diff options
Diffstat (limited to 'src/gallium/drivers/nvc0/nvc0_pc_optimize.c')
| -rw-r--r-- | src/gallium/drivers/nvc0/nvc0_pc_optimize.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/gallium/drivers/nvc0/nvc0_pc_optimize.c b/src/gallium/drivers/nvc0/nvc0_pc_optimize.c index e4449c285b5..8dce32b40c3 100644 --- a/src/gallium/drivers/nvc0/nvc0_pc_optimize.c +++ b/src/gallium/drivers/nvc0/nvc0_pc_optimize.c @@ -1101,6 +1101,40 @@ nv_pass_cse(struct nv_pass *ctx, struct nv_basic_block *b) return 0; } +/* Make sure all sources of an NV_OP_BIND are distinct, they need to occupy + * neighbouring registers. CSE might have messed this up. + */ +static int +nv_pass_fix_bind(struct nv_pass *ctx, struct nv_basic_block *b) +{ + struct nv_value *val; + struct nv_instruction *bnd, *nvi, *next; + int s, t; + + for (bnd = b->entry; bnd; bnd = next) { + next = bnd->next; + if (bnd->opcode != NV_OP_BIND) + continue; + for (s = 0; s < 4 && bnd->src[s]; ++s) { + val = bnd->src[s]->value; + for (t = s + 1; t < 4 && bnd->src[t]; ++t) { + if (bnd->src[t]->value != val) + continue; + nvi = nv_alloc_instruction(ctx->pc, NV_OP_MOV); + nvi->def[0] = new_value_like(ctx->pc, val); + nvi->def[0]->insn = nvi; + nv_reference(ctx->pc, nvi, 0, val); + nvc0_insn_insert_before(bnd, nvi); + + nv_reference(ctx->pc, bnd, t, nvi->def[0]); + } + } + } + DESCEND_ARBITRARY(t, nv_pass_fix_bind); + + return 0; +} + static int nv_pc_pass0(struct nv_pc *pc, struct nv_basic_block *root) { @@ -1177,6 +1211,9 @@ nv_pc_pass0(struct nv_pc *pc, struct nv_basic_block *root) if (ret) return ret; + pc->pass_seq++; + ret = nv_pass_fix_bind(&pass, root); + return ret; } |