[ARM] Avoid repeated hash lookups (NFC)

[kazutakahirata]

No description provided.

[llvmbot]

@llvm/pr-subscribers-backend-arm

Author: Kazu Hirata (kazutakahirata)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/128994.diff

1 Files Affected:

• (modified) llvm/lib/Target/ARM/ARMISelLowering.cpp (+3-2)

diff --git a/llvm/lib/Target/ARM/ARMISelLowering.cpp b/llvm/lib/Target/ARM/ARMISelLowering.cpp
index c7ed73d0e95f7..e3dc337bd0843 100644
--- a/llvm/lib/Target/ARM/ARMISelLowering.cpp
+++ b/llvm/lib/Target/ARM/ARMISelLowering.cpp
@@ -2731,8 +2731,9 @@ ARMTargetLowering::LowerCall(TargetLowering::CallLoweringInfo &CLI,
 
       SDValue ByValSrc;
       bool NeedsStackCopy;
-      if (ByValTemporaries.contains(realArgIdx)) {
-        ByValSrc = ByValTemporaries[realArgIdx];
+      if (auto It = ByValTemporaries.find(realArgIdx);
+          It != ByValTemporaries.end()) {
+        ByValSrc = It->second;
         NeedsStackCopy = true;
       } else {
         ByValSrc = Arg;