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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=thumb-linux-androideabi -mcpu=arm1156t2-s -mattr=+thumb2 -verify-machineinstrs | FileCheck %s -check-prefix=THUMB
; RUN: llc < %s -mtriple=arm-linux-androideabi -mcpu=arm1156t2-s -verify-machineinstrs | FileCheck %s -check-prefix=ARM
; Just to prevent the alloca from being optimized away
declare void @dummy_use(i32*, i32)
define void @test_basic() #0 {
; THUMB-LABEL: test_basic:
; THUMB: @ %bb.0:
; THUMB-NEXT: push {r4, r5}
; THUMB-NEXT: mrc p15, #0, r4, c13, c0, #3
; THUMB-NEXT: mov r5, sp
; THUMB-NEXT: ldr.w r4, [r4, #252]
; THUMB-NEXT: cmp r4, r5
; THUMB-NEXT: blo .LBB0_2
; THUMB-NEXT: @ %bb.1:
; THUMB-NEXT: mov r4, #48
; THUMB-NEXT: mov r5, #0
; THUMB-NEXT: push {lr}
; THUMB-NEXT: bl __morestack
; THUMB-NEXT: ldr lr, [sp], #4
; THUMB-NEXT: pop {r4, r5}
; THUMB-NEXT: bx lr
; THUMB-NEXT: .LBB0_2:
; THUMB-NEXT: pop {r4, r5}
; THUMB-NEXT: .save {r7, lr}
; THUMB-NEXT: push {r7, lr}
; THUMB-NEXT: .pad #40
; THUMB-NEXT: sub sp, #40
; THUMB-NEXT: mov r0, sp
; THUMB-NEXT: movs r1, #10
; THUMB-NEXT: bl dummy_use
; THUMB-NEXT: add sp, #40
; THUMB-NEXT: pop {r7, pc}
;
; ARM-LABEL: test_basic:
; ARM: @ %bb.0:
; ARM-NEXT: push {r4, r5}
; ARM-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-NEXT: mov r5, sp
; ARM-NEXT: ldr r4, [r4, #252]
; ARM-NEXT: cmp r4, r5
; ARM-NEXT: blo .LBB0_2
; ARM-NEXT: @ %bb.1:
; ARM-NEXT: mov r4, #48
; ARM-NEXT: mov r5, #0
; ARM-NEXT: stmdb sp!, {lr}
; ARM-NEXT: bl __morestack
; ARM-NEXT: ldm sp!, {lr}
; ARM-NEXT: pop {r4, r5}
; ARM-NEXT: bx lr
; ARM-NEXT: .LBB0_2:
; ARM-NEXT: pop {r4, r5}
; ARM-NEXT: .save {r11, lr}
; ARM-NEXT: push {r11, lr}
; ARM-NEXT: .pad #40
; ARM-NEXT: sub sp, sp, #40
; ARM-NEXT: mov r0, sp
; ARM-NEXT: mov r1, #10
; ARM-NEXT: bl dummy_use
; ARM-NEXT: add sp, sp, #40
; ARM-NEXT: pop {r11, pc}
%mem = alloca i32, i32 10
call void @dummy_use (i32* %mem, i32 10)
ret void
}
attributes #0 = { "split-stack" }
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