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3450346030
Do not instrument pointers with address space attributes since we cannot track them anyway. Instrumenting them results in false positives in ASan and a compiler crash in TSan. (The compiler should not crash in any case, but that's a different problem.) llvm-svn: 273339
34 lines
1.3 KiB
LLVM
34 lines
1.3 KiB
LLVM
; RUN: opt < %s -tsan -S | FileCheck %s
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.11.0"
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; Checks that we do not instrument loads and stores comming from custom address space.
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; These result in crashing the compiler.
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; int foo(int argc, const char * argv[]) {
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; void *__attribute__((address_space(256))) *gs_base = (((void * __attribute__((address_space(256))) *)0));
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; void *somevalue = gs_base[-1];
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; return somevalue;
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; }
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define i32 @foo(i32 %argc, i8** %argv) sanitize_thread {
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entry:
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%retval = alloca i32, align 4
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%argc.addr = alloca i32, align 4
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%argv.addr = alloca i8**, align 8
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%gs_base = alloca i8* addrspace(256)*, align 8
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%somevalue = alloca i8*, align 8
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store i32 0, i32* %retval, align 4
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store i32 %argc, i32* %argc.addr, align 4
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store i8** %argv, i8*** %argv.addr, align 8
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store i8* addrspace(256)* null, i8* addrspace(256)** %gs_base, align 8
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%0 = load i8* addrspace(256)*, i8* addrspace(256)** %gs_base, align 8
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%arrayidx = getelementptr inbounds i8*, i8* addrspace(256)* %0, i64 -1
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%1 = load i8*, i8* addrspace(256)* %arrayidx, align 8
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store i8* %1, i8** %somevalue, align 8
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%2 = load i8*, i8** %somevalue, align 8
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%3 = ptrtoint i8* %2 to i32
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ret i32 %3
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}
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; CHECK-NOT: call void @__tsan_read
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; CHECK-NOT: addrspacecast
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