• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1; RUN: opt < %s -tsan -S | FileCheck %s
2target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
3target triple = "x86_64-apple-macosx10.11.0"
4
5; Checks that we do not instrument loads and stores comming from custom address space.
6; These result in crashing the compiler.
7; int foo(int argc, const char * argv[]) {
8;   void *__attribute__((address_space(256))) *gs_base = (((void * __attribute__((address_space(256))) *)0));
9;   void *somevalue = gs_base[-1];
10;   return somevalue;
11; }
12
13define i32 @foo(i32 %argc, i8** %argv) sanitize_thread {
14entry:
15  %retval = alloca i32, align 4
16  %argc.addr = alloca i32, align 4
17  %argv.addr = alloca i8**, align 8
18  %gs_base = alloca i8* addrspace(256)*, align 8
19  %somevalue = alloca i8*, align 8
20  store i32 0, i32* %retval, align 4
21  store i32 %argc, i32* %argc.addr, align 4
22  store i8** %argv, i8*** %argv.addr, align 8
23  store i8* addrspace(256)* null, i8* addrspace(256)** %gs_base, align 8
24  %0 = load i8* addrspace(256)*, i8* addrspace(256)** %gs_base, align 8
25  %arrayidx = getelementptr inbounds i8*, i8* addrspace(256)* %0, i64 -1
26  %1 = load i8*, i8* addrspace(256)* %arrayidx, align 8
27  store i8* %1, i8** %somevalue, align 8
28  %2 = load i8*, i8** %somevalue, align 8
29  %3 = ptrtoint i8* %2 to i32
30  ret i32 %3
31}
32; CHECK-NOT: call void @__tsan_read
33; CHECK-NOT: addrspacecast
34