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| author | Bill Wendling <isanbard@gmail.com> | 2008-11-30 13:52:49 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2008-11-30 13:52:49 +0000 |
| commit | b01865c210f4272904b3b3099474ee7f43bc7bec (patch) | |
| tree | 575c6c446caa69f5b369926dbc4174d22ec2269d /lib/Target/README.txt | |
| parent | 7f0ef6b325d0f6061c584ab93ebb083b87bca4ff (diff) | |
| download | llvm-b01865c210f4272904b3b3099474ee7f43bc7bec.tar.gz llvm-b01865c210f4272904b3b3099474ee7f43bc7bec.tar.bz2 llvm-b01865c210f4272904b3b3099474ee7f43bc7bec.tar.xz | |
Add instruction combining for ((A&~B)|(~A&B)) -> A^B and all permutations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60291 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/README.txt')
| -rw-r--r-- | lib/Target/README.txt | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/lib/Target/README.txt b/lib/Target/README.txt index bf7c0b1447..17b830d5d4 100644 --- a/lib/Target/README.txt +++ b/lib/Target/README.txt @@ -1171,12 +1171,6 @@ Should combine to "a | 1". Currently not optimized with "clang //===---------------------------------------------------------------------===// -int a(int a, int b, int c) {return ((a&~b) | (~a&b));} -Should fold to xor. Currently not optimized with "clang -emit-llvm-bc -| opt -std-compile-opts". - -//===---------------------------------------------------------------------===// - int a(int a, int b, int c) {return (~a & c) | ((c|a) & b);} Should fold to "(~a & c) | (a & b)". Currently not optimized with "clang -emit-llvm-bc | opt -std-compile-opts". |