spaces in any order. Added in the printing of the fast-math flags in a canonical order, and don't print the other flags when 'fast' is specified, as 'fast' implies all the others.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168645 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/VMCore')
| -rw-r--r-- | lib/VMCore/AsmWriter.cpp | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/lib/VMCore/AsmWriter.cpp b/lib/VMCore/AsmWriter.cpp index c45a04f..433f3e0 100644 --- a/lib/VMCore/AsmWriter.cpp +++ b/lib/VMCore/AsmWriter.cpp @@ -703,6 +703,22 @@ static void writeAtomicRMWOperation(raw_ostream &Out, } static void WriteOptimizationInfo(raw_ostream &Out, const User *U) { + if (const FPMathOperator *FPO = dyn_cast<const FPMathOperator>(U)) { + // Unsafe algebra implies all the others, no need to write them all out + if (FPO->hasUnsafeAlgebra()) + Out << " fast"; + else { + if (FPO->hasNoNaNs()) + Out << " nnan"; + if (FPO->hasNoInfs()) + Out << " ninf"; + if (FPO->hasNoSignedZeros()) + Out << " nsz"; + if (FPO->hasAllowReciprocal()) + Out << " arcp"; + } + } + if (const OverflowingBinaryOperator *OBO = dyn_cast<OverflowingBinaryOperator>(U)) { if (OBO->hasNoUnsignedWrap()) |