clang/test/CodeGen/clear_cache.c

   1 // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
   2 // RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm %s -o - | FileCheck %s
   3
   4 char buffer[32] = "This is a largely unused buffer";
   5
   6 // __builtin___clear_cache always maps to @llvm.clear_cache, but what
   7 // each back-end produces is different, and this is tested in LLVM
   8
   9 // CHECK-LABEL: define {{[^@]+}}@main(
  10 // CHECK-NEXT:  entry:
  11 // CHECK-NEXT:    [[RETVAL:%.*]] = alloca i32, align 4
  12 // CHECK-NEXT:    store i32 0, ptr [[RETVAL]], align 4
  13 // CHECK-NEXT:    call void @llvm.clear_cache(ptr @buffer, ptr getelementptr inbounds (i8, ptr @buffer, i64 32))
  14 // CHECK-NEXT:    ret i32 0
  15 //
  16 int main(void) {
  17   __builtin___clear_cache(buffer, buffer+32);
  18   return 0;
  19 }