From d7e54804eec0cddd090478c0e8eb98edcf743c74 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Thu, 26 Aug 2010 20:08:43 +0000 Subject: [PATCH] improve comments. llvm-svn: 112214 --- clang/lib/CodeGen/TargetInfo.cpp | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/clang/lib/CodeGen/TargetInfo.cpp b/clang/lib/CodeGen/TargetInfo.cpp index 05bea0cf8597..d2bd33258cd8 100644 --- a/clang/lib/CodeGen/TargetInfo.cpp +++ b/clang/lib/CodeGen/TargetInfo.cpp @@ -590,17 +590,14 @@ ABIArgInfo X86_32ABIInfo::classifyArgumentType(QualType Ty) const { } if (const VectorType *VT = Ty->getAs()) { - // On Darwin, some vectors are returned in registers. + // On Darwin, some vectors are passed in memory, we handle this by passing + // it as an i8/i16/i32/i64. 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); }