[llvm] [PowerPC] Remove some unused SDNodes and FastISel workaround (NFC) (PR #153964)

[via llvm-commits]

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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions h,cpp -- llvm/lib/Target/PowerPC/PPCISelLowering.cpp llvm/lib/Target/PowerPC/PPCISelLowering.h
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index cb786085c..b97d0e235 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -1787,7 +1787,8 @@ const char *PPCTargetLowering::getTargetNodeName(unsigned Opcode) const {
   case PPCISD::ADDI_DTPREL_L:   return "PPCISD::ADDI_DTPREL_L";
   case PPCISD::PADDI_DTPREL:
     return "PPCISD::PADDI_DTPREL";
-  case PPCISD::VADD_SPLAT:      return "PPCISD::VADD_SPLAT";
+  case PPCISD::VADD_SPLAT:
+    return "PPCISD::VADD_SPLAT";
   case PPCISD::XXSWAPD:         return "PPCISD::XXSWAPD";
   case PPCISD::SWAP_NO_CHAIN:   return "PPCISD::SWAP_NO_CHAIN";
   case PPCISD::BUILD_FP128:     return "PPCISD::BUILD_FP128";

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https://github.com/llvm/llvm-project/pull/153964