From 7692ce9e810ed1707da46faf20c84f1ffd54bc55 Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Wed, 11 Jan 2012 18:51:03 +0000
Subject: Split segmented stacks tests into tests for static- and dynamic-size
 frames. Patch by Brian Anderson.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147959 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/X86/segmented-stacks-dynamic.ll | 64 ++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 test/CodeGen/X86/segmented-stacks-dynamic.ll

(limited to 'test/CodeGen/X86/segmented-stacks-dynamic.ll')

diff --git a/test/CodeGen/X86/segmented-stacks-dynamic.ll b/test/CodeGen/X86/segmented-stacks-dynamic.ll
new file mode 100644
index 0000000000..103551b91a
--- /dev/null
+++ b/test/CodeGen/X86/segmented-stacks-dynamic.ll
@@ -0,0 +1,64 @@
+; 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 -filetype=obj
+; RUN: llc < %s -mtriple=x86_64-linux -segmented-stacks -filetype=obj
+
+; Just to prevent the alloca from being optimized away
+declare void @dummy_use(i32*, i32)
+
+define i32 @test_basic(i32 %l) {
+        %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:      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-NEXT: 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:      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
+; X64-NEXT: subq %rax, %rdi
+; X64-NEXT: cmpq %rdi, %fs:112
+
+; X64:      movq %rdi, %rsp
+
+; X64:      movq %rax, %rdi
+; X64-NEXT: callq __morestack_allocate_stack_space
+; X64-NEXT: movq %rax, %rdi
+
+}
-- 
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