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| author | Toma Tabacu <toma.tabacu@imgtec.com> | 2014-12-17 12:02:58 +0000 |
|---|---|---|
| committer | Toma Tabacu <toma.tabacu@imgtec.com> | 2014-12-17 12:02:58 +0000 |
| commit | 9941195a9ff05d1f29955473e0f50655803f8e92 (patch) | |
| tree | 72018851c3433c2eb7a2f67a698fb37c418d7b98 /clang/test/CodeGen/mult-alt-generic.c | |
| parent | 636fefe25260e5a62f048d5c24d28dbf8596ad9e (diff) | |
| download | bcm5719-llvm-9941195a9ff05d1f29955473e0f50655803f8e92.tar.gz bcm5719-llvm-9941195a9ff05d1f29955473e0f50655803f8e92.zip | |
[mips] Always clobber $1 for MIPS inline asm.
Summary:
Because GCC doesn't use $1 for code generation, inline assembly code can use $1 without having to add it to the clobbers list.
LLVM, on the other hand, does not shy away from using $1, and this can cause conflicts with inline assembly which assumes GCC-like code generation.
A solution to this problem is to make Clang automatically clobber $1 for all MIPS inline assembly.
This is not the optimal solution, but it seems like a necessary compromise, for now.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D6638
llvm-svn: 224428
Diffstat (limited to 'clang/test/CodeGen/mult-alt-generic.c')
| -rw-r--r-- | clang/test/CodeGen/mult-alt-generic.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/clang/test/CodeGen/mult-alt-generic.c b/clang/test/CodeGen/mult-alt-generic.c index 6c9d789e412..303edfcf3c4 100644 --- a/clang/test/CodeGen/mult-alt-generic.c +++ b/clang/test/CodeGen/mult-alt-generic.c @@ -17,7 +17,7 @@ int marray[2]; // CHECK: @single_m void single_m() { - // CHECK: call void asm "foo $1,$0", "=*m,*m[[CLOBBERS:[a-zA-Z0-9@%{},~_ ]*\"]](i32* {{[a-zA-Z0-9@%]+}}, i32* {{[a-zA-Z0-9@%]+}}) + // CHECK: call void asm "foo $1,$0", "=*m,*m[[CLOBBERS:[a-zA-Z0-9@%{},~_$ ]*\"]](i32* {{[a-zA-Z0-9@%]+}}, i32* {{[a-zA-Z0-9@%]+}}) asm("foo %1,%0" : "=m" (mout0) : "m" (min1)); } |
