[llvm] [IR] Improve code in isIdenticalToWhenDefined (NFC) (PR #151881)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-ir

Author: Ramkumar Ramachandra (artagnon)

<details>
<summary>Changes</summary>

Prefer llvm::equal() over std::equal().

---
Full diff: https://github.com/llvm/llvm-project/pull/151881.diff


1 Files Affected:

- (modified) llvm/lib/IR/Instruction.cpp (+4-5) 


``````````diff
diff --git a/llvm/lib/IR/Instruction.cpp b/llvm/lib/IR/Instruction.cpp
index 763cc1832b794..b7cd12ac9691e 100644
--- a/llvm/lib/IR/Instruction.cpp
+++ b/llvm/lib/IR/Instruction.cpp
@@ -942,14 +942,13 @@ bool Instruction::isIdenticalToWhenDefined(const Instruction *I,
 
   // We have two instructions of identical opcode and #operands.  Check to see
   // if all operands are the same.
-  if (!std::equal(op_begin(), op_end(), I->op_begin()))
+  if (!equal(operands(), I->operands()))
     return false;
 
   // WARNING: this logic must be kept in sync with EliminateDuplicatePHINodes()!
-  if (const PHINode *thisPHI = dyn_cast<PHINode>(this)) {
-    const PHINode *otherPHI = cast<PHINode>(I);
-    return std::equal(thisPHI->block_begin(), thisPHI->block_end(),
-                      otherPHI->block_begin());
+  if (const PHINode *Phi = dyn_cast<PHINode>(this)) {
+    const PHINode *OtherPhi = cast<PHINode>(I);
+    return equal(Phi->blocks(), OtherPhi->blocks());
   }
 
   return this->hasSameSpecialState(I, /*IgnoreAlignment=*/false,

``````````

</details>


https://github.com/llvm/llvm-project/pull/151881