[llvm] Revert "[GISEL] Add IRTranslation for shufflevector on scalable vector types" (PR #84330)

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git-clang-format --diff 9e0f5909d0af3911b19bb1f97fb400c3ce431f63 4a1435f3b2d2f80d09f8747fed771811ccb65eb4 -- llvm/include/llvm/CodeGen/GlobalISel/MachineIRBuilder.h llvm/lib/CodeGen/GlobalISel/CSEMIRBuilder.cpp llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp llvm/lib/CodeGen/MachineVerifier.cpp llvm/lib/Target/RISCV/RISCVISelLowering.cpp llvm/unittests/CodeGen/GlobalISel/LegalizerHelperTest.cpp llvm/unittests/CodeGen/GlobalISel/PatternMatchTest.cpp
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diff --git a/llvm/include/llvm/CodeGen/GlobalISel/MachineIRBuilder.h b/llvm/include/llvm/CodeGen/GlobalISel/MachineIRBuilder.h
index 1387a0a375..3ef0157abe 100644
--- a/llvm/include/llvm/CodeGen/GlobalISel/MachineIRBuilder.h
+++ b/llvm/include/llvm/CodeGen/GlobalISel/MachineIRBuilder.h
@@ -1063,8 +1063,7 @@ public:
 
   /// Build and insert \p Res = G_BUILD_VECTOR with \p Src replicated to fill
   /// the number of elements
-  MachineInstrBuilder buildSplatVector(const DstOp &Res,
-                                       const SrcOp &Src);
+  MachineInstrBuilder buildSplatVector(const DstOp &Res, const SrcOp &Src);
 
   /// Build and insert \p Res = G_BUILD_VECTOR_TRUNC \p Op0, ...
   ///
diff --git a/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp b/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
index 7c986dbbc2..e70f70c61b 100644
--- a/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
@@ -1639,8 +1639,10 @@ bool IRTranslator::translateGetElementPtr(const User &U,
       LLT IdxTy = MRI->getType(IdxReg);
       if (IdxTy != OffsetTy) {
         if (!IdxTy.isVector() && WantSplatVector) {
-          IdxReg = MIRBuilder.buildSplatVector(
-            OffsetTy.changeElementType(IdxTy), IdxReg).getReg(0);
+          IdxReg =
+              MIRBuilder
+                  .buildSplatVector(OffsetTy.changeElementType(IdxTy), IdxReg)
+                  .getReg(0);
         }
 
         IdxReg = MIRBuilder.buildSExtOrTrunc(OffsetTy, IdxReg).getReg(0);

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https://github.com/llvm/llvm-project/pull/84330