llvm-project/llvm/test/CodeGen/Thumb2/segmented-stacks.ll

35 lines
1.1 KiB
LLVM

; RUN: llc < %s -mtriple=thumb-linux-androideabi -march=thumb -mcpu=arm1156t2-s -mattr=+thumb2 -verify-machineinstrs | FileCheck %s -check-prefix=Thumb-android
; RUN: llc < %s -mtriple=thumb-linux-androideabi -march=thumb -mcpu=arm1156t2-s -mattr=+thumb2 -filetype=obj
; Just to prevent the alloca from being optimized away
declare void @dummy_use(i32*, i32)
define void @test_basic() #0 {
%mem = alloca i32, i32 10
call void @dummy_use (i32* %mem, i32 10)
ret void
; Thumb-android: test_basic:
; Thumb-android: push {r4, r5}
; Thumb-android-NEXT: mrc p15, #0, r4, c13, c0, #3
; Thumb-android-NEXT: mov r5, sp
; Thumb-android-NEXT: ldr r4, [r4, #252]
; Thumb-android-NEXT: cmp r4, r5
; Thumb-android-NEXT: blo .LBB0_2
; Thumb-android: mov r4, #48
; Thumb-android-NEXT: mov r5, #0
; Thumb-android-NEXT: push {lr}
; Thumb-android-NEXT: bl __morestack
; Thumb-android-NEXT: ldr lr, [sp], #4
; Thumb-android-NEXT: pop {r4, r5}
; Thumb-android-NEXT: bx lr
; Thumb-android: pop {r4, r5}
}
attributes #0 = { "split-stack" }