diff options
| author | Matt Turner <[email protected]> | 2016-02-22 10:25:38 -0800 |
|---|---|---|
| committer | Matt Turner <[email protected]> | 2016-02-25 10:51:04 -0800 |
| commit | 1567da1e2820d4c1a6c14f4598ad3addba6bc788 (patch) | |
| tree | b348940bf767e42a62ba87248a54fbd434e3f9ec /src/egl | |
| parent | 3da789f1e9e3eb027bcfdb9d9170e7b37160b5b9 (diff) | |
i965/fs: Don't CSE negated multiplies with saturation.
It's not correct to CSE these multiplies
mul.sat dst1, -a, b
mul.sat dst2, a, b
by emitting a negated MOV from dst1 to dst2:
mul.sat dst1, -a, b
mov dst2, -dst1
Take 2.0*2.0 for example. The first multiply would produce 0.0 and the
second would produce 1.0.
Fixes bad generated code in 18 to 22 shaders:
instructions in affected programs: 432 -> 464 (7.41%)
helped: 4
HURT: 18
Cc: [email protected]
Reviewed-by: Ian Romanick <[email protected]>
Diffstat (limited to 'src/egl')
0 files changed, 0 insertions, 0 deletions