| ; 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" } |