[X86] Refactored LowerINTRINSIC_W_CHAIN to use a switch statament. NFCI.

RKSimon · RKSimon · commit 05cfa8384394 · 2017-05-03T10:40:18.000Z
Pre-commit as requested in D32769.

llvm-svn: 302010
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -20284,16 +20284,17 @@ static SDValue LowerINTRINSIC_W_CHAIN(SDValue Op, const X86Subtarget &Subtarget,
                                       SelectionDAG &DAG) {
   unsigned IntNo = cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue();
 
-  const IntrinsicData* IntrData = getIntrinsicWithChain(IntNo);
+  const IntrinsicData *IntrData = getIntrinsicWithChain(IntNo);
   if (!IntrData) {
-    if (IntNo == llvm::Intrinsic::x86_seh_ehregnode)
+    switch (IntNo) {
+    case llvm::Intrinsic::x86_seh_ehregnode:
       return MarkEHRegistrationNode(Op, DAG);
-    if (IntNo == llvm::Intrinsic::x86_seh_ehguard)
+    case llvm::Intrinsic::x86_seh_ehguard:
       return MarkEHGuard(Op, DAG);
-    if (IntNo == llvm::Intrinsic::x86_flags_read_u32 ||
-        IntNo == llvm::Intrinsic::x86_flags_read_u64 ||
-        IntNo == llvm::Intrinsic::x86_flags_write_u32 ||
-        IntNo == llvm::Intrinsic::x86_flags_write_u64) {
+    case llvm::Intrinsic::x86_flags_read_u32:
+    case llvm::Intrinsic::x86_flags_read_u64:
+    case llvm::Intrinsic::x86_flags_write_u32:
+    case llvm::Intrinsic::x86_flags_write_u64: {
       // We need a frame pointer because this will get lowered to a PUSH/POP
       // sequence.
       MachineFrameInfo &MFI = DAG.getMachineFunction().getFrameInfo();
@@ -20302,6 +20303,7 @@ static SDValue LowerINTRINSIC_W_CHAIN(SDValue Op, const X86Subtarget &Subtarget,
       // during ExpandISelPseudos in EmitInstrWithCustomInserter.
       return SDValue();
     }
+    }
     return SDValue();
   }
 
