clang/test/CodeGen/fake-use-return-line.c

// RUN: %clang_cc1 -emit-llvm -debug-info-kind=limited -fextend-variable-liveness -o - %s | FileCheck %s

// Clang adjusts the line numbers of returns based on the line numbers of
// dominating stores to %retval; we test that fake use intrinsics do not affect
// this, and the return is given the correct line.

// CHECK: define{{.*}}@main
// CHECK: call void (...) @llvm.fake.use(i32
// CHECK-NEXT: ret i32{{.*}}!dbg ![[MDINDEX:[0-9]*]]
// CHECK: ![[MDINDEX]] = !DILocation(line: [[# @LINE + 5]]
int main()
{
  volatile int a = 1;
  int b = a + 2;
  return b;
}