| Rafael Espindola | b0bf893 | 2011-08-30 19:51:29 +0000 | [diff] [blame^] | 1 | ; RUN: llc < %s -march=x86 -segmented-stacks | FileCheck %s -check-prefix=X32 |
| 2 | ; RUN: llc < %s -march=x86-64 -segmented-stacks | FileCheck %s -check-prefix=X64 |
| 3 | |
| 4 | ; Just to prevent the alloca from being optimized away |
| 5 | declare void @dummy_use(i32*, i32) |
| 6 | |
| 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 |
| 12 | |
| 13 | true: |
| 14 | ret i32 0 |
| 15 | |
| 16 | false: |
| 17 | %newlen = sub i32 %l, 1 |
| 18 | %retvalue = call i32 @test_basic(i32 %newlen) |
| 19 | ret i32 %retvalue |
| 20 | |
| 21 | ; X32: test_basic: |
| 22 | |
| 23 | ; X32: leal -12(%esp), %ecx |
| 24 | ; X32-NEXT: cmpl %gs:48, %ecx |
| 25 | |
| 26 | ; X32: subl $8, %esp |
| 27 | ; X32-NEXT: pushl $4 |
| 28 | ; X32-NEXT: pushl $12 |
| 29 | ; X32-NEXT: calll __morestack |
| 30 | ; X32-NEXT: addl $8, %esp |
| 31 | ; X32-NEXT: ret |
| 32 | |
| 33 | ; X32: movl %eax, %esp |
| 34 | |
| 35 | ; X32: subl $12, %esp |
| 36 | ; X32-NEXT: pushl %ecx |
| 37 | ; X32-NEXT: calll __morestack_allocate_stack_space |
| 38 | ; X32-NEXT: addl $16, %esp |
| 39 | |
| 40 | ; X64: test_basic: |
| 41 | |
| 42 | ; X64: leaq -24(%rsp), %r11 |
| 43 | ; X64-NEXT: cmpq %fs:112, %r11 |
| 44 | |
| 45 | ; X64: movabsq $24, %r10 |
| 46 | ; X64-NEXT: movabsq $0, %r11 |
| 47 | ; X64-NEXT: callq __morestack |
| 48 | ; X64-NEXT: ret |
| 49 | |
| 50 | ; X64: movq %rsp, %rax |
| 51 | ; X64-NEXT: subq %rcx, %rax |
| 52 | ; X64-NEXT: cmpq %rax, %fs:112 |
| 53 | |
| 54 | ; X64: movq %rax, %rsp |
| 55 | |
| 56 | ; X64: movq %rcx, %rdi |
| 57 | ; X64-NEXT: callq __morestack_allocate_stack_space |
| 58 | |
| 59 | } |
| 60 | |
| 61 | define i32 @test_nested(i32 * nest %closure, i32 %other) { |
| 62 | %addend = load i32 * %closure |
| 63 | %result = add i32 %other, %addend |
| 64 | ret i32 %result |
| 65 | |
| 66 | ; X32: leal (%esp), %edx |
| 67 | ; X32-NEXT: cmpl %gs:48, %edx |
| 68 | |
| 69 | |
| 70 | ; X32: subl $8, %esp |
| 71 | ; X32-NEXT: pushl $4 |
| 72 | ; X32-NEXT: pushl $0 |
| 73 | ; X32-NEXT: calll __morestack |
| 74 | ; X32-NEXT: addl $8, %esp |
| 75 | ; X32-NEXT: ret |
| 76 | |
| 77 | ; X64: leaq (%rsp), %r11 |
| 78 | ; X64-NEXT: cmpq %fs:112, %r11 |
| 79 | |
| 80 | ; X64: movq %r10, %rax |
| 81 | ; X64-NEXT: movabsq $0, %r10 |
| 82 | ; X64-NEXT: movabsq $0, %r11 |
| 83 | ; X64-NEXT: callq __morestack |
| 84 | ; X64-NEXT: ret |
| 85 | ; X64-NEXT: movq %rax, %r10 |
| 86 | |
| 87 | } |