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| author | Bill Wendling <isanbard@gmail.com> | 2008-12-01 01:07:11 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2008-12-01 01:07:11 +0000 |
| commit | 5b902c5b1ea925f4a95cb8876836a8ed85cc78c3 (patch) | |
| tree | 29e9a27913679e6ce3e13ab107ded5984a5e3935 /llvm/lib/Target | |
| parent | 6f0730ff1110c196173096f7170de7b0ad990803 (diff) | |
| download | bcm5719-llvm-5b902c5b1ea925f4a95cb8876836a8ed85cc78c3.tar.gz bcm5719-llvm-5b902c5b1ea925f4a95cb8876836a8ed85cc78c3.zip | |
Implement ((A|B)&1)|(B&-2) -> (A&1) | B transformation. This also takes care of
permutations of this pattern.
llvm-svn: 60312
Diffstat (limited to 'llvm/lib/Target')
| -rw-r--r-- | llvm/lib/Target/README.txt | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/llvm/lib/Target/README.txt b/llvm/lib/Target/README.txt index 17b830d5d4a..fb6b0cd53d5 100644 --- a/llvm/lib/Target/README.txt +++ b/llvm/lib/Target/README.txt @@ -1147,12 +1147,6 @@ There's an unnecessary zext in the generated code with "clang //===---------------------------------------------------------------------===// -int a(int a, int b) {return ((a|b)&1) | (b&-2);} -Should be combined to "(a&1)|b". Currently not optimized with "clang --emit-llvm-bc | opt -std-compile-opts". - -//===---------------------------------------------------------------------===// - int a(unsigned b) {return ((b << 31) | (b << 30)) >> 31;} Should be combined to "((b >> 1) | b) & 1". Currently not optimized with "clang -emit-llvm-bc | opt -std-compile-opts". |
