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Correct the code generation for function arguments of vec3 types on x86_64 when they are greater than 128 bits. This was incorrectly coercing things like long3 into a double2.

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Add test case.

llvm-svn: 145312
This commit is contained in:
Tanya Lattner
2011-11-28 23:18:11 +00:00
parent a7c7e2bb84
commit 71f1b2dcd4
2 changed files with 9 additions and 1 deletions
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2
clang/lib/CodeGen/TargetInfo.cpp
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@@ -1427,7 +1427,7 @@ llvm::Type *X86_64ABIInfo::GetByteVectorType(QualType Ty) const {
if (llvm::VectorType *VT = dyn_cast<llvm::VectorType>(IRType)){
llvm::Type *EltTy = VT->getElementType();
unsigned BitWidth = VT->getBitWidth();
if ((BitWidth == 128 || BitWidth == 256) &&
if ((BitWidth >= 128 && BitWidth <= 256) &&
(EltTy->isFloatTy() || EltTy->isDoubleTy() ||
EltTy->isIntegerTy(8) || EltTy->isIntegerTy(16) ||
EltTy->isIntegerTy(32) || EltTy->isIntegerTy(64) ||

8
clang/test/CodeGen/x86_64-arguments.c
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@@ -318,3 +318,11 @@ int f44(int i, ...) {
__builtin_va_end(ap);
return s.y;
}
// Text that vec3 returns the correct LLVM IR type.
// CHECK: define i32 @foo(<3 x i64> %X)
typedef long long3 __attribute((ext_vector_type(3)));
int foo(long3 X)
{
return 0;
}