The powers that be have decided that LLVM IR should now support 16-bit
"half precision" floating-point with a first-class type.
This patch adds basic IR support (but not codegen support).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146786 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AsmParser/LLParser.cpp b/lib/AsmParser/LLParser.cpp
index 4678269..bccca4f 100644
--- a/lib/AsmParser/LLParser.cpp
+++ b/lib/AsmParser/LLParser.cpp
@@ -2483,13 +2483,16 @@
!ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
return Error(ID.Loc, "floating point constant invalid for type");
- // The lexer has no type info, so builds all float and double FP constants
- // as double. Fix this here. Long double does not need this.
- if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
- Ty->isFloatTy()) {
+ // The lexer has no type info, so builds all half, float, and double FP
+ // constants as double. Fix this here. Long double does not need this.
+ if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
bool Ignored;
- ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
- &Ignored);
+ if (Ty->isHalfTy())
+ ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
+ &Ignored);
+ else if (Ty->isFloatTy())
+ ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
+ &Ignored);
}
V = ConstantFP::get(Context, ID.APFloatVal);