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plumb preferred types down into X86_64ABIInfo::classifyArgumentType, 

no functionality change.

llvm-svn: 107115
This commit is contained in:
Chris Lattner 2010-06-29 01:14:09 +00:00
parent c1eccbc468
commit 399d22ac1b
1 changed files with 14 additions and 4 deletions
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18
clang/lib/CodeGen/TargetInfo.cpp
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@ -747,7 +747,8 @@ class X86_64ABIInfo : public ABIInfo {
ASTContext &Context,
llvm::LLVMContext &VMContext,
unsigned &neededInt,
unsigned &neededSSE) const;
unsigned &neededSSE,
const llvm::Type *PrefType) const;
public:
virtual void computeInfo(CGFunctionInfo &FI, ASTContext &Context,
@ -1292,7 +1293,8 @@ classifyReturnType(QualType RetTy, ASTContext &Context,
ABIArgInfo X86_64ABIInfo::classifyArgumentType(QualType Ty, ASTContext &Context,
llvm::LLVMContext &VMContext,
unsigned &neededInt,
unsigned &neededSSE) const {
unsigned &neededSSE,
const llvm::Type *PrefType)const{
X86_64ABIInfo::Class Lo, Hi;
classify(Ty, Context, 0, Lo, Hi);
@ -1397,9 +1399,17 @@ void X86_64ABIInfo::computeInfo(CGFunctionInfo &FI, ASTContext &Context,
// get assigned (in left-to-right order) for passing as follows...
for (CGFunctionInfo::arg_iterator it = FI.arg_begin(), ie = FI.arg_end();
it != ie; ++it) {
// If the client specified a preferred IR type to use, pass it down to
// classifyArgumentType.
const llvm::Type *PrefType = 0;
if (NumPrefTypes) {
PrefType = *PrefTypes++;
--NumPrefTypes;
}
unsigned neededInt, neededSSE;
it->info = classifyArgumentType(it->type, Context, VMContext,
neededInt, neededSSE);
neededInt, neededSSE, PrefType);
// AMD64-ABI 3.2.3p3: If there are no registers available for any
// eightbyte of an argument, the whole argument is passed on the
@ -1480,7 +1490,7 @@ llvm::Value *X86_64ABIInfo::EmitVAArg(llvm::Value *VAListAddr, QualType Ty,
Ty = CGF.getContext().getCanonicalType(Ty);
ABIArgInfo AI = classifyArgumentType(Ty, CGF.getContext(), VMContext,
neededInt, neededSSE);
neededInt, neededSSE, 0);
// AMD64-ABI 3.5.7p5: Step 1. Determine whether type may be passed
// in the registers. If not go to step 7.