From 99cdc019bf6fe11c135b7544ef6daf4ac964fa24 Mon Sep 17 00:00:00 2001 From: Timothy Arceri Date: Wed, 7 Mar 2018 11:10:54 +1100 Subject: [PATCH] ac: make use of if/loop build helpers MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit These helpers insert the basic block in the same order as they appear in NIR making it easier to follow LLVM IR dumps. The helpers also insert more useful labels onto the blocks. TGSI use the line number of the corresponding opcode in the TGSI dump as the label id, here we use the corresponding block index from NIR. Reviewed-by: Marek Olšák --- src/amd/common/ac_nir_to_llvm.c | 60 ++++++++++----------------------- 1 file changed, 18 insertions(+), 42 deletions(-) diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c index 9a3ce94af7c..29bffefd79e 100644 --- a/src/amd/common/ac_nir_to_llvm.c +++ b/src/amd/common/ac_nir_to_llvm.c @@ -5300,17 +5300,15 @@ static void visit_ssa_undef(struct ac_nir_context *ctx, _mesa_hash_table_insert(ctx->defs, &instr->def, undef); } -static void visit_jump(struct ac_nir_context *ctx, +static void visit_jump(struct ac_llvm_context *ctx, const nir_jump_instr *instr) { switch (instr->type) { case nir_jump_break: - LLVMBuildBr(ctx->ac.builder, ctx->break_block); - LLVMClearInsertionPosition(ctx->ac.builder); + ac_build_break(ctx); break; case nir_jump_continue: - LLVMBuildBr(ctx->ac.builder, ctx->continue_block); - LLVMClearInsertionPosition(ctx->ac.builder); + ac_build_continue(ctx); break; default: fprintf(stderr, "Unknown NIR jump instr: "); @@ -5348,7 +5346,7 @@ static void visit_block(struct ac_nir_context *ctx, nir_block *block) visit_ssa_undef(ctx, nir_instr_as_ssa_undef(instr)); break; case nir_instr_type_jump: - visit_jump(ctx, nir_instr_as_jump(instr)); + visit_jump(&ctx->ac, nir_instr_as_jump(instr)); break; default: fprintf(stderr, "Unknown NIR instr type: "); @@ -5365,56 +5363,34 @@ static void visit_if(struct ac_nir_context *ctx, nir_if *if_stmt) { LLVMValueRef value = get_src(ctx, if_stmt->condition); - LLVMValueRef fn = LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx->ac.builder)); - LLVMBasicBlockRef merge_block = - LLVMAppendBasicBlockInContext(ctx->ac.context, fn, ""); - LLVMBasicBlockRef if_block = - LLVMAppendBasicBlockInContext(ctx->ac.context, fn, ""); - LLVMBasicBlockRef else_block = merge_block; - if (!exec_list_is_empty(&if_stmt->else_list)) - else_block = LLVMAppendBasicBlockInContext( - ctx->ac.context, fn, ""); - - LLVMValueRef cond = LLVMBuildICmp(ctx->ac.builder, LLVMIntNE, value, - ctx->ac.i32_0, ""); - LLVMBuildCondBr(ctx->ac.builder, cond, if_block, else_block); - - LLVMPositionBuilderAtEnd(ctx->ac.builder, if_block); + nir_block *then_block = + (nir_block *) exec_list_get_head(&if_stmt->then_list); + + ac_build_uif(&ctx->ac, value, then_block->index); + visit_cf_list(ctx, &if_stmt->then_list); - if (LLVMGetInsertBlock(ctx->ac.builder)) - LLVMBuildBr(ctx->ac.builder, merge_block); if (!exec_list_is_empty(&if_stmt->else_list)) { - LLVMPositionBuilderAtEnd(ctx->ac.builder, else_block); + nir_block *else_block = + (nir_block *) exec_list_get_head(&if_stmt->else_list); + + ac_build_else(&ctx->ac, else_block->index); visit_cf_list(ctx, &if_stmt->else_list); - if (LLVMGetInsertBlock(ctx->ac.builder)) - LLVMBuildBr(ctx->ac.builder, merge_block); } - LLVMPositionBuilderAtEnd(ctx->ac.builder, merge_block); + ac_build_endif(&ctx->ac, then_block->index); } static void visit_loop(struct ac_nir_context *ctx, nir_loop *loop) { - LLVMValueRef fn = LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx->ac.builder)); - LLVMBasicBlockRef continue_parent = ctx->continue_block; - LLVMBasicBlockRef break_parent = ctx->break_block; + nir_block *first_loop_block = + (nir_block *) exec_list_get_head(&loop->body); - ctx->continue_block = - LLVMAppendBasicBlockInContext(ctx->ac.context, fn, ""); - ctx->break_block = - LLVMAppendBasicBlockInContext(ctx->ac.context, fn, ""); + ac_build_bgnloop(&ctx->ac, first_loop_block->index); - LLVMBuildBr(ctx->ac.builder, ctx->continue_block); - LLVMPositionBuilderAtEnd(ctx->ac.builder, ctx->continue_block); visit_cf_list(ctx, &loop->body); - if (LLVMGetInsertBlock(ctx->ac.builder)) - LLVMBuildBr(ctx->ac.builder, ctx->continue_block); - LLVMPositionBuilderAtEnd(ctx->ac.builder, ctx->break_block); - - ctx->continue_block = continue_parent; - ctx->break_block = break_parent; + ac_build_endloop(&ctx->ac, first_loop_block->index); } static void visit_cf_list(struct ac_nir_context *ctx, -- 2.30.2