File: fake-use-noreturn.cpp

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.8-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,388 kB
  • sloc: cpp: 7,438,767; ansic: 1,393,871; asm: 1,012,926; python: 241,728; f90: 86,635; objc: 75,411; lisp: 42,144; pascal: 17,286; sh: 10,027; ml: 5,082; perl: 4,730; awk: 3,523; makefile: 3,349; javascript: 2,251; xml: 892; fortran: 672
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;
}