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nir/opt_load_store_vectorize: delay aliasing test in try_vectorize_shared2()

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Checking for aliasing can be very expensive.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38659>
This commit is contained in:
Daniel Schürmann 2025-12-12 15:11:04 +01:00 • committed by Marge Bot
parent 598928d7e7
commit 89b9fcb5e7
1 changed files with 3 additions and 3 deletions
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6
src/compiler/nir/nir_opt_load_store_vectorize.c
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@ -1507,9 +1507,6 @@ try_vectorize_shared2(struct vectorize_ctx *ctx,
struct entry *low, struct entry *high,
struct entry *first, struct entry *second)
{
if (!can_vectorize(ctx, first, second) || first->deref)
return false;
unsigned low_bit_size = get_bit_size(low);
unsigned high_bit_size = get_bit_size(high);
unsigned low_size = low->num_components * low_bit_size / 8;
@ -1523,6 +1520,9 @@ try_vectorize_shared2(struct vectorize_ctx *ctx,
if (high->align_mul % low_size || high->align_offset % low_size)
return false;
if (!can_vectorize(ctx, first, second) || first->deref)
return false;
uint64_t diff = get_offset_diff(low, high);
bool st64 = diff % (64 * low_size) == 0;
unsigned stride = st64 ? 64 * low_size : low_size;