| ; This test originally exhibited a bug in ebp-based stack slots. The |
| ; problem was that during a function call push sequence, the esp |
| ; adjustment was incorrectly added to the stack/frame offset for |
| ; ebp-based frames. |
| |
| ; RUN: %p2i --filetype=obj --disassemble -i %s --args -Om1 \ |
| ; RUN: -allow-externally-defined-symbols | FileCheck %s |
| |
| declare i32 @memcpy_helper2(i32 %buf, i32 %buf2, i32 %n) |
| |
| define internal i32 @memcpy_helper(i32 %buf, i32 %n) { |
| entry: |
| br label %eblock ; Disable alloca optimization |
| eblock: |
| %buf2 = alloca i8, i32 128, align 4 |
| %n.arg_trunc = trunc i32 %n to i8 |
| %arg.ext = zext i8 %n.arg_trunc to i32 |
| %buf2.asint = ptrtoint i8* %buf2 to i32 |
| %call = call i32 @memcpy_helper2(i32 %buf, i32 %buf2.asint, i32 %arg.ext) |
| ret i32 %call |
| } |
| |
| ; This check sequence is highly specific to the current Om1 lowering |
| ; and stack slot assignment code, and may need to be relaxed if the |
| ; lowering code changes. |
| |
| ; CHECK-LABEL: memcpy_helper |
| ; CHECK: push ebp |
| ; CHECK: mov ebp,esp |
| ; CHECK: sub esp,0x28 |
| ; CHECK: sub esp,0x80 |
| ; CHECK: lea eax,[esp+0x10] |
| ; CHECK: mov DWORD PTR [ebp-0x4],eax |
| ; CHECK: mov eax,DWORD PTR [ebp+0xc] |
| ; CHECK: mov BYTE PTR [ebp-0x8],al |
| ; CHECK: movzx eax,BYTE PTR [ebp-0x8] |
| ; CHECK: mov DWORD PTR [ebp-0xc],eax |
| ; CHECK: mov eax,DWORD PTR [ebp+0x8] |
| ; CHECK: mov DWORD PTR [esp],eax |
| ; CHECK: mov eax,DWORD PTR [ebp-0x4] |
| ; CHECK: mov DWORD PTR [esp+0x4],eax |
| ; CHECK: mov eax,DWORD PTR [ebp-0xc] |
| ; CHECK: mov DWORD PTR [esp+0x8],eax |
| ; CHECK: call {{.*}} R_{{.*}} memcpy_helper2 |
