--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/CodeGen/X86/segmented-stacks.ll	Thu Dec 12 13:56:28 2013 +0900
@@ -0,0 +1,385 @@
+; RUN: llc < %s -mcpu=generic -mtriple=i686-linux -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=X32-Linux
+; RUN: llc < %s -mcpu=generic -mtriple=x86_64-linux  -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=X64-Linux
+; RUN: llc < %s -mcpu=generic -mtriple=i686-darwin -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=X32-Darwin
+; RUN: llc < %s -mcpu=generic -mtriple=x86_64-darwin -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=X64-Darwin
+; RUN: llc < %s -mcpu=generic -mtriple=i686-mingw32 -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=X32-MinGW
+; RUN: llc < %s -mcpu=generic -mtriple=x86_64-freebsd -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=X64-FreeBSD
+
+; We used to crash with filetype=obj
+; RUN: llc < %s -mcpu=generic -mtriple=i686-linux -segmented-stacks -filetype=obj
+; RUN: llc < %s -mcpu=generic -mtriple=x86_64-linux -segmented-stacks -filetype=obj
+; RUN: llc < %s -mcpu=generic -mtriple=i686-darwin -segmented-stacks -filetype=obj
+; RUN: llc < %s -mcpu=generic -mtriple=x86_64-darwin -segmented-stacks -filetype=obj
+; RUN: llc < %s -mcpu=generic -mtriple=i686-mingw32 -segmented-stacks -filetype=obj
+; RUN: llc < %s -mcpu=generic -mtriple=x86_64-freebsd -segmented-stacks -filetype=obj
+
+; RUN: not llc < %s -mcpu=generic -mtriple=x86_64-solaris -segmented-stacks 2> %t.log
+; RUN: FileCheck %s -input-file=%t.log -check-prefix=X64-Solaris
+; RUN: not llc < %s -mcpu=generic -mtriple=x86_64-mingw32 -segmented-stacks 2> %t.log
+; RUN: FileCheck %s -input-file=%t.log -check-prefix=X64-MinGW
+; RUN: not llc < %s -mcpu=generic -mtriple=i686-freebsd -segmented-stacks 2> %t.log
+; RUN: FileCheck %s -input-file=%t.log -check-prefix=X32-FreeBSD
+
+; X64-Solaris: Segmented stacks not supported on this platform
+; X64-MinGW: 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() {
+        %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-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) {
+       %addend = load i32 * %closure
+       %result = add i32 %other, %addend
+       ret i32 %result
+
+; X32-Linux:       cmpl %gs:48, %esp
+; X32-Linux-NEXT:  ja      .LBB1_2
+
+; X32-Linux:       pushl $4
+; X32-Linux-NEXT:  pushl $0
+; 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 $0, %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 $0
+; 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 $0, %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 $0
+; X32-MinGW-NEXT:  calll ___morestack
+; X32-MinGW-NEXT:  ret
+
+; X64-FreeBSD:       cmpq %fs:24, %rsp
+; X64-FreeBSD-NEXT:  ja      .LBB1_2
+
+; X64-FreeBSD:       movq %r10, %rax
+; X64-FreeBSD-NEXT:  movabsq $0, %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() {
+        %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-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() {
+        %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-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() {
+        %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-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) {
+        %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
+
+}