1 // RUN: %clang_cc1 -std=c++17 -triple x86_64-linux-gnu -emit-llvm -o - %s | FileCheck %s 2 3 int a[1]; 4 // CHECK: @a = global [1 x i32] zeroinitializer 5 template <int> 6 void test_transform() { 7 auto [b] = a; 8 } 9 void (*d)(){test_transform<0>}; 10 // CHECK-LABEL: define {{.*}} @_Z14test_transformILi0EEvv 11 // CHECK: [[ENTRY:.*]]: 12 // CHECK-NEXT: [[ARR:%.*]] = alloca [1 x i32] 13 // CHECK-NEXT: [[BEGIN:%.*]] = getelementptr inbounds [1 x i32], ptr [[ARR]], i64 0, i64 0 14 // CHECK-NEXT: br label %[[BODY:.*]] 15 // CHECK-EMPTY: 16 // CHECK-NEXT: [[BODY]]: 17 // CHECK-NEXT: [[CUR:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ [[NEXT:%.*]], %[[BODY]] ] 18 // CHECK-NEXT: [[DEST:%.*]] = getelementptr inbounds i32, ptr [[BEGIN]], i64 [[CUR]] 19 // CHECK-NEXT: [[SRC:%.*]] = getelementptr inbounds nuw [1 x i32], ptr @a, i64 0, i64 [[CUR]] 20 // CHECK-NEXT: [[X:%.*]] = load i32, ptr [[SRC]] 21 // CHECK-NEXT: store i32 [[X]], ptr [[DEST]] 22 // CHECK-NEXT: [[NEXT]] = add nuw i64 [[CUR]], 1 23 // CHECK-NEXT: [[EQ:%.*]] = icmp eq i64 [[NEXT]], 1 24 // CHECK-NEXT: br i1 [[EQ]], label %[[FIN:.*]], label %[[BODY]] 25 // CHECK-EMPTY: 26 // CHECK-NEXT: [[FIN]]: 27 // CHECK-NEXT: ret void 28