1 ; RUN: llc -verify-machineinstrs -enable-machine-outliner %s -o - | FileCheck %s
2 ; RUN: llc -verify-machineinstrs -enable-machine-outliner -aarch64-redzone %s -o - | FileCheck %s -check-prefix=REDZONE
4 ; Ensure that the MachineOutliner does not fire on functions which use a
5 ; redzone. We don't care about what's actually outlined here. We just want to
6 ; force behaviour in the outliner to make sure that it never acts on anything
7 ; that might have a redzone.
8 target triple = "arm64----"
10 @x = common global i32 0, align 4
11 declare void @baz() #0
13 ; In AArch64FrameLowering, there are a couple special early exit cases where we
14 ; *know* we don't use a redzone. The GHC calling convention is one of these
15 ; cases. Make sure that we know we don't have a redzone even in these cases.
16 define cc 10 void @bar() #0 {
18 ; CHECK: bl OUTLINED_FUNCTION
20 ; REDZONE: bl OUTLINED_FUNCTION
21 %1 = load i32, ptr @x, align 4
22 %2 = add nsw i32 %1, 1
23 store i32 %2, ptr @x, align 4
25 %3 = load i32, ptr @x, align 4
26 %4 = add nsw i32 %3, 1
27 store i32 %4, ptr @x, align 4
29 %5 = load i32, ptr @x, align 4
30 %6 = add nsw i32 %5, 1
31 store i32 %6, ptr @x, align 4
35 ; foo() should have a redzone when compiled with -aarch64-redzone, and no
37 define void @foo() #0 {
39 ; CHECK: bl OUTLINED_FUNCTION
41 ; REDZONE-NOT: bl OUTLINED_FUNCTION
42 %1 = alloca i32, align 4
43 %2 = alloca i32, align 4
44 %3 = alloca i32, align 4
45 %4 = alloca i32, align 4
46 store i32 0, ptr %1, align 4
47 store i32 0, ptr %2, align 4
48 store i32 0, ptr %3, align 4
49 store i32 0, ptr %4, align 4
50 %5 = load i32, ptr %1, align 4
51 %6 = add nsw i32 %5, 1
52 store i32 %6, ptr %1, align 4
53 %7 = load i32, ptr %3, align 4
54 %8 = add nsw i32 %7, 1
55 store i32 %8, ptr %3, align 4
56 %9 = load i32, ptr %4, align 4
57 %10 = add nsw i32 %9, 1
58 store i32 %10, ptr %4, align 4
59 %11 = load i32, ptr %2, align 4
60 %12 = add nsw i32 %11, 1
61 store i32 %12, ptr %2, align 4
62 %13 = load i32, ptr %1, align 4
63 %14 = add nsw i32 %13, 1
64 store i32 %14, ptr %1, align 4
65 %15 = load i32, ptr %3, align 4
66 %16 = add nsw i32 %15, 1
67 store i32 %16, ptr %3, align 4
68 %17 = load i32, ptr %4, align 4
69 %18 = add nsw i32 %17, 1
70 store i32 %18, ptr %4, align 4
71 %19 = load i32, ptr %2, align 4
72 %20 = add nsw i32 %19, -1
73 store i32 %20, ptr %2, align 4
77 attributes #0 = { noinline nounwind optnone }