mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-15 04:30:12 +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
67 lines
1.7 KiB
LLVM
67 lines
1.7 KiB
LLVM
; RUN: llc < %s -mcpu=generic -mtriple=i686-linux -verify-machineinstrs | FileCheck %s -check-prefix=X32
|
|
; RUN: llc < %s -mcpu=generic -mtriple=x86_64-linux -verify-machineinstrs | FileCheck %s -check-prefix=X64
|
|
; RUN: llc < %s -mcpu=generic -mtriple=i686-linux -filetype=obj
|
|
; RUN: llc < %s -mcpu=generic -mtriple=x86_64-linux -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
|
|
|
|
; X32-LABEL: test_basic:
|
|
|
|
; X32: cmpl %gs:48, %esp
|
|
; X32-NEXT: ja .LBB0_2
|
|
|
|
; X32: pushl $4
|
|
; X32-NEXT: pushl $12
|
|
; X32-NEXT: calll __morestack
|
|
; X32-NEXT: ret
|
|
|
|
; X32: movl %esp, %eax
|
|
; X32: subl %ecx, %eax
|
|
; X32-NEXT: cmpl %eax, %gs:48
|
|
|
|
; X32: movl %eax, %esp
|
|
|
|
; X32: subl $12, %esp
|
|
; X32-NEXT: pushl %ecx
|
|
; X32-NEXT: calll __morestack_allocate_stack_space
|
|
; X32-NEXT: addl $16, %esp
|
|
|
|
; X64-LABEL: test_basic:
|
|
|
|
; X64: cmpq %fs:112, %rsp
|
|
; X64-NEXT: ja .LBB0_2
|
|
|
|
; X64: movabsq $24, %r10
|
|
; X64-NEXT: movabsq $0, %r11
|
|
; X64-NEXT: callq __morestack
|
|
; X64-NEXT: ret
|
|
|
|
; X64: movq %rsp, %[[RDI:rdi|rax]]
|
|
; X64: subq %{{.*}}, %[[RDI]]
|
|
; X64-NEXT: cmpq %[[RDI]], %fs:112
|
|
|
|
; X64: movq %[[RDI]], %rsp
|
|
|
|
; X64: movq %{{.*}}, %rdi
|
|
; X64-NEXT: callq __morestack_allocate_stack_space
|
|
; X64: movq %rax, %rdi
|
|
|
|
}
|
|
|
|
attributes #0 = { "split-stack" }
|