diff options
| author | Rob Clark <[email protected]> | 2016-04-05 12:39:47 -0400 |
|---|---|---|
| committer | Rob Clark <[email protected]> | 2016-04-05 15:04:25 -0400 |
| commit | f9cdbf44054009122fcc16c887fb90ccc33b52c9 (patch) | |
| tree | 592fcae6b07a4a68f22ef6ddee239f0d9c2aceec /src/compiler/glsl/linker.h | |
| parent | 0daab9878d2b96356cf667591a2c877d912be52d (diff) | |
freedreno/ir3: eliminate unnecessary absneg's
The frontend inserts (abs) and (neg)'s to convert between NIR boolean
(~0/0) and native boolean (1/0). So we'd end up with things like:
cmps.s.ge r1.x, ...
absneg.s r1.x, (neg)r1.x
absneg.s r1.x, (abs)r1.x
sel.b32 r2.x, r0.x, r1.x, r0.y
The (neg) already gets collapsed due to the following (abs). Now by
realizing that r1.x comes from a cmps.s instruction, we can drop the
(abs) as well.
Signed-off-by: Rob Clark <[email protected]>
Diffstat (limited to 'src/compiler/glsl/linker.h')
0 files changed, 0 insertions, 0 deletions