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| author | Eli Friedman <eli.friedman@gmail.com> | 2011-11-18 00:28:11 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2011-11-18 00:28:11 +0000 |
| commit | 5a4d35247f55dae6dd0d5ad349ecadbbea0b4572 (patch) | |
| tree | d2aa42a58f2fa0fcdd04a5cc333d58a480d67a02 | |
| parent | 88c2596edc8eb475e20f6033de1ea01669695a0c (diff) | |
Ignore empty unions in argument lowering on x86-32. From gcc struct layout tests.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144944 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/CodeGen/TargetInfo.cpp | 4 | ||||
| -rw-r--r-- | test/CodeGen/x86_32-arguments-darwin.c | 4 |
2 files changed, 6 insertions, 2 deletions
diff --git a/lib/CodeGen/TargetInfo.cpp b/lib/CodeGen/TargetInfo.cpp index c3d5ee19d6..b23ae304a8 100644 --- a/lib/CodeGen/TargetInfo.cpp +++ b/lib/CodeGen/TargetInfo.cpp @@ -700,8 +700,8 @@ ABIArgInfo X86_32ABIInfo::classifyArgumentType(QualType Ty) const { return getIndirectResult(Ty); } - // Ignore empty structs. - if (Ty->isStructureType() && getContext().getTypeSize(Ty) == 0) + // Ignore empty structs/unions. + if (Ty->isRecordType() && getContext().getTypeSize(Ty) == 0) return ABIArgInfo::getIgnore(); // Expand small (<= 128-bit) record types when we know that the stack layout diff --git a/test/CodeGen/x86_32-arguments-darwin.c b/test/CodeGen/x86_32-arguments-darwin.c index c3af7fbc04..b31262fc96 100644 --- a/test/CodeGen/x86_32-arguments-darwin.c +++ b/test/CodeGen/x86_32-arguments-darwin.c @@ -280,3 +280,7 @@ void f56(char a0, struct s56_0 a1, // CHECK: call void @f57( struct s57 { _Complex int x; }; void f57(struct s57 x) {} void f57a(void) { f57((struct s57){1}); } + +union u58 {}; +void f58(union u58 x) {} +// CHECK: define void @f58() |