llvm-6502/test/CodeGen/X86/segmented-stacks.ll
Tim Northover de70176f5f Segmented stacks: omit __morestack call when there's no frame.
Patch by Florian Zeitz

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209436 91177308-0d34-0410-b5e6-96231b3b80d8
2014-05-22 13:03:43 +00:00

466 lines
13 KiB
LLVM

; RUN: llc < %s -mcpu=generic -mtriple=i686-linux -verify-machineinstrs | FileCheck %s -check-prefix=X32-Linux
; RUN: llc < %s -mcpu=generic -mtriple=x86_64-linux -verify-machineinstrs | FileCheck %s -check-prefix=X64-Linux
; RUN: llc < %s -mcpu=generic -mtriple=i686-darwin -verify-machineinstrs | FileCheck %s -check-prefix=X32-Darwin
; RUN: llc < %s -mcpu=generic -mtriple=x86_64-darwin -verify-machineinstrs | FileCheck %s -check-prefix=X64-Darwin
; RUN: llc < %s -mcpu=generic -mtriple=i686-mingw32 -verify-machineinstrs | FileCheck %s -check-prefix=X32-MinGW
; RUN: llc < %s -mcpu=generic -mtriple=x86_64-freebsd -verify-machineinstrs | FileCheck %s -check-prefix=X64-FreeBSD
; RUN: llc < %s -mcpu=generic -mtriple=x86_64-mingw32 -verify-machineinstrs | FileCheck %s -check-prefix=X64-MinGW
; We used to crash with filetype=obj
; RUN: llc < %s -mcpu=generic -mtriple=i686-linux -filetype=obj
; RUN: llc < %s -mcpu=generic -mtriple=x86_64-linux -filetype=obj
; RUN: llc < %s -mcpu=generic -mtriple=i686-darwin -filetype=obj
; RUN: llc < %s -mcpu=generic -mtriple=x86_64-darwin -filetype=obj
; RUN: llc < %s -mcpu=generic -mtriple=i686-mingw32 -filetype=obj
; RUN: llc < %s -mcpu=generic -mtriple=x86_64-freebsd -filetype=obj
; RUN: llc < %s -mcpu=generic -mtriple=x86_64-mingw32 -filetype=obj
; RUN: not llc < %s -mcpu=generic -mtriple=x86_64-solaris 2> %t.log
; RUN: FileCheck %s -input-file=%t.log -check-prefix=X64-Solaris
; RUN: not llc < %s -mcpu=generic -mtriple=i686-freebsd 2> %t.log
; RUN: FileCheck %s -input-file=%t.log -check-prefix=X32-FreeBSD
; X64-Solaris: Segmented stacks not supported on this platform
; X32-FreeBSD: Segmented stacks not supported on FreeBSD i386
; 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
; X32-Linux-LABEL: test_basic:
; X32-Linux: cmpl %gs:48, %esp
; X32-Linux-NEXT: ja .LBB0_2
; X32-Linux: pushl $0
; X32-Linux-NEXT: pushl $60
; X32-Linux-NEXT: calll __morestack
; X32-Linux-NEXT: ret
; X64-Linux-LABEL: test_basic:
; X64-Linux: cmpq %fs:112, %rsp
; X64-Linux-NEXT: ja .LBB0_2
; X64-Linux: movabsq $40, %r10
; X64-Linux-NEXT: movabsq $0, %r11
