; 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
; We used to crash with filetype=obj
; RUN: llc < %s -mtriple=arm-linux-androideabi -filetype=obj
; RUN: llc < %s -mtriple=arm-linux-unknown-gnueabi -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
; ARM-linux-LABEL: 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: blo .LBB0_2
; ARM-linux: mov r4, #48
; 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-LABEL: 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: blo .LBB0_2
; ARM-android: mov r4, #48
; 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}
}
define i32 @test_nested(i32 * nest %closure, i32 %other) #0 {
%addend = load i32 , i32 * %closure
%result = add i32 %other, %addend
%mem = alloca i32, i32 10
call void @dummy_use (i32* %mem, i32 10)
ret i32 %result
; ARM-linux-LABEL: test_nested:
; 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: blo .LBB1_2
; ARM-linux: mov r4, #56
; 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-LABEL: test_nested:
; 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: blo .LBB1_2
; ARM-android: mov r4, #56
; 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}
}
define void @test_large() #0 {
%mem = alloca i32, i32 10000
call void @dummy_use (i32* %mem, i32 0)
ret void
; ARM-linux-LABEL: test_large:
; ARM-linux: push {r4, r5}
; ARM-linux-NEXT: ldr r4, .LCPI2_0
; ARM-linux-NEXT: sub r5, sp, r4
; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-linux-NEXT: ldr r4, [r4, #4]
; ARM-linux-NEXT: cmp r4, r5
; ARM-linux-NEXT: blo .LBB2_2
; ARM-linux: ldr r4, .LCPI2_0
; 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-linux: .LCPI2_0:
; ARM-linux-NEXT: .long 40192
; ARM-android-LABEL: test_large:
; ARM-android: push {r4, r5}
; ARM-android-NEXT: ldr r4, .LCPI2_0
; ARM-android-NEXT: sub r5, sp, r4
; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-android-NEXT: ldr r4, [r4, #252]
; ARM-android-NEXT: cmp r4, r5
; ARM-android-NEXT: blo .LBB2_2
; ARM-android: ldr r4, .LCPI2_0
; 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}
; ARM-android: .LCPI2_0:
; ARM-android-NEXT: .long 40192
}
define fastcc void @test_fastcc() #0 {
%mem = alloca i32, i32 10
call void @dummy_use (i32* %mem, i32 10)
ret void
; ARM-linux-LABEL: test_fastcc:
; 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: blo .LBB3_2
; ARM-linux: mov r4, #48
; 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-LABEL: test_fastcc:
; 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: blo .LBB3_2
; ARM-android: mov r4, #48
; 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}
}
define fastcc void @test_fastcc_large() #0 {
%mem = alloca i32, i32 10000
call void @dummy_use (i32* %mem, i32 0)
ret void
; ARM-linux-LABEL: test_fastcc_large:
; ARM-linux: push {r4, r5}
; ARM-linux-NEXT: ldr r4, .LCPI4_0
; ARM-linux-NEXT: sub r5, sp, r4
; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-linux-NEXT: ldr r4, [r4, #4]
; ARM-linux-NEXT: cmp r4, r5
; ARM-linux-NEXT: blo .LBB4_2
; ARM-linux: ldr r4, .LCPI4_0
; 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-linux: .LCPI4_0:
; ARM-linux-NEXT: .long 40192
; ARM-android-LABEL: test_fastcc_large:
; ARM-android: push {r4, r5}
; ARM-android-NEXT: ldr r4, .LCPI4_0
; ARM-android-NEXT: sub r5, sp, r4
; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3
; ARM-android-NEXT: ldr r4, [r4, #252]
; ARM-android-NEXT: cmp r4, r5
; ARM-android-NEXT: blo .LBB4_2
; ARM-android: ldr r4, .LCPI4_0
; 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}
; ARM-android: .LCPI4_0:
; ARM-android-NEXT: .long 40192
}
define void @test_nostack() #0 {
ret void
; ARM-linux-LABEL: test_nostack:
; ARM-linux-NOT: bl __morestack
; ARM-android-LABEL: test_nostack:
; ARM-android-NOT: bl __morestack
}
; Test to make sure that a morestack call is generated if there is a
; sibling call, even if the function in question has no stack frame
; (PR37807).
declare i32 @callee(i32)
define i32 @test_sibling_call_empty_frame(i32 %x) #0 {
%call = tail call i32 @callee(i32 %x) #0
ret i32 %call
; ARM-linux-LABEL: test_sibling_call_empty_frame:
; ARM-linux: bl __morestack
; ARM-android-LABEL: test_sibling_call_empty_frame:
; ARM-android: bl __morestack
}
declare void @panic() unnamed_addr
; We used to crash while compiling the following function.
; ARM-linux-LABEL: build_should_not_segfault:
; ARM-android-LABEL: build_should_not_segfault:
define void @build_should_not_segfault(i8 %x) unnamed_addr #0 {
start:
%_0 = icmp ult i8 %x, 16
%or.cond = select i1 undef, i1 true, i1 %_0
br i1 %or.cond, label %bb1, label %bb2
bb1:
ret void
bb2:
call void @panic()
unreachable
}
attributes #0 = { "split-stack" }