From 873fe637e20d6a7bf63dfcb456cd4aceaa373915 Mon Sep 17 00:00:00 2001
From: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Date: Tue, 16 Jan 2024 13:00:13 +0200
Subject: [PATCH] nir/alu_srcs_negative_equal: bail earlier if possible

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Sviatoslav Peleshko <sviatoslav.peleshko@globallogic.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27087>
---
 src/compiler/nir/nir_instr_set.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/compiler/nir/nir_instr_set.c b/src/compiler/nir/nir_instr_set.c
index 638343a0afc..14ab6c92ffc 100644
--- a/src/compiler/nir/nir_instr_set.c
+++ b/src/compiler/nir/nir_instr_set.c
@@ -455,13 +455,17 @@ nir_alu_srcs_negative_equal(const nir_alu_instr *alu1,
          alu2_swizzle[i] = i;
    }
 
+   /* Bail early if sources are not equal or we don't have parity. */
+   if (!parity || !nir_srcs_equal(alu1_actual_src, alu2_actual_src))
+      return false;
+
    for (unsigned i = 0; i < nir_ssa_alu_instr_src_components(alu1, src1); i++) {
       if (alu1_swizzle[alu1->src[src1].swizzle[i]] !=
           alu2_swizzle[alu2->src[src2].swizzle[i]])
          return false;
    }
 
-   return parity && nir_srcs_equal(alu1_actual_src, alu2_actual_src);
+   return true;
 }
 
 bool