Support segmented stacks on mac.
This uses TLS slot 90, which actually belongs to JavaScriptCore. We only support
frames with static size
Patch by Brian Anderson.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147960 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/X86/segmented-stacks.ll b/test/CodeGen/X86/segmented-stacks.ll
index 3ba18cf..6e91d00 100644
--- a/test/CodeGen/X86/segmented-stacks.ll
+++ b/test/CodeGen/X86/segmented-stacks.ll
@@ -1,9 +1,13 @@
-; RUN: llc < %s -mtriple=i686-linux -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=X32
-; RUN: llc < %s -mtriple=x86_64-linux -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=X64
+; RUN: llc < %s -mtriple=i686-linux -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=X32-Linux
+; RUN: llc < %s -mtriple=x86_64-linux -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=X64-Linux
+; RUN: llc < %s -mtriple=i686-darwin -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=X32-Darwin
+; RUN: llc < %s -mtriple=x86_64-darwin -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=X64-Darwin
; We used to crash with filetype=obj
; RUN: llc < %s -mtriple=i686-linux -segmented-stacks -filetype=obj
; RUN: llc < %s -mtriple=x86_64-linux -segmented-stacks -filetype=obj
+; RUN: llc < %s -mtriple=i686-darwin -segmented-stacks -filetype=obj
+; RUN: llc < %s -mtriple=x86_64-darwin -segmented-stacks -filetype=obj
; Just to prevent the alloca from being optimized away
declare void @dummy_use(i32*, i32)
@@ -13,25 +17,46 @@
call void @dummy_use (i32* %mem, i32 10)
ret void
-; X32: test_basic:
+; X32-Linux: test_basic:
-; X32: cmpl %gs:48, %esp
-; X32-NEXT: ja .LBB0_2
+; X32-Linux: cmpl %gs:48, %esp
+; X32-Linux-NEXT: ja .LBB0_2
-; X32: pushl $0
-; X32-NEXT: pushl $60
-; X32-NEXT: calll __morestack
-; X32-NEXT: ret
+; X32-Linux: pushl $0
+; X32-Linux-NEXT: pushl $60
+; X32-Linux-NEXT: calll __morestack
+; X32-Linux-NEXT: ret
-; X64: test_basic:
+; X64-Linux: test_basic:
-; X64: cmpq %fs:112, %rsp
-; X64-NEXT: ja .LBB0_2
+; X64-Linux: cmpq %fs:112, %rsp
+; X64-Linux-NEXT: ja .LBB0_2
-; X64: movabsq $40, %r10
-; X64-NEXT: movabsq $0, %r11
-; X64-NEXT: callq __morestack
-; X64-NEXT: ret
+; X64-Linux: movabsq $40, %r10
+; X64-Linux-NEXT: movabsq $0, %r11
+; X64-Linux-NEXT: callq __morestack
+; X64-Linux-NEXT: ret
+
+; X32-Darwin: 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: 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
}
@@ -40,23 +65,42 @@
%result = add i32 %other, %addend
ret i32 %result
-; X32: cmpl %gs:48, %esp
-; X32-NEXT: ja .LBB1_2
+; X32-Linux: cmpl %gs:48, %esp
+; X32-Linux-NEXT: ja .LBB1_2
-; X32: pushl $4
-; X32-NEXT: pushl $0
-; X32-NEXT: calll __morestack
-; X32-NEXT: ret
+; X32-Linux: pushl $4
+; X32-Linux-NEXT: pushl $0
+; X32-Linux-NEXT: calll __morestack
+; X32-Linux-NEXT: ret
-; X64: cmpq %fs:112, %rsp
-; X64-NEXT: ja .LBB1_2
+; X64-Linux: cmpq %fs:112, %rsp
+; X64-Linux-NEXT: ja .LBB1_2
-; X64: movq %r10, %rax
-; X64-NEXT: movabsq $0, %r10
-; X64-NEXT: movabsq $0, %r11
-; X64-NEXT: callq __morestack
-; X64-NEXT: ret
-; X64-NEXT: movq %rax, %r10
