xref: /aosp_15_r20/external/llvm/test/CodeGen/Thumb2/segmented-stacks.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=thumb-linux-androideabi -march=thumb -mcpu=arm1156t2-s -mattr=+thumb2 -verify-machineinstrs | FileCheck %s -check-prefix=Thumb-android
2*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=thumb-linux-androideabi -march=thumb -mcpu=arm1156t2-s -mattr=+thumb2 -filetype=obj
3*9880d681SAndroid Build Coastguard Worker
4*9880d681SAndroid Build Coastguard Worker
5*9880d681SAndroid Build Coastguard Worker; Just to prevent the alloca from being optimized away
6*9880d681SAndroid Build Coastguard Workerdeclare void @dummy_use(i32*, i32)
7*9880d681SAndroid Build Coastguard Worker
8*9880d681SAndroid Build Coastguard Workerdefine void @test_basic() #0 {
9*9880d681SAndroid Build Coastguard Worker        %mem = alloca i32, i32 10
10*9880d681SAndroid Build Coastguard Worker        call void @dummy_use (i32* %mem, i32 10)
11*9880d681SAndroid Build Coastguard Worker	ret void
12*9880d681SAndroid Build Coastguard Worker
13*9880d681SAndroid Build Coastguard Worker; Thumb-android:      test_basic:
14*9880d681SAndroid Build Coastguard Worker
15*9880d681SAndroid Build Coastguard Worker; Thumb-android:      push    {r4, r5}
16*9880d681SAndroid Build Coastguard Worker; Thumb-android-NEXT: mrc     p15, #0, r4, c13, c0, #3
17*9880d681SAndroid Build Coastguard Worker; Thumb-android-NEXT: mov     r5, sp
18*9880d681SAndroid Build Coastguard Worker; Thumb-android-NEXT: ldr     r4, [r4, #252]
19*9880d681SAndroid Build Coastguard Worker; Thumb-android-NEXT: cmp     r4, r5
20*9880d681SAndroid Build Coastguard Worker; Thumb-android-NEXT: blo     .LBB0_2
21*9880d681SAndroid Build Coastguard Worker
22*9880d681SAndroid Build Coastguard Worker; Thumb-android:      mov     r4, #48
23*9880d681SAndroid Build Coastguard Worker; Thumb-android-NEXT: mov     r5, #0
24*9880d681SAndroid Build Coastguard Worker; Thumb-android-NEXT: push    {lr}
25*9880d681SAndroid Build Coastguard Worker; Thumb-android-NEXT: bl      __morestack
26*9880d681SAndroid Build Coastguard Worker; Thumb-android-NEXT: ldr     lr, [sp], #4
27*9880d681SAndroid Build Coastguard Worker; Thumb-android-NEXT: pop     {r4, r5}
28*9880d681SAndroid Build Coastguard Worker; Thumb-android-NEXT: bx      lr
29*9880d681SAndroid Build Coastguard Worker
30*9880d681SAndroid Build Coastguard Worker; Thumb-android:      pop     {r4, r5}
31*9880d681SAndroid Build Coastguard Worker
32*9880d681SAndroid Build Coastguard Worker}
33*9880d681SAndroid Build Coastguard Worker
34*9880d681SAndroid Build Coastguard Workerattributes #0 = { "split-stack" }
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