maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[clang] Move int <-> float scalar conversion to a separate function 

As prelude to this patch https://reviews.llvm.org/D99037, we want to
move the int-float conversion
into a separate function that can be reused by matrix cast

Differential Revision: https://reviews.llvm.org/D100051
This commit is contained in:
Saurabh Jha 2021-04-07 12:09:50 -07:00 committed by Erich Keane
parent 39ee9fd8c1
commit 7d8513b7f2
1 changed files with 33 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
clang/lib/CodeGen/CGExprScalar.cpp
View File

@ -348,6 +348,9 @@ public:
EmitImplicitIntegerSignChangeChecks(
SanOpts.has(SanitizerKind::ImplicitIntegerSignChange)) {}
};
Value *EmitScalarCast(Value *Src, QualType SrcType, QualType DstType,
llvm::Type *SrcTy, llvm::Type *DstTy,
ScalarConversionOpts Opts);
Value *
EmitScalarConversion(Value *Src, QualType SrcTy, QualType DstTy,
SourceLocation Loc,
@ -1191,6 +1194,35 @@ void ScalarExprEmitter::EmitIntegerSignChangeCheck(Value *Src, QualType SrcType,
{Src, Dst});
}
Value *ScalarExprEmitter::EmitScalarCast(Value *Src, QualType SrcType,
QualType DstType, llvm::Type *SrcTy,
llvm::Type *DstTy,
ScalarConversionOpts Opts) {
if (isa<llvm::IntegerType>(SrcTy)) {
bool InputSigned = SrcType->isSignedIntegerOrEnumerationType();
if (SrcType->isBooleanType() && Opts.TreatBooleanAsSigned) {
InputSigned = true;
}
if (isa<llvm::IntegerType>(DstTy))
return Builder.CreateIntCast(Src, DstTy, InputSigned, "conv");
if (InputSigned)
return Builder.CreateSIToFP(Src, DstTy, "conv");
return Builder.CreateUIToFP(Src, DstTy, "conv");
}
if (isa<llvm::IntegerType>(DstTy)) {
assert(SrcTy->isFloatingPointTy() && "Unknown real conversion");
if (DstType->isSignedIntegerOrEnumerationType())
return Builder.CreateFPToSI(Src, DstTy, "conv");
return Builder.CreateFPToUI(Src, DstTy, "conv");
}
if (DstTy->getTypeID() < SrcTy->getTypeID())
return Builder.CreateFPTrunc(Src, DstTy, "conv");
return Builder.CreateFPExt(Src, DstTy, "conv");
}
/// Emit a conversion from the specified type to the specified destination type,
/// both of which are LLVM scalar types.
Value *ScalarExprEmitter::EmitScalarConversion(Value *Src, QualType SrcType,
@ -1384,31 +1416,7 @@ Value *ScalarExprEmitter::EmitScalarConversion(Value *Src, QualType SrcType,
DstTy = CGF.FloatTy;
}
if (isa<llvm::IntegerType>(SrcTy)) {
bool InputSigned = SrcType->isSignedIntegerOrEnumerationType();
if (SrcType->isBooleanType() && Opts.TreatBooleanAsSigned) {
InputSigned = true;
}
if (isa<llvm::IntegerType>(DstTy))
Res = Builder.CreateIntCast(Src, DstTy, InputSigned, "conv");
else if (InputSigned)
Res = Builder.CreateSIToFP(Src, DstTy, "conv");
else
Res = Builder.CreateUIToFP(Src, DstTy, "conv");
} else if (isa<llvm::IntegerType>(DstTy)) {
assert(SrcTy->isFloatingPointTy() && "Unknown real conversion");
if (DstType->isSignedIntegerOrEnumerationType())
Res = Builder.CreateFPToSI(Src, DstTy, "conv");
else
Res = Builder.CreateFPToUI(Src, DstTy, "conv");
} else {
assert(SrcTy->isFloatingPointTy() && DstTy->isFloatingPointTy() &&
"Unknown real conversion");
if (DstTy->getTypeID() < SrcTy->getTypeID())
Res = Builder.CreateFPTrunc(Src, DstTy, "conv");
else
Res = Builder.CreateFPExt(Src, DstTy, "conv");
}
Res = EmitScalarCast(Src, SrcType, DstType, SrcTy, DstTy, Opts);
if (DstTy != ResTy) {
if (CGF.getContext().getTargetInfo().useFP16ConversionIntrinsics()) {