diff options
| author | Daniel Sanders <daniel.sanders@imgtec.com> | 2015-01-14 12:00:12 +0000 |
|---|---|---|
| committer | Daniel Sanders <daniel.sanders@imgtec.com> | 2015-01-14 12:00:12 +0000 |
| commit | e90c8e8c4e4da7583df49a267d3dfe96cfc400d7 (patch) | |
| tree | dfd0119e0c5a40e9481566b9bff3a2f1649b10f4 /lib | |
| parent | 6c1b9266748d8eac3fb196b0b96fb10f0168b2f6 (diff) | |
[mips] Handle transparent unions correctly.
Summary:
This fixes MultiSource/Applications/lemon on big-endian N32 by correcting the
handling of the argument to wait(). glibc defines it as a transparent union of
void* and int*. Such unions are passed according to the rules of the first
member so the argument must be passed as if it were a void* (sign extended from
i32 to i64) and not as a union (shifted to the upper bits of an i64).
wait() already behaves correctly on big-endian O32 and N64 since the union is
already the same size as an argument slot.
Reviewers: atanasyan
Reviewed By: atanasyan
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D6963
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@225981 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/CodeGen/TargetInfo.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/CodeGen/TargetInfo.cpp b/lib/CodeGen/TargetInfo.cpp index aafe05aab6..6ad3495157 100644 --- a/lib/CodeGen/TargetInfo.cpp +++ b/lib/CodeGen/TargetInfo.cpp @@ -5693,6 +5693,8 @@ llvm::Type *MipsABIInfo::getPaddingType(uint64_t OrigOffset, ABIArgInfo MipsABIInfo::classifyArgumentType(QualType Ty, uint64_t &Offset) const { + Ty = useFirstFieldIfTransparentUnion(Ty); + uint64_t OrigOffset = Offset; uint64_t TySize = getContext().getTypeSize(Ty); uint64_t Align = getContext().getTypeAlign(Ty) / 8; |