| ; RUN: llc < %s -mtriple=arm-linux-androideabi -mattr=+v4t -verify-machineinstrs | FileCheck %s -check-prefix=ARM-android |
| ; RUN: llc < %s -mtriple=arm-linux-unknown-gnueabi -mattr=+v4t -verify-machineinstrs | FileCheck %s -check-prefix=ARM-linux |
| ; RUN: llc < %s -mtriple=arm-linux-androideabi -mattr=+v4t -filetype=obj |
| ; RUN: llc < %s -mtriple=arm-linux-unknown-gnueabi -mattr=+v4t -filetype=obj |
| |
| ; Just to prevent the alloca from being optimized away |
| declare void @dummy_use(ptr, i32) |
| |
| define i32 @test_basic(i32 %l) #0 { |
| %mem = alloca i32, i32 %l |
| call void @dummy_use (ptr %mem, i32 %l) |
| %terminate = icmp eq i32 %l, 0 |
| br i1 %terminate, label %true, label %false |
| |
| true: |
| ret i32 0 |
| |
| false: |
| %newlen = sub i32 %l, 1 |
| %retvalue = call i32 @test_basic(i32 %newlen) |
| ret i32 %retvalue |
| |
| ; ARM-linux: test_basic: |
| |
| ; ARM-linux: push {r4, r5} |
| ; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3 |
| ; ARM-linux-NEXT: mov r5, sp |
| ; ARM-linux-NEXT: ldr r4, [r4, #4] |
| ; ARM-linux-NEXT: cmp r4, r5 |
| ; ARM-linux-NEXT: bls .LBB0_2 |
| |
| ; ARM-linux: mov r4, #16 |
| ; ARM-linux-NEXT: mov r5, #0 |
| ; ARM-linux-NEXT: stmdb sp!, {lr} |
| ; ARM-linux-NEXT: bl __morestack |
| ; ARM-linux-NEXT: ldm sp!, {lr} |
| ; ARM-linux-NEXT: pop {r4, r5} |
| ; ARM-linux-NEXT: bx lr |
| |
| ; ARM-linux: pop {r4, r5} |
| |
| |
| ; ARM-android: test_basic: |
| |
| ; ARM-android: push {r4, r5} |
| ; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3 |
| ; ARM-android-NEXT: mov r5, sp |
| ; ARM-android-NEXT: ldr r4, [r4, #252] |
| ; ARM-android-NEXT: cmp r4, r5 |
| ; ARM-android-NEXT: bls .LBB0_2 |
| |
| ; ARM-android: mov r4, #16 |
| ; ARM-android-NEXT: mov r5, #0 |
| ; ARM-android-NEXT: stmdb sp!, {lr} |
| ; ARM-android-NEXT: bl __morestack |
| ; ARM-android-NEXT: ldm sp!, {lr} |
| ; ARM-android-NEXT: pop {r4, r5} |
| ; ARM-android-NEXT: bx lr |
| |
| ; ARM-android: pop {r4, r5} |
| |
| } |
| |
| attributes #0 = { "split-stack" } |
