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i965/fs: Extend remove_duplicate_mrf_writes() to handle non-VGRF to MRF copies.

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Cc: "12.0" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Francisco Jerez 2016-05-25 13:17:41 -07:00
parent 4fe4f6e8a7
commit 303ec22ed6
1 changed files with 8 additions and 8 deletions
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16
src/mesa/drivers/dri/i965/brw_fs.cpp
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@ -3112,18 +3112,18 @@ fs_visitor::remove_duplicate_mrf_writes()
}
/* Clear out any MRF move records whose sources got overwritten. */
if (inst->dst.file == VGRF) {
for (unsigned int i = 0; i < ARRAY_SIZE(last_mrf_move); i++) {
if (last_mrf_move[i] &&
last_mrf_move[i]->src[0].nr == inst->dst.nr) {
last_mrf_move[i] = NULL;
}
}
for (unsigned i = 0; i < ARRAY_SIZE(last_mrf_move); i++) {
if (last_mrf_move[i] &&
regions_overlap(inst->dst, inst->regs_written * REG_SIZE,
last_mrf_move[i]->src[0],
last_mrf_move[i]->regs_read(0) * REG_SIZE)) {
last_mrf_move[i] = NULL;
}
}
if (inst->opcode == BRW_OPCODE_MOV &&
inst->dst.file == MRF &&
inst->src[0].file == VGRF &&
inst->src[0].file != ARF &&
!inst->is_partial_write()) {
last_mrf_move[inst->dst.nr] = inst;
}