From 6efe557718de0fad44be9b432e1b77465211ac52 Mon Sep 17 00:00:00 2001
From: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Date: Tue, 24 Jun 2025 13:25:15 -0400
Subject: [PATCH] nir/search_helpers: add has_multiple_uses helper

heuristic for the next patch.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Mel Henning <mhenning@darkrefraction.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35720>
---
 src/compiler/nir/nir_search_helpers.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/compiler/nir/nir_search_helpers.h b/src/compiler/nir/nir_search_helpers.h
index 89a1642e0f0..9ad466b6c4b 100644
--- a/src/compiler/nir/nir_search_helpers.h
+++ b/src/compiler/nir/nir_search_helpers.h
@@ -498,6 +498,15 @@ is_not_const_and_not_fsign(struct hash_table *ht, const nir_alu_instr *instr,
           !is_fsign(instr, src, num_components, swizzle);
 }
 
+static inline bool
+has_multiple_uses(struct hash_table *ht, const nir_alu_instr *instr,
+                  unsigned src, unsigned num_components,
+                  const uint8_t *swizzle)
+{
+   return !list_is_empty(&instr->def.uses) &&
+          !list_is_singular(&instr->def.uses);
+}
+
 static inline bool
 is_used_once(const nir_alu_instr *instr)
 {