diff options
| author | Rob Clark <[email protected]> | 2017-11-10 12:54:49 -0500 |
|---|---|---|
| committer | Rob Clark <[email protected]> | 2017-11-12 12:28:59 -0500 |
| commit | 8fcee858d595f3666e0fc828cce0286342c1d71e (patch) | |
| tree | 2b408c54ba96bb8244334ddf35002a19fce6166d /src/gallium/drivers/freedreno/ir3 | |
| parent | e7b2719f69a77b9daad5c17d651b54d98720669f (diff) | |
freedreno/ir3: don't create split/fo if only writing .x
In case an instruction only writes one register, and it is .x, we can
skip the extra level of fanout indirection.
Signed-off-by: Rob Clark <[email protected]>
Diffstat (limited to 'src/gallium/drivers/freedreno/ir3')
| -rw-r--r-- | src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c b/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c index 3fd2e50d82f..1e883926386 100644 --- a/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c +++ b/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c @@ -747,6 +747,12 @@ split_dest(struct ir3_block *block, struct ir3_instruction **dst, struct ir3_instruction *src, unsigned base, unsigned n) { struct ir3_instruction *prev = NULL; + + if ((n == 1) && (src->regs[0]->wrmask == 0x1)) { + dst[0] = src; + return; + } + for (int i = 0, j = 0; i < n; i++) { struct ir3_instruction *split = ir3_instr_create(block, OPC_META_FO); ir3_reg_create(split, 0, IR3_REG_SSA); |