[InstCombine] reorder code, fix formatting; NFC

The affected code can be updated to solve #54364,
so make some cosmetic diffs before real changes.

diff --git a/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp b/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
index 1732b29..d2a92ad 100644 (file)
--- a/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
@@ -1918,24 +1918,24 @@ static BinopElts getAlternateBinop(BinaryOperator *BO, const DataLayout &DL) {
   Value *BO0 = BO->getOperand(0), *BO1 = BO->getOperand(1);
   Type *Ty = BO->getType();
   switch (BO->getOpcode()) {
-    case Instruction::Shl: {
-      // shl X, C --> mul X, (1 << C)
-      Constant *C;
-      if (match(BO1, m_Constant(C))) {
-        Constant *ShlOne = ConstantExpr::getShl(ConstantInt::get(Ty, 1), C);
-        return { Instruction::Mul, BO0, ShlOne };
-      }
-      break;
-    }
-    case Instruction::Or: {
-      // or X, C --> add X, C (when X and C have no common bits set)
-      const APInt *C;
-      if (match(BO1, m_APInt(C)) && MaskedValueIsZero(BO0, *C, DL))
-        return { Instruction::Add, BO0, BO1 };
-      break;
+  case Instruction::Shl: {
+    // shl X, C --> mul X, (1 << C)
+    Constant *C;
+    if (match(BO1, m_Constant(C))) {
+      Constant *ShlOne = ConstantExpr::getShl(ConstantInt::get(Ty, 1), C);
+      return {Instruction::Mul, BO0, ShlOne};
     }
-    default:
-      break;
+    break;
+  }
+  case Instruction::Or: {
+    // or X, C --> add X, C (when X and C have no common bits set)
+    const APInt *C;
+    if (match(BO1, m_APInt(C)) && MaskedValueIsZero(BO0, *C, DL))
+      return {Instruction::Add, BO0, BO1};
+    break;
+  }
+  default:
+    break;
   }
   return {};
 }
@@ -2055,12 +2055,12 @@ Instruction *InstCombinerImpl::foldSelectShuffle(ShuffleVectorInst &Shuf) {
   Value *X, *Y;
   Constant *C0, *C1;
   bool ConstantsAreOp1;
-  if (match(B0, m_BinOp(m_Value(X), m_Constant(C0))) &&
-      match(B1, m_BinOp(m_Value(Y), m_Constant(C1))))
-    ConstantsAreOp1 = true;
-  else if (match(B0, m_BinOp(m_Constant(C0), m_Value(X))) &&
-           match(B1, m_BinOp(m_Constant(C1), m_Value(Y))))
+  if (match(B0, m_BinOp(m_Constant(C0), m_Value(X))) &&
+      match(B1, m_BinOp(m_Constant(C1), m_Value(Y))))
     ConstantsAreOp1 = false;
+  else if (match(B0, m_BinOp(m_Value(X), m_Constant(C0))) &&
+           match(B1, m_BinOp(m_Value(Y), m_Constant(C1))))
+    ConstantsAreOp1 = true;
   else
     return nullptr;