28 lines · cpp
1// RUN: %clang_cc1 -std=c++17 -triple x86_64-linux-gnu -emit-llvm -o - %s | FileCheck %s2 3int a[1];4// CHECK: @a = global [1 x i32] zeroinitializer5template <int>6void test_transform() {7 auto [b] = a;8}9void (*d)(){test_transform<0>};10// CHECK-LABEL: define {{.*}} @_Z14test_transformILi0EEvv11// CHECK: [[ENTRY:.*]]:12// CHECK-NEXT: [[ARR:%.*]] = alloca [1 x i32]13// CHECK-NEXT: [[BEGIN:%.*]] = getelementptr inbounds [1 x i32], ptr [[ARR]], i64 0, i64 014// 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]], 123// CHECK-NEXT: [[EQ:%.*]] = icmp eq i64 [[NEXT]], 124// CHECK-NEXT: br i1 [[EQ]], label %[[FIN:.*]], label %[[BODY]]25// CHECK-EMPTY:26// CHECK-NEXT: [[FIN]]:27// CHECK-NEXT: ret void28