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[mips] Use the distance between the current argument's starting address and

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the previous argument's ending address to compute the type of the padding
argument.

No intended functionality change.

llvm-svn: 193638
This commit is contained in:
Akira Hatanaka
2013-10-29 18:41:15 +00:00
parent 88034af278
commit ddd6634340
1 changed files with 10 additions and 11 deletions
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21
clang/lib/CodeGen/TargetInfo.cpp
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@@ -4766,13 +4766,12 @@ llvm::Type* MipsABIInfo::HandleAggregates(QualType Ty, uint64_t TySize) const {
return llvm::StructType::get(getVMContext(), ArgList);
}
llvm::Type *MipsABIInfo::getPaddingType(uint64_t Align, uint64_t Offset) const {
assert((Offset % MinABIStackAlignInBytes) == 0);
llvm::Type *MipsABIInfo::getPaddingType(uint64_t OrigOffset,
uint64_t Offset) const {
if (OrigOffset + MinABIStackAlignInBytes > Offset)
return 0;
if ((Align - 1) & Offset)
return llvm::IntegerType::get(getVMContext(), MinABIStackAlignInBytes * 8);
return 0;
return llvm::IntegerType::get(getVMContext(), (Offset - OrigOffset) * 8);
}
ABIArgInfo
@@ -4783,8 +4782,8 @@ MipsABIInfo::classifyArgumentType(QualType Ty, uint64_t &Offset) const {
Align = std::min(std::max(Align, (uint64_t)MinABIStackAlignInBytes),
(uint64_t)StackAlignInBytes);
Offset = llvm::RoundUpToAlignment(Offset, Align);
Offset += llvm::RoundUpToAlignment(TySize, Align * 8) / 8;
unsigned CurrOffset = llvm::RoundUpToAlignment(Offset, Align);
Offset = CurrOffset + llvm::RoundUpToAlignment(TySize, Align * 8) / 8;
if (isAggregateTypeForABI(Ty) || Ty->isVectorType()) {
// Ignore empty aggregates.
@@ -4800,7 +4799,7 @@ MipsABIInfo::classifyArgumentType(QualType Ty, uint64_t &Offset) const {
// another structure type. Padding is inserted if the offset of the
// aggregate is unaligned.
return ABIArgInfo::getDirect(HandleAggregates(Ty, TySize), 0,
getPaddingType(Align, OrigOffset));
getPaddingType(OrigOffset, CurrOffset));
}
// Treat an enum type as its underlying type.
@@ -4810,8 +4809,8 @@ MipsABIInfo::classifyArgumentType(QualType Ty, uint64_t &Offset) const {
if (Ty->isPromotableIntegerType())
return ABIArgInfo::getExtend();
return ABIArgInfo::getDirect(0, 0,
IsO32 ? 0 : getPaddingType(Align, OrigOffset));
return ABIArgInfo::getDirect(
0, 0, IsO32 ? 0 : getPaddingType(OrigOffset, CurrOffset));
}
llvm::Type*