Added option -enable-finite-only-fp-math. When on, the codegen can assume that
FP arithmetic arguments and results are never NaNs or +=Infs. This includes
ignoring parity flag (PF) when checking for FP equality.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28432 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/TargetMachine.cpp b/lib/Target/TargetMachine.cpp
index 24e1e5a..28f3ae8 100644
--- a/lib/Target/TargetMachine.cpp
+++ b/lib/Target/TargetMachine.cpp
@@ -26,6 +26,7 @@
bool NoFramePointerElim;
bool NoExcessFPPrecision;
bool UnsafeFPMath;
+ bool FiniteOnlyFPMath;
Reloc::Model RelocationModel;
};
namespace {
@@ -48,6 +49,11 @@
cl::desc("Enable optimizations that may decrease FP precision"),
cl::location(UnsafeFPMath),
cl::init(false));
+ cl::opt<bool, true>
+ EnableFiniteOnltFPMath("enable-finite-only-fp-math",
+ cl::desc("Enable optimizations that assumes non- NaNs / +-Infs"),
+ cl::location(FiniteOnlyFPMath),
+ cl::init(false));
cl::opt<llvm::Reloc::Model, true>
DefRelocationModel(
"relocation-model",