[llvm] [PowerPC] Implement __atomic_fetch_min/max for i128 (PR #69573)

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``````````bash
git-clang-format --diff ba47bc7fd41278926552becca758d42cf4f793c1 11484b4a008b11b5a03c6b730ccf48b11aa0d8cc -- llvm/lib/Target/PowerPC/PPCExpandAtomicPseudoInsts.cpp llvm/lib/Target/PowerPC/PPCISelLowering.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/PowerPC/PPCExpandAtomicPseudoInsts.cpp b/llvm/lib/Target/PowerPC/PPCExpandAtomicPseudoInsts.cpp
index c8554ce2eb55..022aa0391293 100644
--- a/llvm/lib/Target/PowerPC/PPCExpandAtomicPseudoInsts.cpp
+++ b/llvm/lib/Target/PowerPC/PPCExpandAtomicPseudoInsts.cpp
@@ -395,9 +395,7 @@ bool PPCExpandAtomicPseudo::expandAtomicRMWMinMax128(
   }
 
   BuildMI(CurrentMBB, DL, LL, Old).addReg(RA).addReg(RB);
-  BuildMI(CurrentMBB, DL, TII->get(CmpOp), PPC::CR0)
-      .addReg(OldHi)
-      .addReg(OpHi);
+  BuildMI(CurrentMBB, DL, TII->get(CmpOp), PPC::CR0).addReg(OldHi).addReg(OpHi);
   BuildMI(CurrentMBB, DL, TII->get(PPC::BCC))
       .addImm(CmpSuccPred)
       .addReg(PPC::CR0)

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https://github.com/llvm/llvm-project/pull/69573