| // RUN: %clang_cc1 -emit-llvm-bc -disable-llvm-passes -o %t.bc %s |
| // RUN: llvm-dis %t.bc -o - | FileCheck %s |
| |
| // Test case for PR45426. Make sure we do not crash while writing bitcode |
| // containing a simplify-able fneg constant expression. |
| // |
| // CHECK-LABEL define i32 @main() |
| // CHECK: entry: |
| // CHECK-NEXT: %retval = alloca i32 |
| // CHECK-NEXT: store i32 0, ptr %retval |
| // CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr @b, @a |
| // CHECK-NEXT: [[ZEXT:%.*]] = zext i1 [[CMP]] to i32 |
| // CHECK-NEXT: [[SITOFP:%.*]] = sitofp i32 [[ZEXT]] to float |
| // CHECK-NEXT: [[LV:%.*]] = load ptr, ptr @c |
| // CHECK-NEXT: store float [[SITOFP]], ptr [[LV]], align 4 |
| // CHECK-NEXT: [[FNEG:%.*]] = fneg float [[SITOFP]] |
| // CHECK-NEXT: [[CONV:%.*]] = fptosi float [[FNEG]] to i32 |
| // CHECK-NEXT: ret i32 [[CONV]] |
| |
| int a[], b; |
| float *c; |
| int main(void) { |
| return -(*c = &b != a); |
| } |
