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Revert "i965/vec4: Don't lose the saturate modifier in copy propagation."

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This reverts commit 0dfec59a27.  The
change prevented propagation of copies with the saturate flag set,
making the whole saturate mask tracking completely useless.  A proper
fix follows.

Reviewed-by: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
This commit is contained in:
Francisco Jerez 2015-03-18 15:39:03 +02:00
parent 21c829e5cc
commit a3733defbe
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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@ -440,7 +440,7 @@ vec4_visitor::opt_copy_propagation(bool do_constant_prop)
entries[reg].saturatemask = 0x0;
for (int i = 0; i < 4; i++) {
if (inst->dst.writemask & (1 << i)) {
entries[reg].value[i] = (!inst->saturate && direct_copy) ? &inst->src[0] : NULL;
entries[reg].value[i] = direct_copy ? &inst->src[0] : NULL;
entries[reg].saturatemask |= (((inst->saturate && direct_copy) ? 1 : 0) << i);
}
}