| ; 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. |
| |
| ; TODO(kschimpf) Find out why lc2i is needed. |
| ; REQUIRES: allow_llvm_ir_as_input |
| ; RUN: %lc2i -i %s --args -Om1 --target=x8632 --verbose none \ |
| ; RUN: | llvm-mc -triple=i686-none-nacl -filetype=obj \ |
| ; RUN: | llvm-objdump -d --symbolize -x86-asm-syntax=intel - | FileCheck %s |
| |
| declare i32 @memcpy_helper2(i32 %buf, i32 %buf2, i32 %n) |
| |
| define i32 @memcpy_helper(i32 %buf, i32 %n) { |
| entry: |
| %n.arg_trunc = trunc i32 %n to i8 |
| %buf2 = alloca i8, i32 128, align 4 |
| %buf2.asint = ptrtoint i8* %buf2 to i32 |
| %arg_ext = zext i8 %n.arg_trunc 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, 24 |
| ; CHECK: mov eax, dword ptr [ebp + 12] |
| ; CHECK: mov dword ptr [ebp - 4], eax |
| ; CHECK: sub esp, 128 |
| ; CHECK: mov dword ptr [ebp - 8], esp |
| ; CHECK: mov eax, dword ptr [ebp - 8] |
| ; CHECK: mov dword ptr [ebp - 12], eax |
| ; CHECK: movzx eax, byte ptr [ebp - 4] |
| ; CHECK: mov dword ptr [ebp - 16], eax |
| ; CHECK: sub esp, 16 |
| ; CHECK: mov eax, dword ptr [ebp + 8] |
| ; CHECK: mov dword ptr [esp], eax |
| ; CHECK: mov eax, dword ptr [ebp - 12] |
| ; CHECK: mov dword ptr [esp + 4], eax |
| ; CHECK: mov eax, dword ptr [ebp - 16] |
| ; CHECK: mov dword ptr [esp + 8], eax |
| ; CHECK: call -4 |