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intel/analyze_ubo_ranges: Use nir_src_is_const and friends 

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Jason Ekstrand 2018-10-20 12:21:46 -05:00
parent 1413512b4c
commit 52145070c0
1 changed files with 7 additions and 8 deletions
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15
src/intel/compiler/brw_nir_analyze_ubo_ranges.c
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@ -147,12 +147,11 @@ analyze_ubos_block(struct ubo_analysis_state *state, nir_block *block)
continue; /* Not a uniform or UBO intrinsic */
}
nir_const_value *block_const = nir_src_as_const_value(intrin->src[0]);
nir_const_value *offset_const = nir_src_as_const_value(intrin->src[1]);
if (block_const && offset_const) {
const int block = block_const->u32[0];
const int offset = offset_const->u32[0] / 32;
if (nir_src_is_const(intrin->src[0]) &&
nir_src_is_const(intrin->src[1])) {
const int block = nir_src_as_uint(intrin->src[0]);
const unsigned byte_offset = nir_src_as_uint(intrin->src[1]);
const int offset = byte_offset / 32;
/* Avoid shifting by larger than the width of our bitfield, as this
* is undefined in C. Even if we require multiple bits to represent
@ -166,8 +165,8 @@ analyze_ubos_block(struct ubo_analysis_state *state, nir_block *block)
/* The value might span multiple 32-byte chunks. */
const int bytes = nir_intrinsic_dest_components(intrin) *
(nir_dest_bit_size(intrin->dest) / 8);
const int start = ROUND_DOWN_TO(offset_const->u32[0], 32);
const int end = ALIGN(offset_const->u32[0] + bytes, 32);
const int start = ROUND_DOWN_TO(byte_offset, 32);
const int end = ALIGN(byte_offset + bytes, 32);
const int chunks = (end - start) / 32;
/* TODO: should we count uses in loops as higher benefit? */