compiler-rt/test/xray/TestCases/Posix/custom-event-handler-alignment.cpp

   1 // Make sure we're aligning the stack properly when lowering the custom event
   2 // calls.
   3 //
   4 // RUN: %clangxx_xray -std=c++11 %s -o %t
   5 // RUN: XRAY_OPTIONS="patch_premain=false verbosity=1" \
   6 // RUN:     %run %t 2>&1
   7 // REQUIRES: x86_64-target-arch
   8 // REQUIRES: built-in-llvm-tree
   9 #include <xmmintrin.h>
  10 #include <stdio.h>
  11 #include "xray/xray_interface.h"
  12
  13 [[clang::xray_never_instrument]] __attribute__((weak)) __m128 f(__m128 *i) {
  14   return *i;
  15 }
  16
  17 [[clang::xray_always_instrument]] void foo() {
  18   __xray_customevent(0, 0);
  19   __m128 v = {};
  20   f(&v);
  21 }
  22
  23 [[clang::xray_always_instrument]] void bar() {
  24   __xray_customevent(0, 0);
  25 }
  26
  27 void printer(void* ptr, size_t size) {
  28   printf("handler called\n");
  29   __m128 v = {};
  30   f(&v);
  31 }
  32
  33 int main(int argc, char* argv[]) {
  34   __xray_set_customevent_handler(printer);
  35   __xray_patch();
  36   foo();  // CHECK: handler called
  37   bar();  // CHECK: handler called
  38   __xray_unpatch();
  39   __xray_remove_customevent_handler();
  40   foo();
  41   bar();
  42 }