File: empty-nontrivially-copyable.cpp

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (26 lines) | stat: -rw-r--r-- 931 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
 
// RUN: %clang_cc1 -no-opaque-pointers -triple armv7-apple-ios -x c++ -emit-llvm -o - %s | FileCheck %s
// RUN: %clang_cc1 -no-opaque-pointers -triple arm64-apple-ios -x c++ -emit-llvm -o - %s | FileCheck %s

// According to the Itanium ABI (3.1.1), types with non-trivial copy
// constructors passed by value should be passed indirectly, with the caller
// creating a temporary.

struct Empty;

struct Empty {
  Empty(const Empty &e);
  bool check();
};

bool foo(Empty e) {
// CHECK: @_Z3foo5Empty(%struct.Empty* noundef %e)
// CHECK: call {{.*}} @_ZN5Empty5checkEv(%struct.Empty* {{[^,]*}} %e)
  return e.check();
}

void caller(Empty &e) {
// CHECK: @_Z6callerR5Empty(%struct.Empty* noundef nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) %e)
// CHECK: call {{.*}} @_ZN5EmptyC1ERKS_(%struct.Empty* {{[^,]*}} [[NEWTMP:%.*]], %struct.Empty*
// CHECK: call {{.*}} @_Z3foo5Empty(%struct.Empty* noundef [[NEWTMP]])
  foo(e);
}