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

   1 // RUN: %clang_cc1 -emit-llvm -debug-info-kind=limited -fextend-variable-liveness -o - %s | FileCheck %s
   2
   3 // Clang adjusts the line numbers of returns based on the line numbers of
   4 // dominating stores to %retval; we test that fake use intrinsics do not affect
   5 // this, and the return is given the correct line.
   6
   7 // CHECK: define{{.*}}@main
   8 // CHECK: call void (...) @llvm.fake.use(i32
   9 // CHECK-NEXT: ret i32{{.*}}!dbg ![[MDINDEX:[0-9]*]]
  10 // CHECK: ![[MDINDEX]] = !DILocation(line: [[# @LINE + 5]]
  11 int main()
  12 {
  13   volatile int a = 1;
  14   int b = a + 2;
  15   return b;
  16 }