Add a "loses information" return value to APFloat::convert
and APFloat::convertToInteger. Restore return value to
IEEE754. Adjust all users accordingly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57329 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index 8cb5e4f..60da031 100644
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -7856,8 +7856,10 @@
/// FitsInFPType - Return a Constant* for the specified FP constant if it fits
/// in the specified FP type without changing its value.
static Constant *FitsInFPType(ConstantFP *CFP, const fltSemantics &Sem) {
+ bool losesInfo;
APFloat F = CFP->getValueAPF();
- if (F.convert(Sem, APFloat::rmNearestTiesToEven) == APFloat::opOK)
+ (void)F.convert(Sem, APFloat::rmNearestTiesToEven, &losesInfo);
+ if (!losesInfo)
return ConstantFP::get(F);
return 0;
}