| // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 2 |
| // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -S -emit-llvm %s -o - | FileCheck %s |
| |
| // Test for PR62830 where there are 2 infinite cycles using goto. Make sure |
| // clang codegen doesn't hang. |
| int a; |
| |
| // CHECK-LABEL: define dso_local i32 @main |
| // CHECK-SAME: () #[[ATTR0:[0-9]+]] { |
| // CHECK-NEXT: entry: |
| // CHECK-NEXT: [[RETVAL:%.*]] = alloca i32, align 4 |
| // CHECK-NEXT: store i32 0, ptr [[RETVAL]], align 4 |
| // CHECK-NEXT: br label [[L1:%.*]] |
| // CHECK: L1: |
| // CHECK-NEXT: br label [[L1]] |
| // CHECK: L2: |
| // CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr @a, align 4 |
| // CHECK-NEXT: [[TOBOOL:%.*]] = icmp ne i32 [[TMP0]], 0 |
| // CHECK-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]] |
| // CHECK: if.then: |
| // CHECK-NEXT: br label [[L2:%.*]] |
| // CHECK: if.end: |
| // CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[RETVAL]], align 4 |
| // CHECK-NEXT: ret i32 [[TMP1]] |
| // |
| int main() { |
| L1: |
| goto L1; |
| |
| L2: |
| if (!a) |
| goto L2; |
| } |
