[llvm] [X86] Use hasSingleElement (NFC) (PR #133040)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-x86

Author: Kazu Hirata (kazutakahirata)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/133040.diff


1 Files Affected:

- (modified) llvm/lib/Target/X86/X86CmovConversion.cpp (+1-1) 


``````````diff
diff --git a/llvm/lib/Target/X86/X86CmovConversion.cpp b/llvm/lib/Target/X86/X86CmovConversion.cpp
index 00bb1e588bd9b..d639ca56b77d6 100644
--- a/llvm/lib/Target/X86/X86CmovConversion.cpp
+++ b/llvm/lib/Target/X86/X86CmovConversion.cpp
@@ -555,7 +555,7 @@ bool X86CmovConverterPass::checkForProfitableCmovCandidates(
       // This is another conservative check to avoid converting CMOV instruction
       // used with tree-search like algorithm, where the branch is unpredicted.
       auto UIs = MRI->use_instructions(MI->defs().begin()->getReg());
-      if (!UIs.empty() && ++UIs.begin() == UIs.end()) {
+      if (hasSingleElement(UIs)) {
         unsigned Op = UIs.begin()->getOpcode();
         if (Op == X86::MOV64rm || Op == X86::MOV32rm) {
           WorthOpGroup = false;

``````````

</details>


https://github.com/llvm/llvm-project/pull/133040