File: fake-use-noreturn.cpp

package info (click to toggle)
llvm-toolchain-21 1%3A21.1.0-1
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 2,235,796 kB
  • sloc: cpp: 7,617,614; ansic: 1,433,901; asm: 1,058,726; python: 252,096; f90: 94,671; objc: 70,753; lisp: 42,813; pascal: 18,401; sh: 10,032; ml: 5,111; perl: 4,720; awk: 3,523; makefile: 3,401; javascript: 2,272; xml: 892; fortran: 770
file content (28 lines) | stat: -rw-r--r-- 813 bytes parent folder | download | duplicates (6)
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
27
28
// RUN: %clang_cc1 %s -triple x86_64-unknown-linux-gnu -emit-llvm -fextend-variable-liveness -o - | FileCheck %s
//
// Check we can correctly produce fake uses for function-level variables even
// when we have a return in a nested conditional and there is no code at the end
// of the function.

// CHECK-LABEL: define{{.*}}@_Z3fooi
// CHECK:         [[I_FAKE_USE:%[a-zA-Z0-9\.]+]] = load i32, ptr %i.addr
// CHECK:         call void (...) @llvm.fake.use(i32 [[I_FAKE_USE]])
// CHECK-LABEL: define{{.*}}@_ZN1C3barEi
// CHECK:         [[J_FAKE_USE:%[a-zA-Z0-9\.]+]] = load i32, ptr %j.addr
// CHECK:         call void (...) @llvm.fake.use(i32 [[J_FAKE_USE]])

void foo(int i) {
   while (0)
     if (1)
       return;
}

class C {
  void bar(int j);
};

void C::bar(int j) {
  while (0)
    if (1)
      return;
}