[llvm] [PeepholeOptimizer] Add REG_SEQUENCE subregister use folding (PR #205795)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp -- llvm/include/llvm/CodeGen/TargetInstrInfo.h llvm/lib/CodeGen/PeepholeOptimizer.cpp llvm/lib/Target/AMDGPU/SIInstrInfo.cpp llvm/lib/Target/AMDGPU/SIInstrInfo.h --diff_from_common_commit
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/CodeGen/PeepholeOptimizer.cpp b/llvm/lib/CodeGen/PeepholeOptimizer.cpp
index 8ac336e8d..d9c3823be 100644
--- a/llvm/lib/CodeGen/PeepholeOptimizer.cpp
+++ b/llvm/lib/CodeGen/PeepholeOptimizer.cpp
@@ -161,8 +161,10 @@ STATISTIC(NumSelects, "Number of selects optimized");
 STATISTIC(NumUncoalescableCopies, "Number of uncoalescable copies optimized");
 STATISTIC(NumRewrittenCopies, "Number of copies rewritten");
 STATISTIC(NumNAPhysCopies, "Number of non-allocatable physical copies removed");
-STATISTIC(NumRegSeqUsesRewritten, "Number of REG_SEQUENCE subregister uses rewritten");
-STATISTIC(NumRegSeqEliminated, "Number of REG_SEQUENCE instructions eliminated");
+STATISTIC(NumRegSeqUsesRewritten,
+          "Number of REG_SEQUENCE subregister uses rewritten");
+STATISTIC(NumRegSeqEliminated,
+          "Number of REG_SEQUENCE instructions eliminated");
 
 namespace {
 

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https://github.com/llvm/llvm-project/pull/205795