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Take into account the pointer to an aggregate that is passed as a hidden 

argument when Offset is initialized.

llvm-svn: 147986
This commit is contained in:
Akira Hatanaka 2012-01-12 01:10:09 +00:00
parent 02e13e5005
commit 32604a9708
2 changed files with 18 additions and 2 deletions
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8
clang/lib/CodeGen/TargetInfo.cpp
View File

@ -3248,8 +3248,12 @@ ABIArgInfo MipsABIInfo::classifyReturnType(QualType RetTy) const {
}
void MipsABIInfo::computeInfo(CGFunctionInfo &FI) const {
FI.getReturnInfo() = classifyReturnType(FI.getReturnType());
uint64_t Offset = 0;
ABIArgInfo &RetInfo = FI.getReturnInfo();
RetInfo = classifyReturnType(FI.getReturnType());
// Check if a pointer to an aggregate is passed as a hidden argument.
uint64_t Offset = RetInfo.isIndirect() ? 8 : 0;
for (CGFunctionInfo::arg_iterator it = FI.arg_begin(), ie = FI.arg_end();
it != ie; ++it)
it->info = classifyArgumentType(it->type, Offset);

12
clang/test/CodeGen/mips64-padding-arg.c
View File

@ -29,3 +29,15 @@ void foo3(int a0, long double a1) {
foo4(1, 2, a0, a1);
}
// Insert padding after hidden argument.
//
// CHECK: define void @foo5(%struct.S0* noalias nocapture sret %agg.result, i64, fp128 %a0)
// CHECK: call void @foo6(%struct.S0* sret %tmp, i32 1, i32 2, i64 undef, fp128 %a0)
// CHECK: declare void @foo6(%struct.S0* sret, i32, i32, i64, fp128)
extern S0 foo6(int, int, long double);
S0 foo5(long double a0) {
foo6(1, 2, a0);
}