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llvmpipe: do the all-in test on the scalar c0 instead of vector c0

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This still isn't faster, but committing it for posterity.
This commit is contained in:
Brian Paul 2010-01-11 12:59:36 -07:00
parent 86f450060d
commit 46b5bd6cad
1 changed files with 21 additions and 24 deletions
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45
src/gallium/drivers/llvmpipe/lp_state_fs.c
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@ -217,10 +217,7 @@ generate_tri_edge_mask(LLVMBuilderRef builder,
struct lp_build_if_state ifctx;
struct lp_type i32_type;
LLVMTypeRef i32vec4_type, mask_type;
LLVMValueRef c0_vec, c1_vec, c2_vec;
LLVMValueRef int_min_vec;
LLVMValueRef not_draw_all;
LLVMValueRef in_out_mask;
@ -238,21 +235,6 @@ generate_tri_edge_mask(LLVMBuilderRef builder,
mask_type = LLVMIntType(32 * 4);
/* int_min_vec = {INT_MIN, INT_MIN, INT_MIN, INT_MIN} */
int_min_vec = lp_build_int_const_scalar(i32_type, INT_MIN);
/* c0_vec = {c0, c0, c0, c0}
* Note that we emit this code four times but LLVM optimizes away
* three instances of it.
*/
c0_vec = lp_build_broadcast(builder, i32vec4_type, c0);
c1_vec = lp_build_broadcast(builder, i32vec4_type, c1);
c2_vec = lp_build_broadcast(builder, i32vec4_type, c2);
lp_build_name(c0_vec, "edgeconst0vec");
lp_build_name(c1_vec, "edgeconst1vec");
lp_build_name(c2_vec, "edgeconst2vec");
/*
* Use a conditional here to do detailed pixel in/out testing.
* We only have to do this if c0 != {INT_MIN, INT_MIN, INT_MIN, INT_MIN}
@ -260,17 +242,19 @@ generate_tri_edge_mask(LLVMBuilderRef builder,
flow = lp_build_flow_create(builder);
lp_build_flow_scope_begin(flow);
#define OPTIMIZE_IN_OUT_TEST 0
{
#define OPTIMIZE_IN_OUT_TEST 1
#if OPTIMIZE_IN_OUT_TEST
in_out_mask = lp_build_compare(builder, i32_type, PIPE_FUNC_EQUAL, c0_vec, int_min_vec);
lp_build_name(in_out_mask, "inoutmaskvec");
not_draw_all = LLVMBuildICmp(builder,
LLVMIntEQ,
LLVMBuildBitCast(builder, in_out_mask, mask_type, ""),
LLVMConstNull(mask_type),
LLVMIntNE,
c0,
LLVMConstInt(LLVMInt32Type(), INT_MIN, 0),
"");
in_out_mask = lp_build_int_const_scalar(i32_type, ~0);
lp_build_flow_scope_declare(flow, &in_out_mask);
lp_build_if(&ifctx, flow, builder, not_draw_all);
@ -280,6 +264,18 @@ generate_tri_edge_mask(LLVMBuilderRef builder,
LLVMValueRef m0_vec, m1_vec, m2_vec;
LLVMValueRef index, m;
/* c0_vec = {c0, c0, c0, c0}
* Note that we emit this code four times but LLVM optimizes away
* three instances of it.
*/
c0_vec = lp_build_broadcast(builder, i32vec4_type, c0);
c1_vec = lp_build_broadcast(builder, i32vec4_type, c1);
c2_vec = lp_build_broadcast(builder, i32vec4_type, c2);
lp_build_name(c0_vec, "edgeconst0vec");
lp_build_name(c1_vec, "edgeconst1vec");
lp_build_name(c2_vec, "edgeconst2vec");
index = LLVMConstInt(LLVMInt32Type(), i, 0);
step0_vec = LLVMBuildLoad(builder, LLVMBuildGEP(builder, step0_ptr, &index, 1, ""), "");
step1_vec = LLVMBuildLoad(builder, LLVMBuildGEP(builder, step1_ptr, &index, 1, ""), "");
@ -305,6 +301,7 @@ generate_tri_edge_mask(LLVMBuilderRef builder,
lp_build_endif(&ifctx);
#endif
}
lp_build_flow_scope_end(flow);
lp_build_flow_destroy(flow);