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
|
; Test optional annotation of stack addresses.
;
; RUN: opt < %s -passes='function(memprof),module(memprof-module)' -S | FileCheck --check-prefixes=CHECK %s
; RUN: opt < %s -passes='function(memprof),module(memprof-module)' -memprof-instrument-stack -S | FileCheck --check-prefixes=CHECK,STACK %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-unknown-linux-gnu"
define i32 @test_stack_load() {
entry:
%x = alloca i32, align 4
%tmp1 = load i32, ptr %x, align 4
ret i32 %tmp1
}
; CHECK-LABEL: @test_stack_load
; CHECK: %[[SHADOW_OFFSET:[^ ]*]] = load i64, ptr @__memprof_shadow_memory_dynamic_address
; CHECK-NEXT: %x = alloca i32
; STACK-NEXT: %[[LOAD_ADDR:[^ ]*]] = ptrtoint ptr %x to i64
; STACK-NEXT: %[[MASKED_ADDR:[^ ]*]] = and i64 %[[LOAD_ADDR]], -64
; STACK-NEXT: %[[SHIFTED_ADDR:[^ ]*]] = lshr i64 %[[MASKED_ADDR]], 3
; STACK-NEXT: add i64 %[[SHIFTED_ADDR]], %[[SHADOW_OFFSET]]
; STACK-NEXT: %[[LOAD_SHADOW_PTR:[^ ]*]] = inttoptr
; STACK-NEXT: %[[LOAD_SHADOW:[^ ]*]] = load i64, ptr %[[LOAD_SHADOW_PTR]]
; STACK-NEXT: %[[NEW_SHADOW:[^ ]*]] = add i64 %[[LOAD_SHADOW]], 1
; STACK-NEXT: store i64 %[[NEW_SHADOW]], ptr %[[LOAD_SHADOW_PTR]]
; The actual load.
; CHECK-NEXT: %tmp1 = load i32, ptr %x
; CHECK-NEXT: ret i32 %tmp1
define void @test_stack_store() {
entry:
%x = alloca i32, align 4
store i32 1, ptr %x, align 4
ret void
}
; CHECK-LABEL: @test_stack_store
; CHECK: %[[SHADOW_OFFSET:[^ ]*]] = load i64, ptr @__memprof_shadow_memory_dynamic_address
; CHECK-NEXT: %x = alloca i32
; STACK-NEXT: %[[STORE_ADDR:[^ ]*]] = ptrtoint ptr %x to i64
; STACK-NEXT: %[[MASKED_ADDR:[^ ]*]] = and i64 %[[STORE_ADDR]], -64
; STACK-NEXT: %[[SHIFTED_ADDR:[^ ]*]] = lshr i64 %[[MASKED_ADDR]], 3
; STACK-NEXT: add i64 %[[SHIFTED_ADDR]], %[[SHADOW_OFFSET]]
; STACK-NEXT: %[[STORE_SHADOW_PTR:[^ ]*]] = inttoptr
; STACK-NEXT: %[[STORE_SHADOW:[^ ]*]] = load i64, ptr %[[STORE_SHADOW_PTR]]
; STACK-NEXT: %[[NEW_SHADOW:[^ ]*]] = add i64 %[[STORE_SHADOW]], 1
; STACK-NEXT: store i64 %[[NEW_SHADOW]], ptr %[[STORE_SHADOW_PTR]]
; The actual store.
; CHECK-NEXT: store i32 1, ptr %x
; CHECK-NEXT: ret void
|
