[llvm] [GVN][NFC] Use early return in phiTranslateImpl() (PR #149268)

[Madhur Amilkanthwar via llvm-commits]

https://github.com/madhur13490 created https://github.com/llvm/llvm-project/pull/149268

None

>From f5952a1d5bc5c3ceefa26690b95fd967e6eb7c54 Mon Sep 17 00:00:00 2001
From: Madhur Amilkanthwar <madhura at nvidia.com>
Date: Wed, 16 Jul 2025 08:26:38 -0700
Subject: [PATCH] [GVN][NFC] Use early return in phiTranslateImpl()

---
 llvm/lib/Transforms/Scalar/GVN.cpp | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/llvm/lib/Transforms/Scalar/GVN.cpp b/llvm/lib/Transforms/Scalar/GVN.cpp
index 8bff458f88bb9..affae41ed2c83 100644
--- a/llvm/lib/Transforms/Scalar/GVN.cpp
+++ b/llvm/lib/Transforms/Scalar/GVN.cpp
@@ -2367,12 +2367,15 @@ uint32_t GVNPass::ValueTable::phiTranslateImpl(const BasicBlock *Pred,
   // See if we can refine the value number by looking at the PN incoming value
   // for the given predecessor.
   if (PHINode *PN = NumberingPhi[Num]) {
-    if (PN->getParent() == PhiBlock)
-      for (unsigned I = 0; I != PN->getNumIncomingValues(); ++I)
-        if (PN->getIncomingBlock(I) == Pred)
-          if (uint32_t TransVal = lookup(PN->getIncomingValue(I), false))
-            return TransVal;
-    return Num;
+    if (PN->getParent() != PhiBlock)
+      return Num;
+
+    for (unsigned I = 0; I != PN->getNumIncomingValues(); ++I) {
+      if (PN->getIncomingBlock(I) != Pred)
+        continue;
+      if (uint32_t TransVal = lookup(PN->getIncomingValue(I), false))
+        return TransVal;
+    }
   }
 
   if (BasicBlock *BB = NumberingBB[Num]) {