[llvm] [CalcSpillWeights] Simplify copy hint register collection. NFC. (PR #114236)

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:warning: C/C++ code formatter, clang-format found issues in your code. :warning:

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git-clang-format --diff c4e135ec04a2bef5d5a5a69dfbb069a15dbf2f5e 9d575a5e799b187763318e43299b700425ee664e --extensions cpp -- llvm/lib/CodeGen/CalcSpillWeights.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/CodeGen/CalcSpillWeights.cpp b/llvm/lib/CodeGen/CalcSpillWeights.cpp
index 4cc7fa149e..efc07cbd4c 100644
--- a/llvm/lib/CodeGen/CalcSpillWeights.cpp
+++ b/llvm/lib/CodeGen/CalcSpillWeights.cpp
@@ -277,8 +277,7 @@ float VirtRegAuxInfo::weightCalcHelper(LiveInterval &LI, SlotIndex *Start,
     SmallVector<std::pair<float, Register>, 4> FRegHints, VRegHints;
     for (const auto &[Reg, Weight] : Hint) {
       if (Reg != SkipReg)
-        (Reg.isPhysical() ? &FRegHints : &VRegHints)
-            ->emplace_back(Weight, Reg);
+        (Reg.isPhysical() ? &FRegHints : &VRegHints)->emplace_back(Weight, Reg);
     }
     auto HeavyFirst = [](const auto &LHS, const auto &RHS) {
       if (LHS.first != RHS.first)

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https://github.com/llvm/llvm-project/pull/114236