From 1ff9e27cbdd1fe770f18e5316c6f32a867e39095 Mon Sep 17 00:00:00 2001 From: Marek Olšák Date: Wed, 4 Oct 2017 04:51:39 +0200 Subject: ac: replace ac_build_kill with ac_build_kill_if_false MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This will be a new LLVM intrinsic and will also work nicely with llvm.amdgcn.wqm.vote. Reviewed-by: Nicolai Hähnle --- src/gallium/drivers/radeonsi/si_shader.c | 48 +++++++++++------------ src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c | 42 ++++++++------------ 2 files changed, 38 insertions(+), 52 deletions(-) (limited to 'src/gallium/drivers/radeonsi') diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c index c3fe13deeaa..8abacac8c8d 100644 --- a/src/gallium/drivers/radeonsi/si_shader.c +++ b/src/gallium/drivers/radeonsi/si_shader.c @@ -2272,22 +2272,24 @@ static void si_alpha_test(struct lp_build_tgsi_context *bld_base, struct si_shader_context *ctx = si_shader_context(bld_base); if (ctx->shader->key.part.ps.epilog.alpha_func != PIPE_FUNC_NEVER) { + static LLVMRealPredicate cond_map[PIPE_FUNC_ALWAYS + 1] = { + [PIPE_FUNC_LESS] = LLVMRealOLT, + [PIPE_FUNC_EQUAL] = LLVMRealOEQ, + [PIPE_FUNC_LEQUAL] = LLVMRealOLE, + [PIPE_FUNC_GREATER] = LLVMRealOGT, + [PIPE_FUNC_NOTEQUAL] = LLVMRealONE, + [PIPE_FUNC_GEQUAL] = LLVMRealOGE, + }; + LLVMRealPredicate cond = cond_map[ctx->shader->key.part.ps.epilog.alpha_func]; + assert(cond); + LLVMValueRef alpha_ref = LLVMGetParam(ctx->main_fn, SI_PARAM_ALPHA_REF); - LLVMValueRef alpha_pass = - lp_build_cmp(&bld_base->base, - ctx->shader->key.part.ps.epilog.alpha_func, - alpha, alpha_ref); - LLVMValueRef arg = - lp_build_select(&bld_base->base, - alpha_pass, - LLVMConstReal(ctx->f32, 1.0f), - LLVMConstReal(ctx->f32, -1.0f)); - - ac_build_kill(&ctx->ac, arg); + LLVMBuildFCmp(ctx->ac.builder, cond, alpha, alpha_ref, ""); + ac_build_kill_if_false(&ctx->ac, alpha_pass); } else { - ac_build_kill(&ctx->ac, NULL); + ac_build_kill_if_false(&ctx->ac, LLVMConstInt(ctx->i1, 0, 0)); } } @@ -3573,7 +3575,7 @@ static void si_llvm_return_fs_outputs(struct ac_shader_abi *abi, LLVMValueRef ret; if (ctx->postponed_kill) - ac_build_kill(&ctx->ac, LLVMBuildLoad(builder, ctx->postponed_kill, "")); + ac_build_kill_if_false(&ctx->ac, LLVMBuildLoad(builder, ctx->postponed_kill, "")); /* Read the output values. */ for (i = 0; i < info->num_outputs; i++) { @@ -4056,7 +4058,7 @@ static void si_llvm_emit_vertex( LLVMValueRef soffset = LLVMGetParam(ctx->main_fn, ctx->param_gs2vs_offset); LLVMValueRef gs_next_vertex; - LLVMValueRef can_emit, kill; + LLVMValueRef can_emit; unsigned chan, offset; int i; unsigned stream; @@ -4082,11 +4084,7 @@ static void si_llvm_emit_vertex( bool use_kill = !info->writes_memory; if (use_kill) { - kill = lp_build_select(&bld_base->base, can_emit, - LLVMConstReal(ctx->f32, 1.0f), - LLVMConstReal(ctx->f32, -1.0f)); - - ac_build_kill(&ctx->ac, kill); + ac_build_kill_if_false(&ctx->ac, can_emit); } else { lp_build_if(&if_state, &ctx->gallivm, can_emit); } @@ -4881,11 +4879,7 @@ static void si_llvm_emit_polygon_stipple(struct si_shader_context *ctx, row = ac_to_integer(&ctx->ac, row); bit = LLVMBuildLShr(builder, row, address[0], ""); bit = LLVMBuildTrunc(builder, bit, ctx->i1, ""); - - /* The intrinsic kills the thread if arg < 0. */ - bit = LLVMBuildSelect(builder, bit, LLVMConstReal(ctx->f32, 