clang/test/CodeGen/SystemZ/s390x-packed-struct-func-arg.c

   1 // RUN: %clang_cc1 -triple s390x-linux-gnu -target-cpu z13 -emit-llvm -o - %s \
   2 // RUN:     | FileCheck %s
   3
   4 struct S0 {
   5   long f1;
   6   int f2 : 4;
   7 } d;
   8
   9 #pragma pack(1)
  10 struct S1 {
  11   struct S0 S0_member;
  12 };
  13
  14 void f(struct S0 arg) {
  15   arg.f2 = 1;
  16 }
  17
  18 void g(void) {
  19   struct S1 g;
  20   // CHECK: alloca %struct.S0, align 8
  21   // CHECK: call void @llvm.memcpy.p0.p0.i64(ptr align 8 {{.*}}, ptr align 1 {{.*}}, i64 16
  22   f(g.S0_member);
  23 }