fix 2xi16 to pass as i32 instead of <2 x i16>. The former passes in
memory (as required) the later now passes in an xmm register. This
fixes gcc.dg/compat/vector_1 on x86-32.
llvm-svn: 112211
diff --git a/clang/lib/CodeGen/TargetInfo.cpp b/clang/lib/CodeGen/TargetInfo.cpp
index 958f740..05bea0c 100644
--- a/clang/lib/CodeGen/TargetInfo.cpp
+++ b/clang/lib/CodeGen/TargetInfo.cpp
@@ -589,6 +589,25 @@
return getIndirectResult(Ty);
}
+ if (const VectorType *VT = Ty->getAs<VectorType>()) {
+ // On Darwin, some vectors are returned in registers.
+ if (IsDarwinVectorABI) {
+ uint64_t Size = getContext().getTypeSize(Ty);
+
+ // Always return in register if it fits in a general purpose
+ // register, or if it is 64 bits and has a single element.
+ if ((Size == 8 || Size == 16 || Size == 32) ||
+ (Size == 64 && VT->getNumElements() == 1))
+ return ABIArgInfo::getDirect(llvm::IntegerType::get(getVMContext(),
+ Size));
+
+ return ABIArgInfo::getIndirect(0);
+ }
+
+ return ABIArgInfo::getDirect();
+ }
+
+
if (const EnumType *EnumTy = Ty->getAs<EnumType>())
Ty = EnumTy->getDecl()->getIntegerType();