[llvm] [AMDGPU] Avoid repeated hash lookups (NFC) (PR #109506)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/109506

None

>From fc32a6ffdc47fd1064ac72c900459ef4f373e889 Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Fri, 20 Sep 2024 13:36:12 -0700
Subject: [PATCH] [AMDGPU] Avoid repeated hash lookups (NFC)

---
 llvm/lib/Target/AMDGPU/AMDGPULateCodeGenPrepare.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/llvm/lib/Target/AMDGPU/AMDGPULateCodeGenPrepare.cpp b/llvm/lib/Target/AMDGPU/AMDGPULateCodeGenPrepare.cpp
index 36dfebacaed686..3767a6b379f81c 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPULateCodeGenPrepare.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPULateCodeGenPrepare.cpp
@@ -296,9 +296,8 @@ bool LiveRegOptimizer::optimizeLiveType(
       // Collect all uses of PHINodes and any use the crosses BB boundaries.
       if (UseInst->getParent() != II->getParent() || isa<PHINode>(II)) {
         Uses.insert(UseInst);
-        if (!Defs.count(II) && !isa<PHINode>(II)) {
+        if (!isa<PHINode>(II))
           Defs.insert(II);
-        }
       }
     }
   }