added test for lowering longjmp

Author: toyoyou11

clang/test/CIR/Lowering/setjmp-longjmp.cir

@@ -23,6 +23,15 @@ module {
     %0 = cir.eh.setjmp %arg0 : (!p32) -> !s32i
     cir.return %0 : !s32i
   }
+  cir.func @test_longjmp(%arg0 : !p32) {
+
+    // MLIR: llvm.func @test_longjmp([[ARG0:%.*]]: !llvm.ptr)
+    // MLIR-NEXT:    llvm.call_intrinsic "llvm.eh.sjlj.longjmp"([[ARG0]]) : (!llvm.ptr) -> ()
+    // MLIR-NEXT:    llvm.unreachable
+    // MLIR-NEXT:  }
+    cir.eh.longjmp %arg0 : (!p32) -> ()
+    cir.unreachable
+  }
   // MLIR: }
 }
 

clang/test/CIR/Transforms/setjmp-longjmp-lower.c

@@ -52,3 +52,23 @@ void test_setjmp2(void *env) {
   // AFTER-LOWERING-PREPARE-NEXT: cir.eh.setjmp [[CAST]] : (!cir.ptr<!cir.ptr<!void>>) -> !s32i
   _setjmp (env);
 }
+void test_longjmp(void *env) {
+  // BEFORE-LOWERING-PREPARE-LABEL: test_longjmp
+  // BEFORE-LOWERING-PREPARE-SAME: [[ENV:%.*]]:
+  // BEFORE-LOWERING-PREPARE-NEXT: [[ENV_ALLOCA:%.*]] = cir.alloca
+  // BEFORE-LOWERING-PREPARE-NEXT: cir.store [[ENV]], [[ENV_ALLOCA]]
+  // BEFORE-LOWERING-PREPARE-NEXT: [[ENV_LOAD:%.*]] = cir.load align(8) [[ENV_ALLOCA]]
+  // BEFORE-LOWERING-PREPARE-NEXT: [[CAST:%.*]] = cir.cast(bitcast, [[ENV_LOAD]]
+  // BEFORE-LOWERING-PREPARE-NEXT: cir.eh.longjmp [[CAST]] : (!cir.ptr<!cir.ptr<!void>>) -> ()
+  // BEFORE-LOWERING-PREPARE-NEXT: cir.unreachable
+
+  // AFTER-LOWERING-PREPARE-LABEL: test_longjmp
+  // AFTER-LOWERING-PREPARE-SAME: [[ENV:%.*]]:
+  // AFTER-LOWERING-PREPARE-NEXT: [[ENV_ALLOCA:%.*]] = cir.alloca
+  // AFTER-LOWERING-PREPARE-NEXT: cir.store [[ENV]], [[ENV_ALLOCA]]
+  // AFTER-LOWERING-PREPARE-NEXT: [[ENV_LOAD:%.*]] = cir.load align(8) [[ENV_ALLOCA]]
+  // AFTER-LOWERING-PREPARE-NEXT: [[CAST:%.*]] = cir.cast(bitcast, [[ENV_LOAD]]
+  // AFTER-LOWERING-PREPARE-NEXT: cir.eh.longjmp [[CAST]] : (!cir.ptr<!cir.ptr<!void>>)
+  // AFTER-LOWERING-PREPARE-NEXT: cir.unreachable
+  __builtin_longjmp(env, 1);
+}