stack_guard_remat.ll
2.91 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
; RUN: llc < %s -mtriple=thumb-apple-darwin -relocation-model=pic -no-integrated-as | FileCheck %s -check-prefix=PIC
; RUN: llc < %s -mtriple=thumb-apple-darwin -relocation-model=static -no-integrated-as | FileCheck %s -check-prefix=NO-PIC -check-prefix=STATIC
; RUN: llc < %s -mtriple=thumb-apple-darwin -relocation-model=dynamic-no-pic -no-integrated-as | FileCheck %s -check-prefix=NO-PIC -check-prefix=DYNAMIC-NO-PIC
;PIC: foo2
;PIC: ldr [[SAVED_GUARD:r[0-9]+]], [[GUARD_STACK_OFFSET:LCPI[0-9_]+]]
;PIC-NEXT: add [[SAVED_GUARD]], sp
;PIC-NEXT: ldr [[SAVED_GUARD]], {{\[}}[[SAVED_GUARD]]{{\]}}
;PIC-NEXT: ldr [[ORIGINAL_GUARD:r[0-9]+]], [[ORIGINAL_GUARD_LABEL:LCPI[0-9_]+]]
;PIC-NEXT: [[LABEL1:LPC[0-9_]+]]:
;PIC-NEXT: add [[ORIGINAL_GUARD]], pc
;PIC-NEXT: ldr [[ORIGINAL_GUARD]], {{\[}}[[ORIGINAL_GUARD]]{{\]}}
;PIC-NEXT: ldr [[ORIGINAL_GUARD]], {{\[}}[[ORIGINAL_GUARD]]{{\]}}
;PIC-NEXT: subs {{r[0-9]+}}, [[ORIGINAL_GUARD]], [[SAVED_GUARD]]
;PIC: [[GUARD_STACK_OFFSET]]:
;PIC-NEXT: .long 1028
;PIC: [[ORIGINAL_GUARD_LABEL]]:
;PIC-NEXT: .long L___stack_chk_guard$non_lazy_ptr-([[LABEL1]]+4)
;NO-PIC: foo2
;NO-PIC: ldr [[SAVED_GUARD:r[0-9]+]], [[GUARD_STACK_OFFSET:LCPI[0-9_]+]]
;NO-PIC-NEXT: add [[SAVED_GUARD]], sp
;NO-PIC-NEXT: ldr [[SAVED_GUARD]], {{\[}}[[SAVED_GUARD]]{{\]}}
;NO-PIC-NEXT: ldr [[ORIGINAL_GUARD:r[0-9]+]], [[ORIGINAL_GUARD_LABEL:LCPI[0-9_]+]]
;NO-PIC-NOT: LPC
;NO-PIC-NEXT: ldr [[ORIGINAL_GUARD]], {{\[}}[[ORIGINAL_GUARD]]{{\]}}
;DYNAMIC-NO-PIC-NEXT: ldr [[ORIGINAL_GUARD]], {{\[}}[[ORIGINAL_GUARD]]{{\]}}
;NO-PIC-NEXT: subs {{r[0-9]+}}, [[ORIGINAL_GUARD]], [[SAVED_GUARD]]
;STATIC: [[GUARD_STACK_OFFSET]]:
;STATIC-NEXT: .long 1028
;STATIC: [[ORIGINAL_GUARD_LABEL]]:
;STATIC-NEXT: .long ___stack_chk_guard
;DYNAMIC-NO-PIC: [[GUARD_STACK_OFFSET]]:
;DYNAMIC-NO-PIC-NEXT: .long 1028
;DYNAMIC-NO-PIC: [[ORIGINAL_GUARD_LABEL]]:
;DYNAMIC-NO-PIC-NEXT: .long L___stack_chk_guard$non_lazy_ptr
; Function Attrs: nounwind ssp
define i32 @test_stack_guard_remat() #0 {
%a1 = alloca [256 x i32], align 4
%1 = bitcast [256 x i32]* %a1 to i8*
call void @llvm.lifetime.start.p0i8(i64 1024, i8* %1)
%2 = getelementptr inbounds [256 x i32], [256 x i32]* %a1, i32 0, i32 0
call void @foo3(i32* %2) #3
call void asm sideeffect "foo2", "~{r0},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{sp},~{lr}"()
call void @llvm.lifetime.end.p0i8(i64 1024, i8* %1)
ret i32 0
}
; Function Attrs: nounwind
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
declare void @foo3(i32*)
; Function Attrs: nounwind
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture)
attributes #0 = { nounwind ssp "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }