From 0e679e80a96ce916b9c2e0da993878ce512c9621 Mon Sep 17 00:00:00 2001
From: Konstantin Seurer <konstantin.seurer@gmail.com>
Date: Sun, 7 May 2023 11:53:21 +0200
Subject: [PATCH] nir/lower_io: Emit less iadd(x, 0)

Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Reviewed-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22890>
---
 src/compiler/nir/nir_lower_io.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/compiler/nir/nir_lower_io.c b/src/compiler/nir/nir_lower_io.c
index ec8b6bf..2838807 100644
--- a/src/compiler/nir/nir_lower_io.c
+++ b/src/compiler/nir/nir_lower_io.c
@@ -908,6 +908,9 @@ build_addr_iadd_imm(nir_builder *b, nir_ssa_def *addr,
                     nir_variable_mode modes,
                     int64_t offset)
 {
+   if (!offset)
+      return addr;
+
    return build_addr_iadd(b, addr, addr_format, modes,
                              nir_imm_intN_t(b, offset,
                                             addr_get_offset_bit_size(addr, addr_format)));
-- 
2.7.4