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gerrit-public.fairphone.software / fp2-dev / platform / external / llvm / ccce1233a27e9527cfb68cbced311351332a3a4e / . / test / CodeGen / X86 / segmented-stacks-dynamic.ll
blob: d68b00b69a2bb8760dbeb94b8a60a5307ad4f505 [file] [log] [blame]
Andrew Trick922d3142012-02-01 23:20:51 +0000[diff] [blame]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
Rafael Espindola7692ce92012-01-11 18:51:03 +0000[diff] [blame]5
6; Just to prevent the alloca from being optimized away
7declare void @dummy_use(i32*, i32)
8
9define 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
14
15true:
16 ret i32 0
17
18false:
19 %newlen = sub i32 %l, 1
20 %retvalue = call i32 @test_basic(i32 %newlen)
21 ret i32 %retvalue
22
23; X32: test_basic:
24
25; X32: cmpl %gs:48, %esp
26; X32-NEXT: ja .LBB0_2
27
28; X32: pushl $4
29; X32-NEXT: pushl $12
30; X32-NEXT: calll __morestack
31; X32-NEXT: ret
32
33; X32: movl %esp, %eax
34; X32-NEXT: subl %ecx, %eax
35; X32-NEXT: cmpl %eax, %gs:48
36
37; X32: movl %eax, %esp
38
39; X32: subl $12, %esp
40; X32-NEXT: pushl %ecx
41; X32-NEXT: calll __morestack_allocate_stack_space
42; X32-NEXT: addl $16, %esp
43
44; X64: test_basic:
45
46; X64: cmpq %fs:112, %rsp
47; X64-NEXT: ja .LBB0_2
48
49; X64: movabsq $24, %r10
50; X64-NEXT: movabsq $0, %r11
51; X64-NEXT: callq __morestack
52; X64-NEXT: ret
53
Jakob Stoklund Olesenccce1232012-05-19 20:54:07 +0000[diff] [blame^]54; X64: movq %rsp, %[[RDI:rdi|rax]]
55; X64-NEXT: subq %{{.*}}, %[[RDI]]
56; X64-NEXT: cmpq %[[RDI]], %fs:112
Rafael Espindola7692ce92012-01-11 18:51:03 +0000[diff] [blame]57
Jakob Stoklund Olesenccce1232012-05-19 20:54:07 +0000[diff] [blame^]58; X64: movq %[[RDI]], %rsp
Rafael Espindola7692ce92012-01-11 18:51:03 +0000[diff] [blame]59
Jakob Stoklund Olesenccce1232012-05-19 20:54:07 +0000[diff] [blame^]60; X64: movq %{{.*}}, %rdi
Rafael Espindola7692ce92012-01-11 18:51:03 +0000[diff] [blame]61; X64-NEXT: callq __morestack_allocate_stack_space
Jakob Stoklund Olesenccce1232012-05-19 20:54:07 +0000[diff] [blame^]62; X64: movq %rax, %rdi
Rafael Espindola7692ce92012-01-11 18:51:03 +0000[diff] [blame]63
64}