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| author | Tom Stellard <thomas.stellard@amd.com> | 2014-04-07 19:45:41 +0000 |
|---|---|---|
| committer | Tom Stellard <thomas.stellard@amd.com> | 2014-04-07 19:45:41 +0000 |
| commit | 50122a58906e36184fd2a0f95944fbca6c6b08f0 (patch) | |
| tree | 2b8e17845f7bb419600d3955ed8b7da3608e9398 /llvm/lib/Transforms | |
| parent | 3cbe014027270091a946de3ed48ce1206e728596 (diff) | |
| download | bcm5719-llvm-50122a58906e36184fd2a0f95944fbca6c6b08f0.tar.gz bcm5719-llvm-50122a58906e36184fd2a0f95944fbca6c6b08f0.zip | |
R600: Match 24-bit arithmetic patterns in a Target DAGCombine
Moving these patterns from TableGen files to PerformDAGCombine()
should allow us to generate better code by eliminating unnecessary
shifts and extensions earlier.
This also fixes a bug where the MAD pattern was calling
SimplifyDemandedBits with a 24-bit mask on the first operand
even when the full pattern wasn't being matched. This occasionally
resulted in some instructions being incorrectly deleted from the
program.
v2:
- Fix bug with 64-bit mul
llvm-svn: 205731
Diffstat (limited to 'llvm/lib/Transforms')
0 files changed, 0 insertions, 0 deletions
