[ARM] Pass _Float16 as int or float
Pass and return _Float16 as if it were an int or float for ARM, but with the
top 16 bits unspecified, similarly like we already do for __fp16.
We will implement proper half-precision function argument lowering in the ARM
backend soon, but want to use this workaround in the mean time.
Differential Revision: https://reviews.llvm.org/D42318
llvm-svn: 323185
diff --git a/clang/lib/CodeGen/TargetInfo.cpp b/clang/lib/CodeGen/TargetInfo.cpp
index d9d44fa..8641d87 100644
--- a/clang/lib/CodeGen/TargetInfo.cpp
+++ b/clang/lib/CodeGen/TargetInfo.cpp
@@ -5721,10 +5721,11 @@
return getNaturalAlignIndirect(Ty, /*ByVal=*/false);
}
- // __fp16 gets passed as if it were an int or float, but with the top 16 bits
- // unspecified. This is not done for OpenCL as it handles the half type
- // natively, and does not need to interwork with AAPCS code.
- if (Ty->isHalfType() && !getContext().getLangOpts().NativeHalfArgsAndReturns) {
+ // _Float16 and __fp16 get passed as if it were an int or float, but with
+ // the top 16 bits unspecified. This is not done for OpenCL as it handles the
+ // half type natively, and does not need to interwork with AAPCS code.
+ if ((Ty->isFloat16Type() || Ty->isHalfType()) &&
+ !getContext().getLangOpts().NativeHalfArgsAndReturns) {
llvm::Type *ResType = IsEffectivelyAAPCS_VFP ?
llvm::Type::getFloatTy(getVMContext()) :
llvm::Type::getInt32Ty(getVMContext());
@@ -5919,10 +5920,11 @@
return getNaturalAlignIndirect(RetTy);
}
- // __fp16 gets returned as if it were an int or float, but with the top 16
- // bits unspecified. This is not done for OpenCL as it handles the half type
- // natively, and does not need to interwork with AAPCS code.
- if (RetTy->isHalfType() && !getContext().getLangOpts().NativeHalfArgsAndReturns) {
+ // _Float16 and __fp16 get returned as if it were an int or float, but with
+ // the top 16 bits unspecified. This is not done for OpenCL as it handles the
+ // half type natively, and does not need to interwork with AAPCS code.
+ if ((RetTy->isFloat16Type() || RetTy->isHalfType()) &&
+ !getContext().getLangOpts().NativeHalfArgsAndReturns) {
llvm::Type *ResType = IsEffectivelyAAPCS_VFP ?
llvm::Type::getFloatTy(getVMContext()) :
llvm::Type::getInt32Ty(getVMContext());