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gallivm: Do the same codegen improvement for constant-index array loads.

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Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21084>
This commit is contained in:
Emma Anholt 2023-02-02 14:10:42 -08:00 • committed by Marge Bot
parent cf47154300
commit 907b0a01b7
1 changed files with 7 additions and 12 deletions
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19
src/gallium/auxiliary/gallivm/lp_bld_nir_soa.c
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@ -754,26 +754,21 @@ static LLVMValueRef emit_load_reg(struct lp_build_nir_context *bld_base,
int nc = reg->reg->num_components;
LLVMValueRef vals[NIR_MAX_VEC_COMPONENTS] = { NULL };
struct lp_build_context *uint_bld = &bld_base->uint_bld;
if (reg->reg->num_array_elems) {
if (reg->indirect) {
LLVMValueRef indirect_val = lp_build_const_int_vec(gallivm, uint_bld->type, reg->base_offset);
if (reg->indirect) {
LLVMValueRef max_index = lp_build_const_int_vec(gallivm, uint_bld->type, reg->reg->num_array_elems - 1);
indirect_val = LLVMBuildAdd(builder, indirect_val, indir_src, "");
indirect_val = lp_build_min(uint_bld, indirect_val, max_index);
}
LLVMValueRef max_index = lp_build_const_int_vec(gallivm, uint_bld->type, reg->reg->num_array_elems - 1);
indirect_val = LLVMBuildAdd(builder, indirect_val, indir_src, "");
indirect_val = lp_build_min(uint_bld, indirect_val, max_index);
reg_storage = LLVMBuildBitCast(builder, reg_storage, LLVMPointerType(reg_bld->elem_type, 0), "");
for (unsigned i = 0; i < nc; i++) {
LLVMValueRef indirect_offset = get_soa_array_offsets(uint_bld, indirect_val, nc, i, TRUE);
vals[i] = build_gather(bld_base, reg_bld, reg_bld->elem_type, reg_storage, indirect_offset, NULL, NULL);
}
} else {
LLVMTypeRef array_type = LLVMArrayType(reg_bld->vec_type, nc);
for (unsigned i = 0; i < nc; i++) {
LLVMValueRef index = lp_build_const_int32(gallivm, i);
LLVMValueRef this_storage =
nc == 1 ? reg_storage
: lp_build_array_get_ptr2(gallivm, array_type, reg_storage, index);
vals[i] = LLVMBuildLoad2(builder, reg_bld->vec_type, this_storage, "");
vals[i] = LLVMBuildLoad2(builder, reg_bld->vec_type,
reg_chan_pointer(bld_base, reg_bld, reg->reg, reg_storage,
reg->base_offset, i), "");
}
}
return nc == 1 ? vals[0] : lp_nir_array_build_gather_values(builder, vals, nc);