; X64-Linux-NEXT: callq __morestack
; X64-Linux-NEXT: ret
; X32-Darwin-LABEL: test_basic:
; X32-Darwin: movl $432, %ecx
; X32-Darwin-NEXT: cmpl %gs:(%ecx), %esp
; X32-Darwin-NEXT: ja LBB0_2
; X32-Darwin: pushl $0
; X32-Darwin-NEXT: pushl $60
; X32-Darwin-NEXT: calll ___morestack
; X32-Darwin-NEXT: ret
; X64-Darwin-LABEL: test_basic:
; X64-Darwin: cmpq %gs:816, %rsp
; X64-Darwin-NEXT: ja LBB0_2
; X64-Darwin: movabsq $40, %r10
; X64-Darwin-NEXT: movabsq $0, %r11
; X64-Darwin-NEXT: callq ___morestack
; X64-Darwin-NEXT: ret
; X32-MinGW-LABEL: test_basic:
; X32-MinGW: cmpl %fs:20, %esp
; X32-MinGW-NEXT: ja LBB0_2
; X32-MinGW: pushl $0
; X32-MinGW-NEXT: pushl $48
; X32-MinGW-NEXT: calll ___morestack
; X32-MinGW-NEXT: ret
; X64-MinGW-LABEL: test_basic:
; X64-MinGW: cmpq %gs:40, %rsp
; X64-MinGW-NEXT: ja .LBB0_2
; X64-MinGW: movabsq $72, %r10
; X64-MinGW-NEXT: movabsq $32, %r11
; X64-MinGW-NEXT: callq __morestack
; X64-MinGW-NEXT: retq
; X64-FreeBSD-LABEL: test_basic:
; X64-FreeBSD: cmpq %fs:24, %rsp
; X64-FreeBSD-NEXT: ja .LBB0_2
; X64-FreeBSD: movabsq $40, %r10
; X64-FreeBSD-NEXT: movabsq $0, %r11
; X64-FreeBSD-NEXT: callq __morestack
; X64-FreeBSD-NEXT: ret
}
define i32 @test_nested(i32 * nest %closure, i32 %other) #0 {
%addend = load i32 * %closure
%result = add i32 %other, %addend
%mem = alloca i32, i32 10
call void @dummy_use (i32* %mem, i32 10)
ret i32 %result
; X32-Linux: cmpl %gs:48, %esp
; X32-Linux-NEXT: ja .LBB1_2
; X32-Linux: pushl $4
; X32-Linux-NEXT: pushl $60
; X32-Linux-NEXT: calll __morestack
; X32-Linux-NEXT: ret
; X64-Linux: cmpq %fs:112, %rsp
; X64-Linux-NEXT: ja .LBB1_2
; X64-Linux: movq %r10, %rax
; X64-Linux-NEXT: movabsq $56, %r10
; X64-Linux-NEXT: movabsq $0, %r11
; X64-Linux-NEXT: callq __morestack
; X64-Linux-NEXT: ret
; X64-Linux-NEXT: movq %rax, %r10
; X32-Darwin: movl $432, %edx
; X32-Darwin-NEXT: cmpl %gs:(%edx), %esp
; X32-Darwin-NEXT: ja LBB1_2
; X32-Darwin: pushl $4
; X32-Darwin-NEXT: pushl $60
; X32-Darwin-NEXT: calll ___morestack
; X32-Darwin-NEXT: ret
; X64-Darwin: cmpq %gs:816, %rsp
; X64-Darwin-NEXT: ja LBB1_2
; X64-Darwin: movq %r10, %rax
; X64-Darwin-NEXT: movabsq $56, %r10
; X64-Darwin-NEXT: movabsq $0, %r11
; X64-Darwin-NEXT: callq ___morestack
; X64-Darwin-NEXT: ret
; X64-Darwin-NEXT: movq %rax, %r10
; X32-MinGW: cmpl %fs:20, %esp
; X32-MinGW-NEXT: ja LBB1_2
; X32-MinGW: pushl $4
; X32-MinGW-NEXT: pushl $52
; X32-MinGW-NEXT: calll ___morestack
; X32-MinGW-NEXT: ret
; X64-MinGW-LABEL: test_nested:
; X64-MinGW: cmpq %gs:40, %rsp
; X64-MinGW-NEXT: ja .LBB1_2
; X64-MinGW: movq %r10, %rax
; X64-MinGW-NEXT: movabsq $88, %r10
; X64-MinGW-NEXT: movabsq $32, %r11
; X64-MinGW-NEXT: callq __morestack
; X64-MinGW-NEXT: retq
; X64-MinGW-NEXT: movq %rax, %r10
; X64-FreeBSD: cmpq %fs:24, %rsp
; X64-FreeBSD-NEXT: ja .LBB1_2
; X64-FreeBSD: movq %r10, %rax
; X64-FreeBSD-NEXT: movabsq $56, %r10
; X64-FreeBSD-NEXT: movabsq $0, %r11
; X64-FreeBSD-NEXT: callq __morestack
; X64-FreeBSD-NEXT: ret
; X64-FreeBSD-NEXT: movq %rax, %r10
}
define void @test_large() #0 {
%mem = alloca i32, i32 10000
call void @dummy_use (i32* %mem, i32 0)
ret void
; X32-Linux: leal -40012(%esp), %ecx
; X32-Linux-NEXT: cmpl %gs:48, %ecx
; X32-Linux-NEXT: ja .LBB2_2
; X32-Linux: pushl $0
; X32-Linux-NEXT: pushl $40012
; X32-Linux-NEXT: calll __morestack
; X32-Linux-NEXT: ret
; X64-Linux: leaq -40008(%rsp), %r11
; X64-Linux-NEXT: cmpq %fs:112, %r11
; X64-Linux-NEXT: ja .LBB2_2
; X64-Linux: movabsq $40008, %r10
; X64-Linux-NEXT: movabsq $0, %r11
; X64-Linux-NEXT: callq __morestack
; X64-Linux-NEXT: ret
; X32-Darwin: leal -40012(%esp), %ecx
; X32-Darwin-NEXT: movl $432, %eax
; X32-Darwin-NEXT: cmpl %gs:(%eax), %ecx
; X32-Darwin-NEXT: ja LBB2_2
; X32-Darwin: pushl $0
; X32-Darwin-NEXT: pushl $40012
; X32-Darwin-NEXT: calll ___morestack
; X32-Darwin-NEXT: ret
; X64-Darwin: leaq -40008(%rsp), %r11
; X64-Darwin-NEXT: cmpq %gs:816, %r11
; X64-Darwin-NEXT: ja LBB2_2
; X64-Darwin: movabsq $40008, %r10
; X64-Darwin-NEXT: movabsq $0, %r11
; X64-Darwin-NEXT: callq ___morestack
; X64-Darwin-NEXT: ret
; X32-MinGW: leal -40008(%esp), %ecx
; X32-MinGW-NEXT: cmpl %fs:20, %ecx
; X32-MinGW-NEXT: ja LBB2_2
; X32-MinGW: pushl $0
; X32-MinGW-NEXT: pushl $40008
; X32-MinGW-NEXT: calll ___morestack
; X32-MinGW-NEXT: ret
; X64-MinGW-LABEL: test_large:
; X64-MinGW: leaq -40040(%rsp), %r11
; X64-MinGW-NEXT: cmpq %gs:40, %r11
; X64-MinGW-NEXT: ja .LBB2_2
; X64-MinGW: movabsq $40040, %r10
; X64-MinGW-NEXT: movabsq $32, %r11
; X64-MinGW-NEXT: callq __morestack
; X64-MinGW-NEXT: retq
; X64-FreeBSD: leaq -40008(%rsp), %r11
; X64-FreeBSD-NEXT: cmpq %fs:24, %r11
; X64-FreeBSD-NEXT: ja .LBB2_2
; X64-FreeBSD: movabsq $40008, %r10
; X64-FreeBSD-NEXT: movabsq $0, %r11
; X64-FreeBSD-NEXT: callq __morestack
; X64-FreeBSD-NEXT: ret
}
