diff options
| author | Christian König <deathsimple@vodafone.de> | 2010-12-14 00:43:53 +0100 |
|---|---|---|
| committer | Christian König <deathsimple@vodafone.de> | 2011-01-12 19:31:36 +0100 |
| commit | 8813842121d46d1be476807c98b0ba0b771f0c91 (patch) | |
| tree | 35bde640f8de3fec2c3773587cc3df2ead3a664e /src/gallium/drivers/r600/r600_shader.c | |
| parent | 052b9e8fab2e7deddf7f287d63c45aa938e5ec67 (diff) | |
r600g: optimize away CF_INST_POP
If last instruction is an CF_INST_ALU we don't need to emit an
additional CF_INST_POP for stack clean up after an IF ELSE ENDIF.
Diffstat (limited to 'src/gallium/drivers/r600/r600_shader.c')
| -rw-r--r-- | src/gallium/drivers/r600/r600_shader.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c index 9248eb3357..0f7213f977 100644 --- a/src/gallium/drivers/r600/r600_shader.c +++ b/src/gallium/drivers/r600/r600_shader.c @@ -2703,9 +2703,25 @@ static int emit_logic_pred(struct r600_shader_ctx *ctx, int opcode) static int pops(struct r600_shader_ctx *ctx, int pops) { - r600_bc_add_cfinst(ctx->bc, CTX_INST(V_SQ_CF_WORD1_SQ_CF_INST_POP)); - ctx->bc->cf_last->pop_count = pops; - ctx->bc->cf_last->cf_addr = ctx->bc->cf_last->id + 2; + int alu_pop = 3; + if (ctx->bc->cf_last) { + if (ctx->bc->cf_last->inst == CTX_INST(V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU) << 3) + alu_pop = 0; + else if (ctx->bc->cf_last->inst == CTX_INST(V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_POP_AFTER) << 3) + alu_pop = 1; + } + alu_pop += pops; + if (alu_pop == 1) { + ctx->bc->cf_last->inst = CTX_INST(V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_POP_AFTER) << 3; + ctx->bc->force_add_cf = 1; + } else if (alu_pop == 2) { + ctx->bc->cf_last->inst = CTX_INST(V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_POP2_AFTER) << 3; + ctx->bc->force_add_cf = 1; + } else { + r600_bc_add_cfinst(ctx->bc, CTX_INST(V_SQ_CF_WORD1_SQ_CF_INST_POP)); + ctx->bc->cf_last->pop_count = pops; + ctx->bc->cf_last->cf_addr = ctx->bc->cf_last->id + 2; + } return 0; } |