[llvm] [Hexagaon] Remove emplace workaround (NFC) (PR #145718)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-hexagon

Author: AZero13 (AZero13)

<details>
<summary>Changes</summary>

It was done because it was not supported in gcc 4.7.4.

---
Full diff: https://github.com/llvm/llvm-project/pull/145718.diff


1 Files Affected:

- (modified) llvm/lib/Target/Hexagon/HexagonFrameLowering.cpp (+1-4) 


``````````diff
diff --git a/llvm/lib/Target/Hexagon/HexagonFrameLowering.cpp b/llvm/lib/Target/Hexagon/HexagonFrameLowering.cpp
index b75c8863b6999..b3c61e1829bf9 100644
--- a/llvm/lib/Target/Hexagon/HexagonFrameLowering.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonFrameLowering.cpp
@@ -2196,10 +2196,7 @@ void HexagonFrameLowering::optimizeSpillSlots(MachineFunction &MF,
   // and collect relevant information.
   for (auto &B : MF) {
     std::map<int,IndexType> LastStore, LastLoad;
-    // Emplace appears not to be supported in gcc 4.7.2-4.
-    //auto P = BlockIndexes.emplace(&B, HexagonBlockRanges::InstrIndexMap(B));
-    auto P = BlockIndexes.insert(
-                std::make_pair(&B, HexagonBlockRanges::InstrIndexMap(B)));
+    auto P = BlockIndexes.emplace(&B, HexagonBlockRanges::InstrIndexMap(B));
     auto &IndexMap = P.first->second;
     LLVM_DEBUG(dbgs() << "Index map for " << printMBBReference(B) << "\n"
                       << IndexMap << '\n');

``````````

</details>


https://github.com/llvm/llvm-project/pull/145718