llvm-6502/test/CodeGen/Thumb/segmented-stacks-dynamic.ll
Reid Kleckner bc1fd917f0 Move the segmented stack switch to a function attribute
This removes the -segmented-stacks command line flag in favor of a
per-function "split-stack" attribute.

Patch by Luqman Aden and Alex Crichton!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205997 91177308-0d34-0410-b5e6-96231b3b80d8
2014-04-10 22:58:43 +00:00

66 lines
1.9 KiB
LLVM

; RUN: llc < %s -mtriple=thumb-linux-unknown-gnueabi -verify-machineinstrs | FileCheck %s -check-prefix=Thumb-linux
; RUN: llc < %s -mtriple=thumb-linux-androideabi -verify-machineinstrs | FileCheck %s -check-prefix=Thumb-android
; RUN: llc < %s -mtriple=thumb-linux-unknown-gnueabi -filetype=obj
; RUN: llc < %s -mtriple=thumb-linux-androideabi -filetype=obj
; Just to prevent the alloca from being optimized away
declare void @dummy_use(i32*, i32)
define i32 @test_basic(i32 %l) #0 {
%mem = alloca i32, i32 %l
call void @dummy_use (i32* %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
; Thumb-linux: test_basic:
; Thumb-linux: push {r4, r5}
; Thumb-linux: mov r5, sp
; Thumb-linux-NEXT: ldr r4, .LCPI0_0
; Thumb-linux-NEXT: ldr r4, [r4]
; Thumb-linux-NEXT: cmp r4, r5
; Thumb-linux-NEXT: blo .LBB0_2
; Thumb-linux: mov r4, #16
; Thumb-linux-NEXT: mov r5, #0
; Thumb-linux-NEXT: push {lr}
; Thumb-linux-NEXT: bl __morestack
; Thumb-linux-NEXT: pop {r4}
; Thumb-linux-NEXT: mov lr, r4
; Thumb-linux-NEXT: pop {r4, r5}
; Thumb-linux-NEXT: bx lr
; Thumb-linux: pop {r4, r5}
; Thumb-android: test_basic:
; Thumb-android: push {r4, r5}
; Thumb-android: mov r5, sp
; Thumb-android-NEXT: ldr r4, .LCPI0_0
; Thumb-android-NEXT: ldr r4, [r4]
; Thumb-android-NEXT: cmp r4, r5
; Thumb-android-NEXT: blo .LBB0_2
; Thumb-android: mov r4, #16
; Thumb-android-NEXT: mov r5, #0
; Thumb-android-NEXT: push {lr}
; Thumb-android-NEXT: bl __morestack
; Thumb-android-NEXT: pop {r4}
; Thumb-android-NEXT: mov lr, r4
; Thumb-android-NEXT: pop {r4, r5}
; Thumb-android-NEXT: bx lr
; Thumb-android: pop {r4, r5}
}
attributes #0 = { "split-stack" }