1 ; RUN: llc < %s -mtriple=i686-linux -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=X32
2 ; RUN: llc < %s -mtriple=x86_64-linux -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=X64
4 ; Just to prevent the alloca from being optimized away
5 declare void @dummy_use(i32*, i32)
7 define i32 @test_basic(i32 %l) {
8 %mem = alloca i32, i32 %l
9 call void @dummy_use (i32* %mem, i32 %l)
10 %terminate = icmp eq i32 %l, 0
11 br i1 %terminate, label %true, label %false
17 %newlen = sub i32 %l, 1
18 %retvalue = call i32 @test_basic(i32 %newlen)
23 ; X32: cmpl %gs:48, %esp
27 ; X32-NEXT: calll __morestack
30 ; X32: movl %esp, %eax
31 ; X32-NEXT: subl %ecx, %eax
32 ; X32-NEXT: cmpl %eax, %gs:48
34 ; X32: movl %eax, %esp
37 ; X32-NEXT: pushl %ecx
38 ; X32-NEXT: calll __morestack_allocate_stack_space
39 ; X32-NEXT: addl $16, %esp
43 ; X64: cmpq %fs:112, %rsp
45 ; X64: movabsq $24, %r10
46 ; X64-NEXT: movabsq $0, %r11
47 ; X64-NEXT: callq __morestack
50 ; X64: movq %rsp, %rdi
51 ; X64-NEXT: subq %rax, %rdi
52 ; X64-NEXT: cmpq %rdi, %fs:112
54 ; X64: movq %rdi, %rsp
56 ; X64: movq %rax, %rdi
57 ; X64-NEXT: callq __morestack_allocate_stack_space
58 ; X64-NEXT: movq %rax, %rdi
62 define i32 @test_nested(i32 * nest %closure, i32 %other) {
63 %addend = load i32 * %closure
64 %result = add i32 %other, %addend
67 ; X32: cmpl %gs:48, %esp
71 ; X32-NEXT: calll __morestack
74 ; X64: cmpq %fs:112, %rsp
76 ; X64: movq %r10, %rax
77 ; X64-NEXT: movabsq $0, %r10
78 ; X64-NEXT: movabsq $0, %r11
79 ; X64-NEXT: callq __morestack
81 ; X64-NEXT: movq %rax, %r10
85 define void @test_large() {
86 %mem = alloca i32, i32 10000
87 call void @dummy_use (i32* %mem, i32 0)
90 ; X32: leal -40012(%esp), %ecx
91 ; X32-NEXT: cmpl %gs:48, %ecx
94 ; X32-NEXT: pushl $40012
95 ; X32-NEXT: calll __morestack
98 ; X64: leaq -40008(%rsp), %r11
99 ; X64-NEXT: cmpq %fs:112, %r11
101 ; X64: movabsq $40008, %r10
102 ; X64-NEXT: movabsq $0, %r11
103 ; X64-NEXT: callq __morestack