diff options
| author | Tim Northover <tnorthover@apple.com> | 2013-06-07 00:04:50 +0000 |
|---|---|---|
| committer | Tim Northover <tnorthover@apple.com> | 2013-06-07 00:04:50 +0000 |
| commit | 0ae939182427c1f8b6db35bea33b07379ffdfacc (patch) | |
| tree | 4c2e6b3310d6d5a2335c8f422fbe7ed58a30c90a /clang/lib/CodeGen/TargetInfo.cpp | |
| parent | 0b3175a6fccd4c8cb43627b2e834026d986828fb (diff) | |
| download | bcm5719-llvm-0ae939182427c1f8b6db35bea33b07379ffdfacc.tar.gz bcm5719-llvm-0ae939182427c1f8b6db35bea33b07379ffdfacc.zip | |
Diagnose malformed x86 inline asm using 'y' constraint.
X86's 'y' inline assembly constraint represents an MMX register, this change
prevents Clang from hitting an assertion when passed an incompatible type to
deal with.
llvm-svn: 183467
Diffstat (limited to 'clang/lib/CodeGen/TargetInfo.cpp')
| -rw-r--r-- | clang/lib/CodeGen/TargetInfo.cpp | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/clang/lib/CodeGen/TargetInfo.cpp b/clang/lib/CodeGen/TargetInfo.cpp index c4ee7246a5b..6881ea7fec0 100644 --- a/clang/lib/CodeGen/TargetInfo.cpp +++ b/clang/lib/CodeGen/TargetInfo.cpp @@ -503,8 +503,16 @@ bool IsX86_MMXType(llvm::Type *IRType) { static llvm::Type* X86AdjustInlineAsmType(CodeGen::CodeGenFunction &CGF, StringRef Constraint, llvm::Type* Ty) { - if ((Constraint == "y" || Constraint == "&y") && Ty->isVectorTy()) + if ((Constraint == "y" || Constraint == "&y") && Ty->isVectorTy()) { + if (cast<llvm::VectorType>(Ty)->getBitWidth() != 64) { + // Invalid MMX constraint + return 0; + } + return llvm::Type::getX86_MMXTy(CGF.getLLVMContext()); + } + + // No operation needed return Ty; } |
