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Issue 2194853003: Subzero: Implemented codegen for poisoning and unpoisoning stack redzones (Closed) Base URL: https://chromium.googlesource.com/native_client/pnacl-subzero.git@master
Patch Set: Added missing REQUIRES directive Created 4 years, 4 months ago
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1 ; Check that functions with multiple returns are correctly instrumented 1 ; Check that functions with multiple returns are correctly instrumented
2 2
3 ; REQUIRES: allow_dump 3 ; REQUIRES: allow_dump
4 4
5 ; RUN: %p2i -i %s --args -verbose=inst -threads=0 -fsanitize-address \ 5 ; RUN: %p2i -i %s --args -verbose=inst -threads=0 -fsanitize-address \
6 ; RUN: | FileCheck --check-prefix=DUMP %s 6 ; RUN: | FileCheck --check-prefix=DUMP %s
7 7
8 define internal void @ret_twice(i32 %condarg) { 8 define internal void @ret_twice(i32 %condarg) {
9 %local1 = alloca i8, i32 4, align 4 9 %local1 = alloca i8, i32 4, align 4
10 %local2 = alloca i8, i32 4, align 4 10 %local2 = alloca i8, i32 4, align 4
11 %cond = icmp ne i32 %condarg, 0 11 %cond = icmp ne i32 %condarg, 0
12 br i1 %cond, label %yes, label %no 12 br i1 %cond, label %yes, label %no
13 yes: 13 yes:
14 ret void 14 ret void
15 no: 15 no:
16 ret void 16 ret void
17 } 17 }
18 18
19 ; DUMP-LABEL: ================ Instrumented CFG ================ 19 ; DUMP-LABEL:================ Instrumented CFG ================
20 ; DUMP-NEXT: define internal void @ret_twice(i32 %condarg) { 20 ; DUMP-NEXT: define internal void @ret_twice(i32 %condarg) {
21 ; DUMP-NEXT: __0: 21 ; DUMP-NEXT: __0:
22 ; DUMP-NEXT: %__$rz0 = alloca i8, i32 32, align 8
22 ; DUMP-NEXT: %local1 = alloca i8, i32 64, align 8 23 ; DUMP-NEXT: %local1 = alloca i8, i32 64, align 8
23 ; DUMP-NEXT: %local2 = alloca i8, i32 64, align 8 24 ; DUMP-NEXT: %local2 = alloca i8, i32 64, align 8
24 ; DUMP-NEXT: %__$rz2 = alloca i8, i32 32, align 8 25 ; DUMP-NEXT: %shadowIndex = lshr i32 %__$rz0, 3
25 ; DUMP-NEXT: call void @__asan_poison(i32 %__$rz2, i32 32, i32 -1) 26 ; DUMP-NEXT: %firstShadowLoc = add i32 %shadowIndex, 53687091
26 ; DUMP-NEXT: %__$rz0 = add i32 %local1, 4 27 ; DUMP-NEXT: %__7 = add i32 %firstShadowLoc, 0
27 ; DUMP-NEXT: call void @__asan_poison(i32 %__$rz0, i32 60, i32 -1) 28 ; DUMP-NEXT: store i32 -1, i32* %__7, align 1
28 ; DUMP-NEXT: %__$rz1 = add i32 %local2, 4 29 ; DUMP-NEXT: %__8 = add i32 %firstShadowLoc, 4
29 ; DUMP-NEXT: call void @__asan_poison(i32 %__$rz1, i32 60, i32 -1) 30 ; DUMP-NEXT: store i32 -252, i32* %__8, align 1
31 ; DUMP-NEXT: %__9 = add i32 %firstShadowLoc, 8
32 ; DUMP-NEXT: store i32 -1, i32* %__9, align 1
33 ; DUMP-NEXT: %__10 = add i32 %firstShadowLoc, 12
34 ; DUMP-NEXT: store i32 -252, i32* %__10, align 1
35 ; DUMP-NEXT: %__11 = add i32 %firstShadowLoc, 16
36 ; DUMP-NEXT: store i32 -1, i32* %__11, align 1
30 ; DUMP-NEXT: %cond = icmp ne i32 %condarg, 0 37 ; DUMP-NEXT: %cond = icmp ne i32 %condarg, 0
31 ; DUMP-NEXT: br i1 %cond, label %yes, label %no 38 ; DUMP-NEXT: br i1 %cond, label %yes, label %no
32 ; DUMP-NEXT: yes: 39 ; DUMP-NEXT: yes:
33 ; DUMP-NEXT: call void @__asan_unpoison(i32 %__$rz0, i32 60) 40 ; DUMP-NEXT: store i32 0, i32* %__7, align 1
34 ; DUMP-NEXT: call void @__asan_unpoison(i32 %__$rz1, i32 60) 41 ; DUMP-NEXT: store i32 0, i32* %__8, align 1
35 ; DUMP-NEXT: call void @__asan_unpoison(i32 %__$rz2, i32 32) 42 ; DUMP-NEXT: store i32 0, i32* %__9, align 1
43 ; DUMP-NEXT: store i32 0, i32* %__10, align 1
44 ; DUMP-NEXT: store i32 0, i32* %__11, align 1
36 ; DUMP-NEXT: ret void 45 ; DUMP-NEXT: ret void
37 ; DUMP-NEXT: no: 46 ; DUMP-NEXT: no:
38 ; DUMP-NEXT: call void @__asan_unpoison(i32 %__$rz0, i32 60) 47 ; DUMP-NEXT: store i32 0, i32* %__7, align 1
39 ; DUMP-NEXT: call void @__asan_unpoison(i32 %__$rz1, i32 60) 48 ; DUMP-NEXT: store i32 0, i32* %__8, align 1
40 ; DUMP-NEXT: call void @__asan_unpoison(i32 %__$rz2, i32 32) 49 ; DUMP-NEXT: store i32 0, i32* %__9, align 1
50 ; DUMP-NEXT: store i32 0, i32* %__10, align 1
51 ; DUMP-NEXT: store i32 0, i32* %__11, align 1
41 ; DUMP-NEXT: ret void 52 ; DUMP-NEXT: ret void
42 ; DUMP-NEXT: } 53 ; DUMP-NEXT: }
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