Support segmented stacks on win32.
Uses the pvArbitrary slot of the TIB, which is reserved for applications. We
only support frames with a static size.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148040 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/X86/segmented-stacks.ll b/test/CodeGen/X86/segmented-stacks.ll
index 6e91d00..4c4c542 100644
--- a/test/CodeGen/X86/segmented-stacks.ll
+++ b/test/CodeGen/X86/segmented-stacks.ll
@@ -2,12 +2,14 @@
; 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
+; RUN: llc < %s -mtriple=i686-mingw32 -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=X32-MinGW
; 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
+; RUN: llc < %s -mtriple=i686-mingw32 -segmented-stacks -filetype=obj
; Just to prevent the alloca from being optimized away
declare void @dummy_use(i32*, i32)
@@ -58,6 +60,16 @@
; X64-Darwin-NEXT: callq ___morestack
; X64-Darwin-NEXT: ret
+; X32-MinGW: 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
+
}
define i32 @test_nested(i32 * nest %closure, i32 %other) {
@@ -102,6 +114,14 @@
; 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
+
}
define void @test_large() {
@@ -146,6 +166,15 @@
; 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
+
}
define fastcc void @test_fastcc() {
@@ -194,6 +223,16 @@
; X64-Darwin-NEXT: callq ___morestack
; X64-Darwin-NEXT: ret
+; X32-MinGW: 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
+
}
define fastcc void @test_fastcc_large() {
@@ -246,6 +285,17 @@
; X64-Darwin-NEXT: callq ___morestack
; X64-Darwin-NEXT: ret
+; X32-MinGW: 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
+
}
define fastcc void @test_fastcc_large_with_ecx_arg(i32 %a) {