bolt/test/runtime/AArch64/instrumentation-ind-call.c

   1 #include <stdio.h>
   2
   3 typedef int (*func_ptr)(int, int);
   4
   5 int add(int a, int b) { return a + b; }
   6
   7 int main() {
   8   func_ptr fun;
   9   fun = add;
  10   int sum = fun(10, 20); // indirect call to 'add'
  11   printf("The sum is: %d\n", sum);
  12   return 0;
  13 }
  14 /*
  15 REQUIRES: system-linux,bolt-runtime
  16
  17 RUN: %clang %cflags %s -o %t.exe -Wl,-q -nopie -fpie
  18
  19 RUN: llvm-bolt %t.exe --instrument --instrumentation-file=%t.fdata \
  20 RUN:   -o %t.instrumented
  21
  22 # Instrumented program needs to finish returning zero
  23 RUN: %t.instrumented | FileCheck %s -check-prefix=CHECK-OUTPUT
  24
  25 # Test that the instrumented data makes sense
  26 RUN:  llvm-bolt %t.exe -o %t.bolted --data %t.fdata \
  27 RUN:    --reorder-blocks=ext-tsp --reorder-functions=hfsort+ \
  28 RUN:    --print-only=main --print-finalized | FileCheck %s
  29
  30 RUN: %t.bolted | FileCheck %s -check-prefix=CHECK-OUTPUT
  31
  32 CHECK-OUTPUT: The sum is: 30
  33
  34 # Check that our indirect call has 1 hit recorded in the fdata file and that
  35 # this was processed correctly by BOLT
  36 CHECK:         blr     x8 # CallProfile: 1 (0 misses) :
  37 CHECK-NEXT:    { add: 1 (0 misses) }
  38 */