clang/test/CodeGen/unaligned-struct-copy.c

   1 // RUN: %clang_cc1 -xc   -O2 -triple thumbv7a-unknown-windows-eabi -fms-extensions -emit-llvm < %s | FileCheck %s
   2 // RUN: %clang_cc1 -xc++ -O2 -triple thumbv7a-unknown-windows-eabi -fms-extensions -emit-llvm < %s | FileCheck %s
   3 // RUN: %clang_cc1 -xc   -O2 -triple x86_64-unknown-linux-gnu -fms-extensions -emit-llvm < %s | FileCheck %s
   4 // RUN: %clang_cc1 -xc++ -O2 -triple x86_64-unknown-linux-gnu -fms-extensions -emit-llvm < %s | FileCheck %s
   5
   6 struct S1 {
   7   unsigned long x;
   8 };
   9
  10 // CHECK: define
  11 // CHECK-SAME: void
  12 // CHECK-SAME: test1
  13
  14 void test1(__unaligned struct S1 *out) {
  15   // CHECK: store
  16   // CHECK-SAME: align 1
  17   out->x = 5;
  18   // CHECK: ret void
  19 }
  20
  21 // CHECK: define
  22 // CHECK-SAME: void
  23 // CHECK-SAME: test2
  24
  25 void test2(__unaligned struct S1 *out, __unaligned struct S1 *in) {
  26   // CHECK: load
  27   // CHECK-SAME: align 1
  28   // CHECK: store
  29   // CHECK-SAME: align 1
  30   *out = *in;
  31   // CHECK: ret void
  32 }