34 lines · c
1// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 22// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm %s -o - | FileCheck %s3 4// Test for PR62830 where there are 2 infinite cycles using goto. Make sure5// clang codegen doesn't hang.6int a;7 8// CHECK-LABEL: define dso_local i32 @main9// CHECK-SAME: () #[[ATTR0:[0-9]+]] {10// CHECK-NEXT: entry:11// CHECK-NEXT: [[RETVAL:%.*]] = alloca i32, align 412// CHECK-NEXT: store i32 0, ptr [[RETVAL]], align 413// CHECK-NEXT: br label [[L1:%.*]]14// CHECK: L1:15// CHECK-NEXT: br label [[L1]]16// CHECK: L2:17// CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr @a, align 418// CHECK-NEXT: [[TOBOOL:%.*]] = icmp ne i32 [[TMP0]], 019// CHECK-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]20// CHECK: if.then:21// CHECK-NEXT: br label [[L2:%.*]]22// CHECK: if.end:23// CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[RETVAL]], align 424// CHECK-NEXT: ret i32 [[TMP1]]25//26int main() {27L1:28 goto L1;29 30L2:31 if (!a)32 goto L2;33}34