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ARM/[A]APCS: Ignore empty records passed as arguments. 

llvm-svn: 81798
This commit is contained in:
Daniel Dunbar 2009-09-14 21:54:03 +00:00
parent 0e795ffbb0
commit 09d3362bf5
2 changed files with 12 additions and 0 deletions
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4
clang/lib/CodeGen/TargetABIInfo.cpp
View File

@ -1395,6 +1395,10 @@ ABIArgInfo ARMABIInfo::classifyArgumentType(QualType Ty,
return (Ty->isPromotableIntegerType() ?
ABIArgInfo::getExtend() : ABIArgInfo::getDirect());
// Ignore empty records.
if (isEmptyRecord(Context, Ty, true))
return ABIArgInfo::getIgnore();
// FIXME: This is kind of nasty... but there isn't much choice because the ARM
// backend doesn't support byval.
// FIXME: This doesn't handle alignment > 64 bits.

8
clang/test/CodeGen/arm-arguments.c
View File

@ -84,3 +84,11 @@ struct s13 f13(void) {}
// AAPCS: define arm_aapcscc i32 @f14()
union u14 { float f0; };
union u14 f14(void) {}
// APCS-GNU: define arm_apcscc void @f15()
// AAPCS: define arm_aapcscc void @f15()
void f15(struct s7 a0) {}
// APCS-GNU: define arm_apcscc void @f16()
// AAPCS: define arm_aapcscc void @f16()
void f16(struct s8 a0) {}