implemented a lowering function for CIR longjump op

Author: toyoyou11

clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp

@@ -4329,6 +4329,14 @@ mlir::LogicalResult CIRToLLVMEhSetjmpOpLowering::matchAndRewrite(
   return mlir::success();
 }
 
+mlir::LogicalResult CIRToLLVMEhLongjmpOpLowering::matchAndRewrite(
+    cir::EhLongjmpOp op, OpAdaptor adaptor,
+    mlir::ConversionPatternRewriter &rewriter) const {
+  replaceOpWithCallLLVMIntrinsicOp(rewriter, op, "llvm.eh.sjlj.longjmp",
+                                   {}, adaptor.getOperands());
+  return mlir::success();
+}
+
 mlir::LogicalResult CIRToLLVMCatchParamOpLowering::matchAndRewrite(
     cir::CatchParamOp op, OpAdaptor adaptor,
     mlir::ConversionPatternRewriter &rewriter) const {
@@ -4631,6 +4639,7 @@ void populateCIRToLLVMConversionPatterns(
       CIRToLLVMEhInflightOpLowering,
       CIRToLLVMEhTypeIdOpLowering,
       CIRToLLVMEhSetjmpOpLowering,
+      CIRToLLVMEhLongjmpOpLowering,
       CIRToLLVMExpectOpLowering,
       CIRToLLVMExtractMemberOpLowering,
       CIRToLLVMFrameAddrOpLowering,

clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.h

@@ -1278,6 +1278,17 @@ class CIRToLLVMEhSetjmpOpLowering
                   mlir::ConversionPatternRewriter &) const override;
 };
 
+class CIRToLLVMEhLongjmpOpLowering
+    : public mlir::OpConversionPattern<cir::EhLongjmpOp> {
+public:
+  using mlir::OpConversionPattern<cir::EhLongjmpOp>::OpConversionPattern;
+
+  mlir::LogicalResult
+  matchAndRewrite(cir::EhLongjmpOp op, OpAdaptor,
+                  mlir::ConversionPatternRewriter &) const override;
+};
+
+
 class CIRToLLVMCatchParamOpLowering
     : public mlir::OpConversionPattern<cir::CatchParamOp> {
 public: