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i965/fs: Don't use if_block/else_block in SEL peephole.

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Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
This commit is contained in:
Matt Turner 2014-11-10 22:02:38 -08:00
parent 20a061d2b4
commit 4001181ba3
1 changed files with 11 additions and 6 deletions
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17
src/mesa/drivers/dri/i965/brw_fs_sel_peephole.cpp
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@ -132,16 +132,21 @@ fs_visitor::opt_peephole_sel()
if (if_inst->opcode != BRW_OPCODE_IF)
continue;
if (!block->else_block)
continue;
assert(block->else_block->end()->opcode == BRW_OPCODE_ELSE);
fs_inst *else_mov[MAX_MOVS] = { NULL };
fs_inst *then_mov[MAX_MOVS] = { NULL };
bblock_t *then_block = block->next();
bblock_t *else_block = block->else_block->next();
bblock_t *else_block = NULL;
foreach_list_typed(bblock_link, child, link, &block->children) {
if (child->block != then_block) {
if (child->block->prev()->end()->opcode == BRW_OPCODE_ELSE) {
else_block = child->block;
}
break;
}
}
if (else_block == NULL)
continue;
int movs = count_movs_from_if(then_mov, else_mov, then_block, else_block);