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| author | Andrew Trick <atrick@apple.com> | 2011-09-10 01:24:17 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2011-09-10 01:24:17 +0000 |
| commit | c7868bf064f915582a1064b532c1c5fa745d92ba (patch) | |
| tree | 47e85a230e30291089fb62394d7b276a22671423 /llvm/lib/Target/TargetLoweringObjectFile.cpp | |
| parent | 0a57b2382be9d6d3c9925f9d04353813124e7ba9 (diff) | |
| download | bcm5719-llvm-c7868bf064f915582a1064b532c1c5fa745d92ba.tar.gz bcm5719-llvm-c7868bf064f915582a1064b532c1c5fa745d92ba.zip | |
[disable-iv-rewrite] Allow WidenIV to handle NSW/NUW operations
better.
Don't immediately give up when an add operation can't be trivially
sign/zero-extended within a loop. If it has NSW/NUW flags, generate a
new expression with sign extended (non-recurrent) operand. As before,
if SCEV says that all sign extends are loop invariant, then we can
widen the operation.
llvm-svn: 139453
Diffstat (limited to 'llvm/lib/Target/TargetLoweringObjectFile.cpp')
0 files changed, 0 insertions, 0 deletions
