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i965/vec4: Don't lose copy propagation saturate bits for not written components. 

Reviewed-by: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
This commit is contained in:
Francisco Jerez 2015-03-18 15:45:16 +02:00
parent a3733defbe
commit 18dc59c212
1 changed files with 1 additions and 1 deletions
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2
src/mesa/drivers/dri/i965/brw_vec4_copy_propagation.cpp
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@ -437,7 +437,7 @@ vec4_visitor::opt_copy_propagation(bool do_constant_prop)
* the new value, so clear it.
*/
bool direct_copy = is_direct_copy(inst);
entries[reg].saturatemask = 0x0;
entries[reg].saturatemask &= ~inst->dst.writemask;
for (int i = 0; i < 4; i++) {
if (inst->dst.writemask & (1 << i)) {
entries[reg].value[i] = direct_copy ? &inst->src[0] : NULL;