1 ; RUN: opt -codegenprepare -S < %s | FileCheck %s
3 ; Ensure we act sanely on overflow.
4 ; CHECK-LABEL: define i32 @bar
8 %az = alloca [2147483649 x i32], align 16
9 %a = alloca i8*, align 8
10 %arraydecay = getelementptr inbounds [2147483649 x i32], [2147483649 x i32]* %az, i32 0, i32 0
11 %0 = bitcast i32* %arraydecay to i8*
12 store i8* %0, i8** %a, align 8
13 %1 = load i8*, i8** %a, align 8
14 %2 = call i32 @llvm.objectsize.i32.p0i8(i8* %1, i1 false)
18 ; CHECK-LABEL: define i32 @baz
19 define i32 @baz(i32 %n) {
22 %az = alloca [1 x i32], align 16
23 %bz = alloca [4294967297 x i32], align 16
24 %tobool = icmp ne i32 %n, 0
25 %arraydecay = getelementptr inbounds [1 x i32], [1 x i32]* %az, i64 0, i64 0
26 %arraydecay1 = getelementptr inbounds [4294967297 x i32], [4294967297 x i32]* %bz, i64 0, i64 0
27 %cond = select i1 %tobool, i32* %arraydecay, i32* %arraydecay1
28 %0 = bitcast i32* %cond to i8*
29 %1 = call i32 @llvm.objectsize.i32.p0i8(i8* %0, i1 false)
33 declare i32 @llvm.objectsize.i32.p0i8(i8*, i1)
35 ; The following tests were generated by:
37 ; #define STATIC_BUF_SIZE 10
38 ; #define LARGER_BUF_SIZE 30
40 ; size_t foo1(int flag) {
42 ; char chararray[LARGER_BUF_SIZE];
43 ; char chararray2[STATIC_BUF_SIZE];
49 ; return __builtin_object_size(cptr, 2);
52 ; size_t foo2(int n) {
55 ; char *Ptr = n ? Small : Large + 19;
56 ; return __builtin_object_size(Ptr, 0);
64 ; printf("\n%d %d\n", ret, ret1);
67 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
68 target triple = "x86_64-unknown-linux-gnu"
70 @.str = private unnamed_addr constant [8 x i8] c"\0A%d %d\0A\00", align 1
72 define i64 @foo1(i32 %flag) {
74 %chararray = alloca [30 x i8], align 16
75 %chararray2 = alloca [10 x i8], align 1
76 %0 = getelementptr inbounds [30 x i8], [30 x i8]* %chararray, i64 0, i64 0
77 call void @llvm.lifetime.start.p0i8(i64 30, i8* %0)
78 %1 = getelementptr inbounds [10 x i8], [10 x i8]* %chararray2, i64 0, i64 0
79 call void @llvm.lifetime.start.p0i8(i64 10, i8* %1)
80 %tobool = icmp eq i32 %flag, 0
81 %cptr.0 = select i1 %tobool, i8* %0, i8* %1
82 %2 = call i64 @llvm.objectsize.i64.p0i8(i8* %cptr.0, i1 true)
83 call void @llvm.lifetime.end.p0i8(i64 10, i8* %1)
84 call void @llvm.lifetime.end.p0i8(i64 30, i8* %0)
90 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
92 declare i64 @llvm.objectsize.i64.p0i8(i8*, i1)
94 declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture)
96 define i64 @foo2(i32 %n) {
98 %Small = alloca [10 x i8], align 1
99 %Large = alloca [20 x i8], align 16
100 %0 = getelementptr inbounds [10 x i8], [10 x i8]* %Small, i64 0, i64 0
101 call void @llvm.lifetime.start.p0i8(i64 10, i8* %0)
102 %1 = getelementptr inbounds [20 x i8], [20 x i8]* %Large, i64 0, i64 0
103 call void @llvm.lifetime.start.p0i8(i64 20, i8* %1)
104 %tobool = icmp ne i32 %n, 0
105 %add.ptr = getelementptr inbounds [20 x i8], [20 x i8]* %Large, i64 0, i64 19
106 %cond = select i1 %tobool, i8* %0, i8* %add.ptr
107 %2 = call i64 @llvm.objectsize.i64.p0i8(i8* %cond, i1 false)
108 call void @llvm.lifetime.end.p0i8(i64 20, i8* %1)
109 call void @llvm.lifetime.end.p0i8(i64 10, i8* %0)
117 %call = tail call i64 @foo1(i32 0)
118 %call1 = tail call i64 @foo2(i32 0)
119 %call2 = tail call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i64 %call, i64 %call1)
123 declare i32 @printf(i8* nocapture readonly, ...)