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i965: Don't copy propagate constants from sources with saturate

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We don't propagate the saturate bit and some instructions can't
saturate at all.  If the source has saturate set, just skip propagation.

Signed-off-by: Kristian Høgsberg <krh@bitplanet.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Kristian Høgsberg 2014-10-27 23:42:41 -07:00
parent 47aaabda47
commit 840e8fc920
1 changed files with 2 additions and 0 deletions
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2
src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp
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@ -425,6 +425,8 @@ fs_visitor::try_constant_propagate(fs_inst *inst, acp_entry *entry)
if (entry->src.file != IMM)
return false;
if (entry->saturate)
return false;
for (int i = inst->sources - 1; i >= 0; i--) {
if (inst->src[i].file != GRF)