[Hexagon] Avoid repeated map lookups (NFC)

[kazutakahirata]

No description provided.

[llvmbot]

@llvm/pr-subscribers-backend-hexagon

Author: Kazu Hirata (kazutakahirata)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/127447.diff

1 Files Affected:

• (modified) llvm/lib/Target/Hexagon/HexagonCommonGEP.cpp (+4-2)

diff --git a/llvm/lib/Target/Hexagon/HexagonCommonGEP.cpp b/llvm/lib/Target/Hexagon/HexagonCommonGEP.cpp
index d95d4c0d20318..ea7a429056be9 100644
--- a/llvm/lib/Target/Hexagon/HexagonCommonGEP.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonCommonGEP.cpp
@@ -604,8 +604,10 @@ void HexagonCommonGEP::common() {
       uint32_t NF = N->Flags;
       // If N is used, append all original values of N to the list of
       // original values of Min.
-      if (NF & GepNode::Used)
-        MinUs.insert(Uses[N].begin(), Uses[N].end());
+      if (NF & GepNode::Used) {
+        auto &U = Uses[N];
+        MinUs.insert(U.begin(), U.end());
+      }
       Flags |= NF;
     }
     if (MinUs.empty())