1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
; RUN: llc < %s -stack-symbol-ordering=0 -mcpu=generic -stackrealign -mattr=+avx -mtriple=x86_64-apple-darwin10 | FileCheck %s
; rdar://11496434
declare void @t1_helper(ptr)
declare void @t3_helper(ptr, ptr)
; Test when forcing stack alignment
define i32 @t8() nounwind uwtable {
entry:
%a = alloca i32, align 4
call void @t1_helper(ptr %a) nounwind
%0 = load i32, ptr %a, align 4
%add = add nsw i32 %0, 13
ret i32 %add
; CHECK: _t8
; CHECK: movq %rsp, %rbp
; CHECK: andq $-32, %rsp
; CHECK-NEXT: subq $32, %rsp
; CHECK: movq %rbp, %rsp
; CHECK: popq %rbp
}
; VLAs
define i32 @t9(i64 %sz) nounwind uwtable {
entry:
%a = alloca i32, align 4
%vla = alloca i32, i64 %sz, align 16
call void @t3_helper(ptr %a, ptr %vla) nounwind
%0 = load i32, ptr %a, align 4
%add = add nsw i32 %0, 13
ret i32 %add
; CHECK: _t9
; CHECK: pushq %rbp
; CHECK: movq %rsp, %rbp
; CHECK: pushq %rbx
; CHECK: andq $-32, %rsp
; CHECK: subq $32, %rsp
; CHECK: movq %rsp, %rbx
; CHECK: leaq -8(%rbp), %rsp
; CHECK: popq %rbx
; CHECK: popq %rbp
}
!llvm.module.flags = !{!0}
!0 = !{i32 2, !"override-stack-alignment", i32 32}
|
