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nir/opt_algebraic: Fix return type of fdot(vec(a, 0.0, ...), b).

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The replace pattern was generating a vector when it should have been
scalar.  Fixes validation failures with the new algebraic unit tests.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39184>
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Emma Anholt 2025-12-23 11:25:17 -08:00 • committed by Marge Bot
parent 13cfd0176c
commit afece95101
1 changed files with 3 additions and 3 deletions
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6
src/compiler/nir/nir_opt_algebraic.py
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@ -528,7 +528,7 @@ optimizations.extend([
(('fdot2', a, 0.0), 0.0),
(('fdot4', ('vec4', a, b, c, 1.0), d), ('fdph', ('vec3', a, b, c), d), '!options->lower_fdph'),
(('fdot4', ('vec4', a, 0.0, 0.0, 0.0), b), ('fmul', a, b)),
(('fdot4', ('vec4', a, 0.0, 0.0, 0.0), b), ('fmul', a, 'b.x')),
(('fdot4', ('vec4', a, b, 0.0, 0.0), c), ('fdot2', ('vec2', a, b), c)),
(('fdot4', ('vec4', a, b, c, 0.0), d), ('fdot3', ('vec3', a, b, c), d)),
(('fdot4', 'a(w_is_zero)', b), ('fdot3', 'a.xyz', 'b.xyz')),
@ -536,13 +536,13 @@ optimizations.extend([
(('fdot4', 'a(y_is_zero)', b), ('fdot3', 'a.xzw', 'b.xzw')),
(('fdot4', 'a(x_is_zero)', b), ('fdot3', 'a.yzw', 'b.yzw')),
(('fdot3', ('vec3', a, 0.0, 0.0), b), ('fmul', a, b)),
(('fdot3', ('vec3', a, 0.0, 0.0), b), ('fmul', a, 'b.x')),
(('fdot3', ('vec3', a, b, 0.0), c), ('fdot2', ('vec2', a, b), c)),
(('fdot3', 'a(x_is_zero)', b), ('fdot2', 'a.yz', 'b.yz')),
(('fdot3', 'a(y_is_zero)', b), ('fdot2', 'a.xz', 'b.xz')),
(('fdot3', 'a(z_is_zero)', b), ('fdot2', 'a.xy', 'b.xy')),
(('fdot2', ('vec2', a, 0.0), b), ('fmul', a, b)),
(('fdot2', ('vec2', a, 0.0), b), ('fmul', a, 'b.x')),
(('fdot2', 'a(x_is_zero)', b), ('fmul', 'a.y', 'b.y')),
(('fdot2', 'a(y_is_zero)', b), ('fmul', 'a.x', 'b.x')),
(('fdot2', a, 1.0), ('fadd', 'a.x', 'a.y')),