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comparison test/Instrumentation/AddressSanitizer/localescape.ll @ 95:afa8332a0e37

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LLVM 3.8
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Tue, 13 Oct 2015 17:48:58 +0900
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84:f3e34b893a5f 95:afa8332a0e37
1 ; RUN: opt < %s -asan -asan-module -asan-use-after-return -asan-stack-dynamic-alloca -S | FileCheck %s
2 ; RUN: opt < %s -asan -asan-module -asan-use-after-return=0 -asan-stack-dynamic-alloca=0 -S | FileCheck %s
3
4 target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
5 target triple = "i686-pc-windows-msvc18.0.0"
6
7 declare i32 @llvm.eh.typeid.for(i8*) #2
8 declare i8* @llvm.frameaddress(i32)
9 declare i8* @llvm.x86.seh.recoverfp(i8*, i8*)
10 declare i8* @llvm.localrecover(i8*, i8*, i32)
11 declare void @llvm.localescape(...) #1
12
13 declare i32 @_except_handler3(...)
14 declare void @may_throw(i32* %r)
15
16 define i32 @main() sanitize_address personality i8* bitcast (i32 (...)* @_except_handler3 to i8*) {
17 entry:
18 %r = alloca i32, align 4
19 %__exception_code = alloca i32, align 4
20 call void (...) @llvm.localescape(i32* nonnull %__exception_code)
21 %0 = bitcast i32* %r to i8*
22 store i32 0, i32* %r, align 4
23 invoke void @may_throw(i32* nonnull %r) #4
24 to label %__try.cont unwind label %lpad
25
26 lpad: ; preds = %entry
27 %1 = landingpad { i8*, i32 }
28 catch i8* bitcast (i32 ()* @"\01?filt$0@0@main@@" to i8*)
29 %2 = extractvalue { i8*, i32 } %1, 1
30 %3 = call i32 @llvm.eh.typeid.for(i8* bitcast (i32 ()* @"\01?filt$0@0@main@@" to i8*)) #1
31 %matches = icmp eq i32 %2, %3
32 br i1 %matches, label %__except, label %eh.resume
33
34 __except: ; preds = %lpad
35 store i32 1, i32* %r, align 4
36 br label %__try.cont
37
38 __try.cont: ; preds = %entry, %__except
39 %4 = load i32, i32* %r, align 4
40 ret i32 %4
41
42 eh.resume: ; preds = %lpad
43 resume { i8*, i32 } %1
44 }
45
46 ; Check that the alloca remains static and the localescape call remains in the
47 ; entry block.
48
49 ; CHECK-LABEL: define i32 @main()
50 ; CHECK-NOT: br {{.*}}label
51 ; CHECK: %__exception_code = alloca i32, align 4
52 ; CHECK-NOT: br {{.*}}label
53 ; CHECK: call void (...) @llvm.localescape(i32* nonnull %__exception_code)
54
55 ; Function Attrs: nounwind
56 define internal i32 @"\01?filt$0@0@main@@"() #1 {
57 entry:
58 %0 = tail call i8* @llvm.frameaddress(i32 1)
59 %1 = tail call i8* @llvm.x86.seh.recoverfp(i8* bitcast (i32 ()* @main to i8*), i8* %0)
60 %2 = tail call i8* @llvm.localrecover(i8* bitcast (i32 ()* @main to i8*), i8* %1, i32 0)
61 %__exception_code = bitcast i8* %2 to i32*
62 %3 = getelementptr inbounds i8, i8* %0, i32 -20
63 %4 = bitcast i8* %3 to { i32*, i8* }**
64 %5 = load { i32*, i8* }*, { i32*, i8* }** %4, align 4
65 %6 = getelementptr inbounds { i32*, i8* }, { i32*, i8* }* %5, i32 0, i32 0
66 %7 = load i32*, i32** %6, align 4
67 %8 = load i32, i32* %7, align 4
68 store i32 %8, i32* %__exception_code, align 4
69 ret i32 1
70 }
71
72 ; CHECK-LABEL: define internal i32 @"\01?filt$0@0@main@@"()
73 ; CHECK: tail call i8* @llvm.localrecover(i8* bitcast (i32 ()* @main to i8*), i8* {{.*}}, i32 0)
74
75 define void @ScaleFilterCols_SSSE3(i8* %dst_ptr, i8* %src_ptr, i32 %dst_width, i32 %x, i32 %dx) sanitize_address {
76 entry:
77 %dst_width.addr = alloca i32, align 4
78 store i32 %dst_width, i32* %dst_width.addr, align 4
79 %0 = call { i8*, i8*, i32, i32, i32 } asm sideeffect "", "=r,=r,={ax},=r,=r,=*rm,rm,rm,0,1,2,3,4,5,~{memory},~{cc},~{xmm0},~{xmm1},~{xmm2},~{xmm3},~{xmm4},~{xmm5},~{xmm6},~{dirflag},~{fpsr},~{flags}"(i32* nonnull %dst_width.addr, i32 %x, i32 %dx, i8* %dst_ptr, i8* %src_ptr, i32 0, i32 0, i32 0, i32 %dst_width)
80 ret void
81 }
82
83 define void @ScaleColsUp2_SSE2() sanitize_address {
84 entry:
85 ret void
86 }