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i965/vec4: do not predicate scratch writes for BRW_OPCODE_SEL instructions

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The dst is always written, in this case the predicate is only used to select
the value to write, so if we are spilling the dst we always want to write
whatever value we selected to scratch.

Reviewed-by: Francisco Jerez <currojerez@riseup.net>
This commit is contained in:
Iago Toral Quiroga
2015-07-31 14:36:30 +02:00
parent 42d283a0cc
commit f246aa6bca
1 changed files with 2 additions and 1 deletions
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src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
+2 -1
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@@ -3482,7 +3482,8 @@ vec4_visitor::emit_scratch_write(bblock_t *block, vec4_instruction *inst,
dst_reg dst = dst_reg(brw_writemask(brw_vec8_grf(0, 0),
inst->dst.writemask));
vec4_instruction *write = SCRATCH_WRITE(dst, temp, index);
write->predicate = inst->predicate;
if (inst->opcode != BRW_OPCODE_SEL)
write->predicate = inst->predicate;
write->ir = inst->ir;
write->annotation = inst->annotation;
inst->insert_after(block, write);