1 ; RUN: llc < %s -mcpu=generic -mtriple=i686-linux -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=X32
2 ; RUN: llc < %s -mcpu=generic -mtriple=x86_64-linux -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=X64
3 ; RUN: llc < %s -mcpu=generic -mtriple=i686-linux -segmented-stacks -filetype=obj
4 ; RUN: llc < %s -mcpu=generic -mtriple=x86_64-linux -segmented-stacks -filetype=obj
6 ; Just to prevent the alloca from being optimized away
7 declare void @dummy_use(i32*, i32)
9 define i32 @test_basic(i32 %l) {
10 %mem = alloca i32, i32 %l
11 call void @dummy_use (i32* %mem, i32 %l)
12 %terminate = icmp eq i32 %l, 0
13 br i1 %terminate, label %true, label %false
19 %newlen = sub i32 %l, 1
20 %retvalue = call i32 @test_basic(i32 %newlen)
25 ; X32: cmpl %gs:48, %esp
26 ; X32-NEXT: ja .LBB0_2
30 ; X32-NEXT: calll __morestack
33 ; X32: movl %esp, %eax
34 ; X32-NEXT: subl %ecx, %eax
35 ; X32-NEXT: cmpl %eax, %gs:48
37 ; X32: movl %eax, %esp
40 ; X32-NEXT: pushl %ecx
41 ; X32-NEXT: calll __morestack_allocate_stack_space
42 ; X32-NEXT: addl $16, %esp
46 ; X64: cmpq %fs:112, %rsp
47 ; X64-NEXT: ja .LBB0_2
49 ; X64: movabsq $24, %r10
50 ; X64-NEXT: movabsq $0, %r11
51 ; X64-NEXT: callq __morestack
54 ; X64: movq %rsp, %[[RDI:rdi|rax]]
55 ; X64-NEXT: subq %{{.*}}, %[[RDI]]
56 ; X64-NEXT: cmpq %[[RDI]], %fs:112
58 ; X64: movq %[[RDI]], %rsp
60 ; X64: movq %{{.*}}, %rdi
61 ; X64-NEXT: callq __morestack_allocate_stack_space
62 ; X64: movq %rax, %rdi