clang/test/CodeGen/indirect-noundef.cpp

   1 // RUN: %clang_cc1 -x c++ -triple x86_64-unknown-unknown -O0 -emit-llvm -o - %s | FileCheck %s
   2 // RUN: %clang_cc1 -x c++ -triple x86_64-unknown-unknown -O0 -emit-llvm -fsanitize-memory-param-retval -o - %s | FileCheck %s
   3
   4 // no-sanitize-memory-param-retval does NOT conflict with enable-noundef-analysis
   5 // RUN: %clang_cc1 -x c++ -triple x86_64-unknown-unknown -O0 -emit-llvm -fno-sanitize-memory-param-retval -o - %s | FileCheck %s
   6
   7 union u1 {
   8   int val;
   9 };
  10
  11 // CHECK: @indirect_callee_int_ptr = [[GLOBAL:(dso_local )?global]] ptr
  12 int (*indirect_callee_int_ptr)(int);
  13 // CHECK: @indirect_callee_union_ptr = [[GLOBAL]] ptr
  14 union u1 (*indirect_callee_union_ptr)(union u1);
  15
  16 // CHECK: [[DEF:define( dso_local)?]] noundef i32 @{{.*}}indirect_callee_int{{.*}}(i32 noundef %
  17 int indirect_callee_int(int a) { return a; }
  18 // CHECK: [[DEF]] i32 @{{.*}}indirect_callee_union{{.*}}(i32 %
  19 union u1 indirect_callee_union(union u1 a) {
  20   return a;
  21 }
  22
  23 int main() {
  24   // CHECK: call noundef i32 @{{.*}}indirect_callee_int{{.*}}(i32 noundef 0)
  25   indirect_callee_int(0);
  26   // CHECK: call i32 @{{.*}}indirect_callee_union{{.*}}(i32 %
  27   indirect_callee_union((union u1){0});
  28
  29   indirect_callee_int_ptr = indirect_callee_int;
  30   indirect_callee_union_ptr = indirect_callee_union;
  31
  32   // CHECK: call noundef i32 %{{.*}}(i32 noundef 0)
  33   indirect_callee_int_ptr(0);
  34   // CHECK: call i32 %{{.*}}(i32 %
  35   indirect_callee_union_ptr((union u1){});
  36
  37   return 0;
  38 }