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ac/nir: add always_vector argument to ac_build_gather_values_extended

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This simplifies a bunch of places that no longer need special treatment
of value_count == 1. We rely on LLVM to optimize away the 1-element vector
types.

This fixes a bunch of bugs where 1-element arrays are indexed indirectly.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Nicolai Hähnle
2017-06-25 13:04:51 +02:00
parent e247357240
commit ac2ab5acad
3 changed files with 13 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
src/amd/common/ac_llvm_build.c
View File

@@ -181,13 +181,14 @@ ac_build_gather_values_extended(struct ac_llvm_context *ctx,
LLVMValueRef *values,
unsigned value_count,
unsigned value_stride,
bool load)
bool load,
bool always_vector)
{
LLVMBuilderRef builder = ctx->builder;
LLVMValueRef vec = NULL;
unsigned i;
if (value_count == 1) {
if (value_count == 1 && !always_vector) {
if (load)
return LLVMBuildLoad(builder, values[0], "");
return values[0];
@@ -212,7 +213,7 @@ ac_build_gather_values(struct ac_llvm_context *ctx,
LLVMValueRef *values,
unsigned value_count)
{
return ac_build_gather_values_extended(ctx, values, value_count, 1, false);
return ac_build_gather_values_extended(ctx, values, value_count, 1, false, false);
}
LLVMValueRef

3
src/amd/common/ac_llvm_build.h
View File

@@ -78,7 +78,8 @@ ac_build_gather_values_extended(struct ac_llvm_context *ctx,
LLVMValueRef *values,
unsigned value_count,
unsigned value_stride,
bool load);
bool load,
bool always_vector);
LLVMValueRef
ac_build_gather_values(struct ac_llvm_context *ctx,
LLVMValueRef *values,

18
src/amd/common/ac_nir_to_llvm.c
View File

@@ -1017,11 +1017,6 @@ build_store_values_extended(struct ac_llvm_context *ac,
LLVMBuilderRef builder = ac->builder;
unsigned i;
if (value_count == 1) {
LLVMBuildStore(builder, vec, values[0]);
return;
}
for (i = 0; i < value_count; i++) {
LLVMValueRef ptr = values[i * value_stride];
LLVMValueRef index = LLVMConstInt(ac->i32, i, false);
@@ -2986,7 +2981,7 @@ static LLVMValueRef visit_load_var(struct ac_nir_context *ctx,
count -= chan / 4;
LLVMValueRef tmp_vec = ac_build_gather_values_extended(
&ctx->ac, ctx->abi->inputs + idx + chan, count,
4, false);
4, false, true);
values[chan] = LLVMBuildExtractElement(ctx->ac.builder,
tmp_vec,
@@ -3003,7 +2998,7 @@ static LLVMValueRef visit_load_var(struct ac_nir_context *ctx,
count -= chan / 4;
LLVMValueRef tmp_vec = ac_build_gather_values_extended(
&ctx->ac, ctx->locals + idx + chan, count,
4, true);
4, true, true);
values[chan] = LLVMBuildExtractElement(ctx->ac.builder,
tmp_vec,
@@ -3031,7 +3026,7 @@ static LLVMValueRef visit_load_var(struct ac_nir_context *ctx,
count -= chan / 4;
LLVMValueRef tmp_vec = ac_build_gather_values_extended(
&ctx->ac, ctx->outputs + idx + chan, count,
4, true);
4, true, true);
values[chan] = LLVMBuildExtractElement(ctx->ac.builder,
tmp_vec,
@@ -3100,13 +3095,10 @@ visit_store_var(struct ac_nir_context *ctx,
count -= chan / 4;
LLVMValueRef tmp_vec = ac_build_gather_values_extended(
&ctx->ac, ctx->outputs + idx + chan, count,
stride, true);
stride, true, true);
if (get_llvm_num_components(tmp_vec) > 1) {
tmp_vec = LLVMBuildInsertElement(ctx->ac.builder, tmp_vec,
value, indir_index, "");
} else
tmp_vec = value;
build_store_values_extended(&ctx->ac, ctx->outputs + idx + chan,
count, stride, tmp_vec);
@@ -3129,7 +3121,7 @@ visit_store_var(struct ac_nir_context *ctx,
count -= chan / 4;
LLVMValueRef tmp_vec = ac_build_gather_values_extended(
&ctx->ac, ctx->locals + idx + chan, count,
4, true);
4, true, true);
tmp_vec = LLVMBuildInsertElement(ctx->ac.builder, tmp_vec,
value, indir_index, "");