From d92e97d8848dd96fd8e5b93e62edbf7b5f509efc Mon Sep 17 00:00:00 2001 From: Christian König Date: Tue, 14 Dec 2010 00:43:53 +0100 Subject: 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. --- src/gallium/drivers/r600/r600_asm.c | 8 ++++++++ src/gallium/drivers/r600/r600_shader.c | 22 +++++++++++++++++++--- 2 files changed, 27 insertions(+), 3 deletions(-) (limited to 'src/gallium/drivers/r600') diff --git a/src/gallium/drivers/r600/r600_asm.c b/src/gallium/drivers/r600/r600_asm.c index 1f41269534a..4476f432b98 100644 --- a/src/gallium/drivers/r600/r600_asm.c +++ b/src/gallium/drivers/r600/r600_asm.c @@ -507,6 +507,8 @@ int r600_bc_add_literal(struct r600_bc *bc, const u32 *value) } /* same on EG */ if (((bc->cf_last->inst != (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU << 3)) && + (bc->cf_last->inst != (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_POP_AFTER << 3)) && + (bc->cf_last->inst != (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_POP2_AFTER << 3)) && (bc->cf_last->inst != (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_PUSH_BEFORE << 3))) || LIST_IS_EMPTY(&bc->cf_last->alu)) { R600_ERR("last CF is not ALU (%p)\n", bc->cf_last); @@ -728,6 +730,8 @@ static int r600_bc_cf_build(struct r600_bc *bc, struct r600_bc_cf *cf) switch (cf->inst) { case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU << 3): + case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_POP_AFTER << 3): + case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_POP2_AFTER << 3): case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_PUSH_BEFORE << 3): bc->bytecode[id++] = S_SQ_CF_ALU_WORD0_ADDR(cf->addr >> 1) | S_SQ_CF_ALU_WORD0_KCACHE_MODE0(cf->kcache0_mode) | @@ -808,6 +812,8 @@ int r600_bc_build(struct r600_bc *bc) LIST_FOR_EACH_ENTRY(cf, &bc->cf, list) { switch (cf->inst) { case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU << 3): + case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_POP_AFTER << 3): + case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_POP2_AFTER << 3): case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_PUSH_BEFORE << 3): break; case V_SQ_CF_WORD1_SQ_CF_INST_TEX: @@ -854,6 +860,8 @@ int r600_bc_build(struct r600_bc *bc) return r; switch (cf->inst) { case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU << 3): + case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_POP_AFTER << 3): + case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_POP2_AFTER << 3): case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_PUSH_BEFORE << 3): LIST_FOR_EACH_ENTRY(alu, &cf->alu, list) { switch(bc->chiprev) { diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c index 6cf23535515..aaebd16a310 100644 --- a/src/gallium/drivers/r600/r600_shader.c +++ b/src/gallium/drivers/r600/r600_shader.c @@ -2676,9 +2676,25 @@ 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; } -- cgit v1.2.3