define fastcc void @test_fastcc() #0 {
%mem = alloca i32, i32 10
call void @dummy_use (i32* %mem, i32 10)
ret void
; X32-Linux-LABEL: test_fastcc:
; X32-Linux: cmpl %gs:48, %esp
; X32-Linux-NEXT: ja .LBB3_2
; X32-Linux: pushl $0
; X32-Linux-NEXT: pushl $60
; X32-Linux-NEXT: calll __morestack
; X32-Linux-NEXT: ret
; X64-Linux-LABEL: test_fastcc:
; X64-Linux: cmpq %fs:112, %rsp
; X64-Linux-NEXT: ja .LBB3_2
; X64-Linux: movabsq $40, %r10
; X64-Linux-NEXT: movabsq $0, %r11
; X64-Linux-NEXT: callq __morestack
; X64-Linux-NEXT: ret
; X32-Darwin-LABEL: test_fastcc:
; X32-Darwin: movl $432, %eax
; X32-Darwin-NEXT: cmpl %gs:(%eax), %esp
; X32-Darwin-NEXT: ja LBB3_2
; X32-Darwin: pushl $0
; X32-Darwin-NEXT: pushl $60
; X32-Darwin-NEXT: calll ___morestack
; X32-Darwin-NEXT: ret
; X64-Darwin-LABEL: test_fastcc:
; X64-Darwin: cmpq %gs:816, %rsp
; X64-Darwin-NEXT: ja LBB3_2
; X64-Darwin: movabsq $40, %r10
; X64-Darwin-NEXT: movabsq $0, %r11
; X64-Darwin-NEXT: callq ___morestack
; X64-Darwin-NEXT: ret
; X32-MinGW-LABEL: test_fastcc:
; X32-MinGW: cmpl %fs:20, %esp
; X32-MinGW-NEXT: ja LBB3_2
; X32-MinGW: pushl $0
; X32-MinGW-NEXT: pushl $48
; X32-MinGW-NEXT: calll ___morestack
; X32-MinGW-NEXT: ret
; X64-MinGW-LABEL: test_fastcc:
; X64-MinGW: cmpq %gs:40, %rsp
; X64-MinGW-NEXT: ja .LBB3_2
; X64-MinGW: movabsq $72, %r10
; X64-MinGW-NEXT: movabsq $32, %r11
; X64-MinGW-NEXT: callq __morestack
; X64-MinGW-NEXT: retq
; X64-FreeBSD-LABEL: test_fastcc:
; X64-FreeBSD: cmpq %fs:24, %rsp
; X64-FreeBSD-NEXT: ja .LBB3_2
; X64-FreeBSD: movabsq $40, %r10
; X64-FreeBSD-NEXT: movabsq $0, %r11
; X64-FreeBSD-NEXT: callq __morestack
; X64-FreeBSD-NEXT: ret
}
define fastcc void @test_fastcc_large() #0 {
%mem = alloca i32, i32 10000
call void @dummy_use (i32* %mem, i32 0)
ret void
; X32-Linux-LABEL: test_fastcc_large:
; X32-Linux: leal -40012(%esp), %eax
; X32-Linux-NEXT: cmpl %gs:48, %eax
; X32-Linux-NEXT: ja .LBB4_2
; X32-Linux: pushl $0
; X32-Linux-NEXT: pushl $40012
; X32-Linux-NEXT: calll __morestack
; X32-Linux-NEXT: ret
; X64-Linux-LABEL: test_fastcc_large:
; X64-Linux: leaq -40008(%rsp), %r11
; X64-Linux-NEXT: cmpq %fs:112, %r11
; X64-Linux-NEXT: ja .LBB4_2
; X64-Linux: movabsq $40008, %r10
; X64-Linux-NEXT: movabsq $0, %r11
; X64-Linux-NEXT: callq __morestack
; X64-Linux-NEXT: ret
; X32-Darwin-LABEL: test_fastcc_large:
; X32-Darwin: leal -40012(%esp), %eax
; X32-Darwin-NEXT: movl $432, %ecx
