From 548d919bd32ca14ade8911ef0a3992104dfb96e8 Mon Sep 17 00:00:00 2001
From: Karol Herbst <kherbst@redhat.com>
Date: Tue, 23 Jan 2024 17:02:35 +0100
Subject: [PATCH] nak: simplify phi_dsts

clippy complained that nothing was actually looping here. Luckily we can
simplify the code.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27216>
---
 src/nouveau/compiler/nak/ir.rs | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/src/nouveau/compiler/nak/ir.rs b/src/nouveau/compiler/nak/ir.rs
index f5acf092f08..7ff57976f07 100644
--- a/src/nouveau/compiler/nak/ir.rs
+++ b/src/nouveau/compiler/nak/ir.rs
@@ -5488,22 +5488,16 @@ impl BasicBlock {
     }
 
     pub fn phi_dsts(&self) -> Option<&OpPhiDsts> {
-        for instr in self.instrs.iter() {
-            match &instr.op {
-                Op::PhiDsts(phi) => return Some(phi),
-                _ => break,
-            }
+        if let Op::PhiDsts(phi) = &self.instrs.first()?.op {
+            return Some(phi);
         }
         None
     }
 
     #[allow(dead_code)]
     pub fn phi_dsts_mut(&mut self) -> Option<&mut OpPhiDsts> {
-        for instr in self.instrs.iter_mut() {
-            match &mut instr.op {
-                Op::PhiDsts(phi) => return Some(phi),
-                _ => break,
-            }
+        if let Op::PhiDsts(phi) = &mut self.instrs.first_mut()?.op {
+            return Some(phi);
         }
         None
     }