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| author | Dale Johannesen <dalej@apple.com> | 2008-11-07 01:28:02 +0000 |
|---|---|---|
| committer | Dale Johannesen <dalej@apple.com> | 2008-11-07 01:28:02 +0000 |
| commit | 7aad542d358a0a07512c46f755d457e80a4976fc (patch) | |
| tree | 164ecbeb215cc6e1e643b5907c8c587e581a9310 /llvm/lib/Transforms | |
| parent | eb4268d72fa08d7e35c1efdb833a5e0469f2a420 (diff) | |
| download | bcm5719-llvm-7aad542d358a0a07512c46f755d457e80a4976fc.tar.gz bcm5719-llvm-7aad542d358a0a07512c46f755d457e80a4976fc.zip | |
When we're doing a compare of load-AND-constant to 0
(e.g. a bitfield test) narrow the load as much as possible.
The has the potential to avoid unnecessary partial-word
load-after-store conflicts, which cause stalls on several targets.
Also a size win on x86 (testb vs testl).
llvm-svn: 58825
Diffstat (limited to 'llvm/lib/Transforms')
0 files changed, 0 insertions, 0 deletions