+; 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
}
@@ -65,23 +109,42 @@
call void @dummy_use (i32* %mem, i32 0)
ret void
-; X32: leal -40012(%esp), %ecx
-; X32-NEXT: cmpl %gs:48, %ecx
-; X32-NEXT: ja .LBB2_2
+; X32-Linux: leal -40012(%esp), %ecx
+; X32-Linux-NEXT: cmpl %gs:48, %ecx
+; X32-Linux-NEXT: ja .LBB2_2
-; X32: pushl $0
-; X32-NEXT: pushl $40012
-; X32-NEXT: calll __morestack
-; X32-NEXT: ret
+; X32-Linux: pushl $0
+; X32-Linux-NEXT: pushl $40012
+; X32-Linux-NEXT: calll __morestack
+; X32-Linux-NEXT: ret
-; X64: leaq -40008(%rsp), %r11
-; X64-NEXT: cmpq %fs:112, %r11
-; X64-NEXT: ja .LBB2_2
+; X64-Linux: leaq -40008(%rsp), %r11
+; X64-Linux-NEXT: cmpq %fs:112, %r11
+; X64-Linux-NEXT: ja .LBB2_2
-; X64: movabsq $40008, %r10
-; X64-NEXT: movabsq $0, %r11
-; X64-NEXT: callq __morestack
-; X64-NEXT: ret
+; 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
}
@@ -90,25 +153,46 @@
call void @dummy_use (i32* %mem, i32 10)
ret void
-; X32: test_fastcc:
+; X32-Linux: test_fastcc:
-; X32: cmpl %gs:48, %esp
-; X32-NEXT: ja .LBB3_2
+; X32-Linux: cmpl %gs:48, %esp
+; X32-Linux-NEXT: ja .LBB3_2
-; X32: pushl $0
-; X32-NEXT: pushl $60
-; X32-NEXT: calll __morestack
-; X32-NEXT: ret
+; X32-Linux: pushl $0
+; X32-Linux-NEXT: pushl $60
+; X32-Linux-NEXT: calll __morestack
+; X32-Linux-NEXT: ret
-; X64: test_fastcc:
+; X64-Linux: test_fastcc:
-; X64: cmpq %fs:112, %rsp
-; X64-NEXT: ja .LBB3_2
+; X64-Linux: cmpq %fs:112, %rsp
+; X64-Linux-NEXT: ja .LBB3_2
-; X64: movabsq $40, %r10
-; X64-NEXT: movabsq $0, %r11
-; X64-NEXT: callq __morestack
-; X64-NEXT: ret
+; X64-Linux: movabsq $40, %r10
+; X64-Linux-NEXT: movabsq $0, %r11
+; X64-Linux-NEXT: callq __morestack
+; X64-Linux-NEXT: ret
+
+; X32-Darwin: 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: 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
}
@@ -117,25 +201,72 @@
call void @dummy_use (i32* %mem, i32 0)
ret void
-; X32: test_fastcc_large:
+; X32-Linux: test_fastcc_large:
-; X32: leal -40012(%esp), %eax
-; X32-NEXT: cmpl %gs:48, %eax
-; X32-NEXT: ja .LBB4_2
+; X32-Linux: leal -40012(%esp), %eax
+; X32-Linux-NEXT: cmpl %gs:48, %eax
+; X32-Linux-NEXT: ja .LBB4_2
-; X32: pushl $0
-; X32-NEXT: pushl $40012
-; X32-NEXT: calll __morestack
-; X32-NEXT: ret
+; X32-Linux: pushl $0
+; X32-Linux-NEXT: pushl $40012
+; X32-Linux-NEXT: calll __morestack
+; X32-Linux-NEXT: ret
-; X64: test_fastcc_large:
+; X64-Linux: test_fastcc_large:
-; X64: leaq -40008(%rsp), %r11
-; X64-NEXT: cmpq %fs:112, %r11
-; X64-NEXT: ja .LBB4_2
+; X64-Linux: leaq -40008(%rsp), %r11
+; X64-Linux-NEXT: cmpq %fs:112, %r11
+; X64-Linux-NEXT: ja .LBB4_2
-; X64: movabsq $40008, %r10
-; X64-NEXT: movabsq $0, %r11
-; X64-NEXT: callq __morestack
-; X64-NEXT: ret
+; X64-Linux: movabsq $40008, %r10
+; X64-Linux-NEXT: movabsq $0, %r11
+; X64-Linux-NEXT: callq __morestack
+; X64-Linux-NEXT: ret
+
+; X32-Darwin: 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: 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
+
+}
+
+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: 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
+
}