0), - LLVMConstReal(ctx->f32, -1), ""); - ac_build_kill(&ctx->ac, bit); + ac_build_kill_if_false(&ctx->ac, bit); } void si_shader_binary_read_config(struct ac_shader_binary *binary, @@ -5854,8 +5848,10 @@ static bool si_compile_tgsi_main(struct si_shader_context *ctx, if (ctx->type == PIPE_SHADER_FRAGMENT && sel->info.uses_kill && ctx->screen->b.debug_flags & DBG(FS_CORRECT_DERIVS_AFTER_KILL)) { - /* This is initialized to 0.0 = not kill. */ - ctx->postponed_kill = lp_build_alloca(&ctx->gallivm, ctx->f32, ""); + ctx->postponed_kill = lp_build_alloca_undef(&ctx->gallivm, ctx->i1, ""); + /* true = don't kill. */ + LLVMBuildStore(ctx->ac.builder, LLVMConstInt(ctx->i1, 1, 0), + ctx->postponed_kill); } if (sel->tokens) { diff --git a/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c b/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c index fc705c376e5..ad7a42f7b84 100644 --- a/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c +++ b/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c @@ -39,20 +39,18 @@ static void kill_if_fetch_args(struct lp_build_tgsi_context *bld_base, for (i = 0; i < TGSI_NUM_CHANNELS; i++) { LLVMValueRef value = lp_build_emit_fetch(bld_base, inst, 0, i); - conds[i] = LLVMBuildFCmp(builder, LLVMRealOLT, value, + conds[i] = LLVMBuildFCmp(builder, LLVMRealOGE, value, ctx->ac.f32_0, ""); } - /* Or the conditions together */ + /* And the conditions together */ for (i = TGSI_NUM_CHANNELS - 1; i > 0; i--) { - conds[i - 1] = LLVMBuildOr(builder, conds[i], conds[i - 1], ""); + conds[i - 1] = LLVMBuildAnd(builder, conds[i], conds[i - 1], ""); } emit_data->dst_type = ctx->voidt; emit_data->arg_count = 1; - emit_data->args[0] = LLVMBuildSelect(builder, conds[0], - LLVMConstReal(ctx->f32, -1.0f), - ctx->ac.f32_0, ""); + emit_data->args[0] = conds[0]; } static void kil_emit(const struct lp_build_tgsi_action *action, @@ -61,31 +59,23 @@ static void kil_emit(const struct lp_build_tgsi_action *action, { struct si_shader_context *ctx = si_shader_context(bld_base); LLVMBuilderRef builder = ctx->ac.builder; + LLVMValueRef visible; + + if (emit_data->inst->Instruction.Opcode == TGSI_OPCODE_KILL_IF) { + visible = emit_data->args[0]; + } else { + assert(emit_data->inst->Instruction.Opcode == TGSI_OPCODE_KILL); + visible = LLVMConstInt(ctx->i1, false, 0); + } if (ctx->postponed_kill) { - if (emit_data->inst->Instruction.Opcode == TGSI_OPCODE_KILL_IF) { - LLVMValueRef val; - - /* Take the minimum kill value. This is the same as OR - * between 2 kill values. If the value is negative, - * the pixel will be killed. - */ - val = LLVMBuildLoad(builder, ctx->postponed_kill, ""); - val = lp_build_emit_llvm_binary(bld_base, TGSI_OPCODE_MIN, - val, emit_data->args[0]); - LLVMBuildStore(builder, val, ctx->postponed_kill); - } else { - LLVMBuildStore(builder, - LLVMConstReal(ctx->f32, -1), - ctx->postponed_kill); - } + LLVMValueRef mask = LLVMBuildLoad(builder, ctx->postponed_kill, ""); + mask = LLVMBuildAnd(builder, mask, visible, ""); + LLVMBuildStore(builder, mask, ctx->postponed_kill); return; } - if (emit_data->inst->Instruction.Opcode == TGSI_OPCODE_KILL_IF) - ac_build_kill(&ctx->ac, emit_data->args[0]); - else - ac_build_kill(&ctx->ac, NULL); + ac_build_kill_if_false(&ctx->ac, visible); } static void emit_icmp(const struct lp_build_tgsi_action *action, -- cgit v1.2.3