clang/test/CodeGen/fat-lto-objects-cfi.cpp

   1 // REQUIRES: x86-registered-target
   2
   3 // RUN: %clang_cc1 -triple x86_64-unknown-fuchsia -O2 -flto -ffat-lto-objects \
   4 // RUN:          -fsanitize=cfi-icall -fsanitize-trap=cfi-icall -fvisibility=hidden  -emit-llvm -o - %s \
   5 // RUN:   | FileCheck %s
   6
   7 // CHECK: llvm.embedded.object
   8 // CHECK-SAME: section ".llvm.lto"
   9
  10 // CHECK-LABEL: define hidden void @foo
  11 //      CHECK: entry:
  12 // CHECK-NEXT:   %cmp14.not = icmp eq i64 %len, 0
  13 // CHECK-NEXT:   br i1 %cmp14.not, label %for.end7, label %for.cond1.preheader.preheader
  14 //      CHECK: for.cond1.preheader.preheader:                    ; preds = %entry
  15 // CHECK-NEXT:   %arrayidx.1 = getelementptr inbounds nuw i8, ptr %ptr, i64 4
  16 // CHECK-NEXT:   br label %for.cond1.preheader
  17
  18 // CHECK-NOT: @llvm.type.test
  19
  20 // The code below is a reduced case from https://github.com/llvm/llvm-project/issues/112053
  21 #define __PRINTFLIKE(__fmt, __varargs) __attribute__((__format__(__printf__, __fmt, __varargs)))
  22 typedef void func(void* arg, const char* fmt, ...) __PRINTFLIKE(2, 3);
  23 typedef __SIZE_TYPE__ size_t;
  24 typedef unsigned long uintptr_t;
  25
  26 extern "C"
  27 void foo(const void* ptr, size_t len, long disp_addr,
  28                      func* printf_func, void* printf_arg) {
  29   uintptr_t address = (uintptr_t)ptr;
  30   size_t count;
  31
  32   for (count = 0; count < len; count += 16) {
  33     union {
  34       unsigned int buf[4];
  35       unsigned char cbuf[16];
  36     } u;
  37     size_t s = 10;
  38     size_t i;
  39
  40     for (i = 0; i < s / 4; i++) {
  41       u.buf[i] = ((const unsigned int*)address)[i];
  42       printf_func(printf_arg, "%08x ", static_cast<unsigned int>(u.buf[i]));
  43     }
  44   }
  45 }
  46