1 ; Test a pile of objectsize bounds checking.
2 ; RUN: opt < %s -instcombine -S | FileCheck %s
3 ; We need target data to get the sizes of the arrays and structures.
4 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
6 @a = private global [60 x i8] zeroinitializer, align 1 ; <[60 x i8]*>
7 @.str = private constant [8 x i8] c"abcdefg\00" ; <[8 x i8]*>
9 define i32 @foo() nounwind {
11 ; CHECK-NEXT: ret i32 60
12 %1 = call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([60 x i8]* @a, i32 0, i32 0), i1 false)
16 define i8* @bar() nounwind {
20 %0 = call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([60 x i8]* @a, i32 0, i32 0), i1 false)
21 %cmp = icmp ne i32 %0, -1
23 br i1 %cmp, label %cond.true, label %cond.false
26 %1 = load i8** %retval
30 %2 = load i8** %retval
34 define i32 @f() nounwind {
36 ; CHECK-NEXT: ret i32 0
37 %1 = call i32 @llvm.objectsize.i32(i8* getelementptr ([60 x i8]* @a, i32 1, i32 0), i1 false)
41 @window = external global [0 x i8]
43 define i1 @baz() nounwind {
45 ; CHECK-NEXT: ret i1 true
46 %1 = tail call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([0 x i8]* @window, i32 0, i32 0), i1 false)
47 %2 = icmp eq i32 %1, -1
51 define void @test1(i8* %q, i32 %x) nounwind noinline {
53 ; CHECK: objectsize.i32
55 %0 = call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([0 x i8]* @window, i32 0, i32 10), i1 false) ; <i64> [#uses=1]
56 %1 = icmp eq i32 %0, -1 ; <i1> [#uses=1]
57 br i1 %1, label %"47", label %"46"
59 "46": ; preds = %entry
62 "47": ; preds = %entry
66 @.str5 = private constant [9 x i32] [i32 97, i32 98, i32 99, i32 100, i32 0, i32
67 101, i32 102, i32 103, i32 0], align 4
68 define i32 @test2() nounwind {
70 ; CHECK-NEXT: ret i32 34
71 %1 = call i32 @llvm.objectsize.i32(i8* getelementptr (i8* bitcast ([9 x i32]* @.str5 to i8*), i32 2), i1 false)
76 @array = internal global [480 x float] zeroinitializer ; <[480 x float]*> [#uses=1]
78 declare i8* @__memcpy_chk(i8*, i8*, i32, i32) nounwind
80 declare i32 @llvm.objectsize.i32(i8*, i1) nounwind readonly
82 declare i8* @__inline_memcpy_chk(i8*, i8*, i32) nounwind inlinehint
84 define void @test3() nounwind {
87 br i1 undef, label %bb11, label %bb12
90 %0 = getelementptr inbounds float* getelementptr inbounds ([480 x float]* @array, i32 0, i32 128), i32 -127 ; <float*> [#uses=1]
91 %1 = bitcast float* %0 to i8* ; <i8*> [#uses=1]
92 %2 = call i32 @llvm.objectsize.i32(i8* %1, i1 false) ; <i32> [#uses=1]
93 %3 = call i8* @__memcpy_chk(i8* undef, i8* undef, i32 512, i32 %2) nounwind ; <i8*> [#uses=0]
98 %4 = getelementptr inbounds float* getelementptr inbounds ([480 x float]* @array, i32 0, i32 128), i32 -127 ; <float*> [#uses=1]
99 %5 = bitcast float* %4 to i8* ; <i8*> [#uses=1]
100 %6 = call i8* @__inline_memcpy_chk(i8* %5, i8* undef, i32 512) nounwind inlinehint ; <i8*> [#uses=0]
101 ; CHECK: @__inline_memcpy_chk
107 %struct.data = type { [100 x i32], [100 x i32], [1024 x i8] }
109 define i32 @test4() nounwind ssp {
112 %0 = alloca %struct.data, align 8
113 %1 = bitcast %struct.data* %0 to i8*
114 %2 = call i32 @llvm.objectsize.i32(i8* %1, i1 false) nounwind
115 ; CHECK-NOT: @llvm.objectsize
116 ; CHECK: @llvm.memset.p0i8.i32(i8* %1, i8 0, i32 1824, i32 8, i1 false)
117 %3 = call i8* @__memset_chk(i8* %1, i32 0, i32 1824, i32 %2) nounwind
122 @s = external global i8*
124 define void @test5(i32 %n) nounwind ssp {
127 %0 = tail call noalias i8* @malloc(i32 20) nounwind
128 %1 = tail call i32 @llvm.objectsize.i32(i8* %0, i1 false)
129 %2 = load i8** @s, align 8
130 ; CHECK-NOT: @llvm.objectsize
131 ; CHECK: @llvm.memcpy.p0i8.p0i8.i32(i8* %0, i8* %1, i32 10, i32 1, i1 false)
132 %3 = tail call i8* @__memcpy_chk(i8* %0, i8* %2, i32 10, i32 %1) nounwind
136 define void @test6(i32 %n) nounwind ssp {
139 %0 = tail call noalias i8* @malloc(i32 20) nounwind
140 %1 = tail call i32 @llvm.objectsize.i32(i8* %0, i1 false)
141 %2 = load i8** @s, align 8
142 ; CHECK-NOT: @llvm.objectsize
143 ; CHECK: @__memcpy_chk(i8* %0, i8* %1, i32 30, i32 20)
144 %3 = tail call i8* @__memcpy_chk(i8* %0, i8* %2, i32 30, i32 %1) nounwind
148 declare i8* @__memset_chk(i8*, i32, i32, i32) nounwind
150 declare noalias i8* @malloc(i32) nounwind
152 declare i32 @llvm.objectsize.i32(i8*, i1) nounwind readonly