1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -mtriple=x86_64-pc-linux -stackrealign < %s | FileCheck %s
3 ; RUN: llc -mtriple=x86_64-pc-linux-gnux32 -stackrealign < %s | FileCheck -check-prefix=X32ABI %s
5 ; This should run with NaCl as well ( -mtriple=x86_64-pc-nacl ) but currently doesn't due to PR22655
7 ; Make sure the correct register gets set up as the base pointer
8 ; This should be rbx for x64 and 64-bit NaCl and ebx for x32
10 ; NACL: subq $32, %rsp
11 ; NACL: movq %rsp, %rbx
13 declare i32 @helper() nounwind
14 define void @base() #0 {
16 ; CHECK: # %bb.0: # %entry
17 ; CHECK-NEXT: pushq %rbp
18 ; CHECK-NEXT: movq %rsp, %rbp
19 ; CHECK-NEXT: pushq %rbx
20 ; CHECK-NEXT: andq $-32, %rsp
21 ; CHECK-NEXT: subq $32, %rsp
22 ; CHECK-NEXT: movq %rsp, %rbx
23 ; CHECK-NEXT: callq helper@PLT
24 ; CHECK-NEXT: movq %rsp, %rcx
25 ; CHECK-NEXT: movl %eax, %eax
26 ; CHECK-NEXT: leaq 31(,%rax,4), %rax
27 ; CHECK-NEXT: andq $-32, %rax
28 ; CHECK-NEXT: movq %rcx, %rdx
29 ; CHECK-NEXT: subq %rax, %rdx
30 ; CHECK-NEXT: movq %rdx, %rsp
31 ; CHECK-NEXT: negq %rax
32 ; CHECK-NEXT: movl $0, (%rcx,%rax)
33 ; CHECK-NEXT: leaq -8(%rbp), %rsp
34 ; CHECK-NEXT: popq %rbx
35 ; CHECK-NEXT: popq %rbp
39 ; X32ABI: # %bb.0: # %entry
40 ; X32ABI-NEXT: pushq %rbp
41 ; X32ABI-NEXT: movl %esp, %ebp
42 ; X32ABI-NEXT: pushq %rbx
43 ; X32ABI-NEXT: andl $-32, %esp
44 ; X32ABI-NEXT: subl $32, %esp
45 ; X32ABI-NEXT: movl %esp, %ebx
46 ; X32ABI-NEXT: callq helper@PLT
47 ; X32ABI-NEXT: # kill: def $eax killed $eax def $rax
48 ; X32ABI-NEXT: leal 31(,%rax,4), %eax
49 ; X32ABI-NEXT: andl $-32, %eax
50 ; X32ABI-NEXT: movl %esp, %ecx
51 ; X32ABI-NEXT: movl %ecx, %edx
52 ; X32ABI-NEXT: subl %eax, %edx
53 ; X32ABI-NEXT: negl %eax
54 ; X32ABI-NEXT: movl %edx, %esp
55 ; X32ABI-NEXT: movl $0, (%ecx,%eax)
56 ; X32ABI-NEXT: leal -8(%ebp), %esp
57 ; X32ABI-NEXT: popq %rbx
58 ; X32ABI-NEXT: popq %rbp
61 %k = call i32 @helper()
62 %a = alloca i32, i32 %k, align 4
63 store i32 0, ptr %a, align 4
67 attributes #0 = { nounwind "frame-pointer"="all"}
68 !llvm.module.flags = !{!0}
69 !0 = !{i32 2, !"override-stack-alignment", i32 32}