; X32-Darwin-NEXT: cmpl %gs:(%ecx), %eax
; X32-Darwin-NEXT: ja LBB4_2
; X32-Darwin: pushl $0
; X32-Darwin-NEXT: pushl $40012
; X32-Darwin-NEXT: calll ___morestack
; X32-Darwin-NEXT: ret
; X64-Darwin-LABEL: test_fastcc_large:
; X64-Darwin: leaq -40008(%rsp), %r11
; X64-Darwin-NEXT: cmpq %gs:816, %r11
; X64-Darwin-NEXT: ja LBB4_2
; X64-Darwin: movabsq $40008, %r10
; X64-Darwin-NEXT: movabsq $0, %r11
; X64-Darwin-NEXT: callq ___morestack
; X64-Darwin-NEXT: ret
; X32-MinGW-LABEL: test_fastcc_large:
; X32-MinGW: leal -40008(%esp), %eax
; X32-MinGW-NEXT: cmpl %fs:20, %eax
; X32-MinGW-NEXT: ja LBB4_2
; X32-MinGW: pushl $0
; X32-MinGW-NEXT: pushl $40008
; X32-MinGW-NEXT: calll ___morestack
; X32-MinGW-NEXT: ret
; X64-MinGW-LABEL: test_fastcc_large:
; X64-MinGW: leaq -40040(%rsp), %r11
; X64-MinGW-NEXT: cmpq %gs:40, %r11
; X64-MinGW-NEXT: ja .LBB4_2
; X64-MinGW: movabsq $40040, %r10
; X64-MinGW-NEXT: movabsq $32, %r11
; X64-MinGW-NEXT: callq __morestack
; X64-MinGW-NEXT: retq
; X64-FreeBSD-LABEL: test_fastcc_large:
; X64-FreeBSD: leaq -40008(%rsp), %r11
; X64-FreeBSD-NEXT: cmpq %fs:24, %r11
; X64-FreeBSD-NEXT: ja .LBB4_2
; X64-FreeBSD: movabsq $40008, %r10
; X64-FreeBSD-NEXT: movabsq $0, %r11
; X64-FreeBSD-NEXT: callq __morestack
; X64-FreeBSD-NEXT: ret
}
define fastcc void @test_fastcc_large_with_ecx_arg(i32 %a) #0 {
%mem = alloca i32, i32 10000
call void @dummy_use (i32* %mem, i32 %a)
ret void
; This is testing that the Mac implementation preserves ecx
; X32-Darwin-LABEL: test_fastcc_large_with_ecx_arg:
; X32-Darwin: leal -40012(%esp), %eax
; X32-Darwin-NEXT: pushl %ecx
; X32-Darwin-NEXT: movl $432, %ecx
; X32-Darwin-NEXT: cmpl %gs:(%ecx), %eax
; X32-Darwin-NEXT: popl %ecx
; X32-Darwin-NEXT: ja LBB5_2
; X32-Darwin: pushl $0
; X32-Darwin-NEXT: pushl $40012
; X32-Darwin-NEXT: calll ___morestack
; X32-Darwin-NEXT: ret
}
define void @test_nostack() #0 {
ret void
; X32-Linux-LABEL: test_nostack:
; X32-Linux-NOT: calll __morestack
; X64-Linux-LABEL: test_nostack:
; X32-Linux-NOT: callq __morestack
; X32-Darwin-LABEL: test_nostack:
; X32-Darwin-NOT: calll __morestack
; X64-Darwin-LABEL: test_nostack:
; X64-Darwin-NOT: callq __morestack
; X32-MinGW-LABEL: test_nostack:
; X32-MinGW-NOT: calll __morestack
; X64-MinGW-LABEL: test_nostack:
; X64-MinGW-NOT: callq __morestack
; X64-FreeBSD-LABEL: test_nostack:
; X64-FreeBSD-NOT: callq __morestack
}
attributes #0 = { "split-stack" }