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nir/uub: properly limit float support to 32bit

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Cc: mesa-stable

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
(cherry picked from commit 0b366a7ab2)

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32730>
This commit is contained in:
Georg Lehmann
2024-12-09 22:57:58 +01:00
committed by Dylan Baker
parent 0f1abde4cc
commit 17da2666c7
2 changed files with 9 additions and 4 deletions
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2
.pick_status.json
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@@ -824,7 +824,7 @@
"description": "nir/uub: properly limit float support to 32bit",
"nominated": true,
"nomination_type": 1,
"resolution": 0,
"resolution": 1,
"main_sha": null,
"because_sha": null,
"notes": null

11
src/compiler/nir/nir_range_analysis.c
View File

@@ -1720,8 +1720,6 @@ get_alu_uub(struct analysis_state *state, struct uub_query q, uint32_t *result,
case nir_op_b32csel:
case nir_op_ubfe:
case nir_op_bfm:
case nir_op_fmul:
case nir_op_fmulz:
case nir_op_extract_u8:
case nir_op_extract_i8:
case nir_op_extract_u16:
@@ -1734,12 +1732,19 @@ get_alu_uub(struct analysis_state *state, struct uub_query q, uint32_t *result,
case nir_op_u2u8:
case nir_op_u2u16:
case nir_op_u2u32:
case nir_op_f2u32:
if (nir_scalar_chase_alu_src(q.scalar, 0).def->bit_size > 32) {
/* If src is >32 bits, return max */
return;
}
break;
case nir_op_fmul:
case nir_op_fmulz:
case nir_op_f2u32:
if (nir_scalar_chase_alu_src(q.scalar, 0).def->bit_size != 32) {
/* Only 32bit floats support for now, return max */
return;
}
break;
default:
return;
}