[clang] [CIR][X86] Add support for cmp builtins (PR #174318)

[Zhihui Yang via cfe-commits]

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@@ -501,19 +417,88 @@ static mlir::Value emitX86vpcom(CIRGenBuilderTy &builder, mlir::Location loc,
   return builder.createVecCompare(loc, pred, op0, op1);
 }
 
-std::optional<mlir::Value>
-CIRGenFunction::emitX86BuiltinExpr(unsigned builtinID, const CallExpr *expr) {
+static cir::CmpOpKind getCmpPredFromImm(unsigned imm) {
+  switch (imm) {
+  case 0:
+    return cir::CmpOpKind::eq;
+  case 1:
+    return cir::CmpOpKind::lt;
+  case 2:
+    return cir::CmpOpKind::le;
+  case 4:
+    return cir::CmpOpKind::ne;
+  case 5:
+    return cir::CmpOpKind::ge;
+  case 6:
+    return cir::CmpOpKind::gt;
+  default:
+    llvm_unreachable("Unknown condition code");
+  }
+}
+
+static mlir::Value emitX86MaskedCompare(CIRGenBuilderTy &builder,
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YGGkk wrote:

I see it, I will change my code

https://github.com/llvm/llvm-project/pull/174318