mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-29 10:32:47 +00:00
bc1fd917f0
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
66 lines
1.9 KiB
LLVM
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" }
|