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Define __builtin_ffs[ll] with a signed argument instead of unsigned. 

GCC documents these as unsigned, but defines them as signed.

llvm-svn: 162106
This commit is contained in:
Benjamin Kramer 2012-08-17 16:39:13 +00:00
parent 2da9d6d6cf
commit 0e72d5c3e5
2 changed files with 8 additions and 3 deletions
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6
clang/include/clang/Basic/Builtins.def
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@ -376,9 +376,9 @@ BUILTIN(__builtin_ctz , "iUi" , "nc")
BUILTIN(__builtin_ctzl , "iULi" , "nc")
BUILTIN(__builtin_ctzll, "iULLi", "nc")
// TODO: int ctzimax(uintmax_t)
BUILTIN(__builtin_ffs , "iUi" , "nc")
BUILTIN(__builtin_ffsl , "iULi" , "nc")
BUILTIN(__builtin_ffsll, "iULLi", "nc")
BUILTIN(__builtin_ffs , "ii" , "nc")
BUILTIN(__builtin_ffsl , "iLi" , "nc")
BUILTIN(__builtin_ffsll, "iLLi", "nc")
BUILTIN(__builtin_parity , "iUi" , "nc")
BUILTIN(__builtin_parityl , "iULi" , "nc")
BUILTIN(__builtin_parityll, "iULLi", "nc")

5
clang/test/Sema/builtins-decl.c
View File

@ -6,3 +6,8 @@
extern unsigned int __builtin_ia32_crc32qi (unsigned int, unsigned char);
extern unsigned int __builtin_ia32_crc32hi (unsigned int, unsigned short);
extern unsigned int __builtin_ia32_crc32si (unsigned int, unsigned int);
// GCC documents these as unsigned, but they are defined with a signed argument.
extern int __builtin_ffs(int);
extern int __builtin_ffsl(long);
extern int __builtin_ffsll(long long);