llvm-project/llvm/test/FrontendC/2007-07-29-RestrictPtrArg.c

// RUN: %llvmgcc -c -emit-llvm %s -o - | llvm-dis | grep noalias

void foo(int * __restrict myptr1, int * myptr2) {
  myptr1[0] = 0;
  myptr2[0] = 0;
}