diff options
| -rw-r--r-- | lib/CodeGen/TargetInfo.cpp | 19 | ||||
| -rw-r--r-- | test/CodeGen/x86_32-arguments.c | 8 |
2 files changed, 26 insertions, 1 deletions
diff --git a/lib/CodeGen/TargetInfo.cpp b/lib/CodeGen/TargetInfo.cpp index 958f740bec..05bea0cf85 100644 --- a/lib/CodeGen/TargetInfo.cpp +++ b/lib/CodeGen/TargetInfo.cpp @@ -589,6 +589,25 @@ ABIArgInfo X86_32ABIInfo::classifyArgumentType(QualType Ty) const { 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(); diff --git a/test/CodeGen/x86_32-arguments.c b/test/CodeGen/x86_32-arguments.c index 01c3e236f3..4f2a6a3a38 100644 --- a/test/CodeGen/x86_32-arguments.c +++ b/test/CodeGen/x86_32-arguments.c @@ -1,4 +1,4 @@ -// RUN: %clang_cc1 -fblocks -triple i386-apple-darwin9 -emit-llvm -o %t %s +// RUN: %clang_cc1 -w -fblocks -triple i386-apple-darwin9 -emit-llvm -o %t %s // RUN: FileCheck < %t %s // CHECK: define signext i8 @f0() @@ -214,3 +214,9 @@ struct __attribute__((aligned(32))) s53 { int y; }; void f53(struct s53 x) {} + +typedef unsigned short v2i16 __attribute__((__vector_size__(4))); + +// CHECK: define i32 @f54(i32 %arg.coerce) +v2i16 f54(v2i16 arg) { return arg+arg; } + |