diff options
| author | Hal Finkel <hfinkel@anl.gov> | 2012-08-28 02:10:15 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2012-08-28 02:10:15 +0000 |
| commit | e39526a789754d8459eed63757cd6782dd2db834 (patch) | |
| tree | 955955d14b7f95bc02162205ff094ce8c0ba012c /llvm/lib/Support/Triple.cpp | |
| parent | 557a8d568bd7f32b6695162eba3be07787d9e779 (diff) | |
| download | bcm5719-llvm-e39526a789754d8459eed63757cd6782dd2db834.tar.gz bcm5719-llvm-e39526a789754d8459eed63757cd6782dd2db834.zip | |
Optimize zext on PPC64.
The zeroextend IR instruction is lowered to an 'and' node with an immediate
mask operand, which in turn gets legalised to a sequence of ori's & ands.
This can be done more efficiently using the rldicl instruction.
Patch by Tobias von Koch.
llvm-svn: 162724
Diffstat (limited to 'llvm/lib/Support/Triple.cpp')
0 files changed, 0 insertions, 0 deletions
