bolt/test/runtime/X86/instrumentation-pie.c

   1 /* Checks that BOLT correctly handles instrumentation of executables built
   2  * with PIE with further optimization.
   3  */
   4 #include <stdio.h>
   5
   6 int foo(int x) { return x + 1; }
   7
   8 int fib(int x) {
   9   if (x < 2)
  10     return x;
  11   return fib(x - 1) + fib(x - 2);
  12 }
  13
  14 int bar(int x) { return x - 1; }
  15
  16 int main(int argc, char **argv) {
  17   printf("fib(%d) = %d\n", argc, fib(argc));
  18   return 0;
  19 }
  20
  21 /*
  22 REQUIRES: system-linux,bolt-runtime
  23
  24 RUN: %clang %cflags %s -o %t.exe -Wl,-q -pie -fpie
  25
  26 RUN: llvm-bolt %t.exe --instrument --instrumentation-file=%t.fdata \
  27 RUN:   -o %t.instrumented
  28
  29 # Instrumented program needs to finish returning zero
  30 RUN: %t.instrumented 1 2 3 | FileCheck %s -check-prefix=CHECK-OUTPUT
  31
  32 # Test that the instrumented data makes sense
  33 RUN:  llvm-bolt %t.exe -o %t.bolted --data %t.fdata \
  34 RUN:    --reorder-blocks=ext-tsp --reorder-functions=hfsort+
  35
  36 RUN: %t.bolted 1 2 3  | FileCheck %s -check-prefix=CHECK-OUTPUT
  37
  38 CHECK-OUTPUT: fib(4) = 3
  39 */