| // RUN: %clang_cc1 -emit-llvm -o - -std=c2x %s | FileCheck %s |
| |
| // C2x 6.7.2.5 EXAMPLE 5 |
| unsigned long long vla_size(int n) { |
| // CHECK: vla_size |
| |
| return sizeof( |
| typeof_unqual(char[n + 3]) |
| ); // execution-time sizeof, translation-time typeof operation |
| // CHECK: [[N_ADDR:%.*]] = alloca i32 |
| // CHECK: store i32 {{%.*}} ptr [[N_ADDR]] |
| // CHECK: [[N:%.*]] = load i32, ptr [[N_ADDR]] |
| // CHECK: [[TEMP:%.*]] = add nsw i32 [[N]], 3 |
| // CHECK: [[RET:%.*]] = zext i32 [[TEMP]] to i64 |
| // CHECK: ret i64 [[RET]] |
| } |
| |
| int main() { |
| return (int)vla_size(10); // vla_size returns 13 |
| } |
| |
