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| author | Chris Lattner <sabre@nondot.org> | 2009-12-15 09:05:13 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2009-12-15 09:05:13 +0000 |
| commit | 24aba42d048463dba0db132b6fb13c012ed30f02 (patch) | |
| tree | fc1929930c4a932baeb88949026ea5bdc0f49052 /llvm/lib/Transforms/Scalar/SimplifyLibCalls.cpp | |
| parent | 4179fa03573f8d08f13497951e3024b1e5356561 (diff) | |
| download | bcm5719-llvm-24aba42d048463dba0db132b6fb13c012ed30f02.tar.gz bcm5719-llvm-24aba42d048463dba0db132b6fb13c012ed30f02.zip | |
add some other xforms that should be done as part of PR5783
llvm-svn: 91428
Diffstat (limited to 'llvm/lib/Transforms/Scalar/SimplifyLibCalls.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/SimplifyLibCalls.cpp | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/llvm/lib/Transforms/Scalar/SimplifyLibCalls.cpp b/llvm/lib/Transforms/Scalar/SimplifyLibCalls.cpp index 0d03e55eba7..6fd884bbd6d 100644 --- a/llvm/lib/Transforms/Scalar/SimplifyLibCalls.cpp +++ b/llvm/lib/Transforms/Scalar/SimplifyLibCalls.cpp @@ -2644,10 +2644,11 @@ bool SimplifyLibCalls::doInitialization(Module &M) { // * strcspn("",a) -> 0 // * strcspn(s,"") -> strlen(a) // -// strstr: +// strstr: (PR5783) // * strstr(x,x) -> x -// * strstr(s1,s2) -> offset_of_s2_in(s1) -// (if s1 and s2 are constant strings) +// * strstr(x, "") -> x +// * strstr(x, "a") -> strchr(x, 'a') +// * strstr(s1,s2) -> result (if s1 and s2 are constant strings) // // tan, tanf, tanl: // * tan(atan(x)) -> x |
