[X86] Use explicit X86::CondCode argument in EmitTest/EmitCmp/isX86CC…

…Signed calls. NFC. (llvm#125493)

Helps identify the enum code during debugging.

llvm/lib/Target/X86/X86ISelLowering.cpp

@@ -2944,7 +2944,7 @@ bool X86::isOffsetSuitableForCodeModel(int64_t Offset, CodeModel::Model CM,
 }
 
 /// Return true if the condition is an signed comparison operation.
-static bool isX86CCSigned(unsigned X86CC) {
+static bool isX86CCSigned(X86::CondCode X86CC) {
   switch (X86CC) {
   default:
     llvm_unreachable("Invalid integer condition!");
@@ -22975,7 +22975,7 @@ static bool isProfitableToUseFlagOp(SDValue Op) {
 
 /// Emit nodes that will be selected as "test Op0,Op0", or something
 /// equivalent.
-static SDValue EmitTest(SDValue Op, unsigned X86CC, const SDLoc &dl,
+static SDValue EmitTest(SDValue Op, X86::CondCode X86CC, const SDLoc &dl,
                         SelectionDAG &DAG, const X86Subtarget &Subtarget) {
   // CF and OF aren't always set the way we want. Determine which
   // of these we need.
@@ -23085,7 +23085,7 @@ static SDValue EmitTest(SDValue Op, unsigned X86CC, const SDLoc &dl,
 
 /// Emit nodes that will be selected as "cmp Op0,Op1", or something
 /// equivalent.
-static SDValue EmitCmp(SDValue Op0, SDValue Op1, unsigned X86CC,
+static SDValue EmitCmp(SDValue Op0, SDValue Op1, X86::CondCode X86CC,
                        const SDLoc &dl, SelectionDAG &DAG,
                        const X86Subtarget &Subtarget) {
   if (isNullConstant(Op1))