2012-03-27 01:35:03 +08:00
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; RUN: opt < %s -tsan -S | FileCheck %s
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; Check that vtable pointer updates are treated in a special way.
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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2013-10-17 15:20:06 +08:00
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define void @Foo(i8** nocapture %a, i8* %b) nounwind uwtable sanitize_thread {
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2012-03-27 01:35:03 +08:00
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entry:
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2013-12-02 16:07:15 +08:00
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; CHECK-LABEL: @Foo
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2012-03-27 01:35:03 +08:00
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; CHECK: call void @__tsan_vptr_update
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2013-12-02 16:07:15 +08:00
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; CHECK: ret void
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2012-03-27 01:35:03 +08:00
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store i8* %b, i8** %a, align 8, !tbaa !0
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ret void
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}
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2013-12-02 16:07:15 +08:00
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2013-12-05 23:03:02 +08:00
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define void @FooInt(i64* nocapture %a, i64 %b) nounwind uwtable sanitize_thread {
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entry:
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; CHECK-LABEL: @FooInt
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; CHECK: call void @__tsan_vptr_update
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; CHECK: ret void
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store i64 %b, i64* %a, align 8, !tbaa !0
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ret void
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}
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2013-12-02 16:07:15 +08:00
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declare i32 @Func1()
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declare i32 @Func2()
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; Test that we properly handle vector stores marked as vtable updates.
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define void @VectorVptrUpdate(<2 x i8*>* nocapture %a, i8* %b) nounwind uwtable sanitize_thread {
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entry:
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; CHECK-LABEL: @VectorVptrUpdate
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; CHECK: call void @__tsan_vptr_update{{.*}}Func1
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; CHECK-NOT: call void @__tsan_vptr_update
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; CHECK: ret void
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store <2 x i8 *> <i8* bitcast(i32 ()* @Func1 to i8 *), i8* bitcast(i32 ()* @Func2 to i8 *)>, <2 x i8 *>* %a, align 8, !tbaa !0
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ret void
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}
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IR: Make metadata typeless in assembly
Now that `Metadata` is typeless, reflect that in the assembly. These
are the matching assembly changes for the metadata/value split in
r223802.
- Only use the `metadata` type when referencing metadata from a call
intrinsic -- i.e., only when it's used as a `Value`.
- Stop pretending that `ValueAsMetadata` is wrapped in an `MDNode`
when referencing it from call intrinsics.
So, assembly like this:
define @foo(i32 %v) {
call void @llvm.foo(metadata !{i32 %v}, metadata !0)
call void @llvm.foo(metadata !{i32 7}, metadata !0)
call void @llvm.foo(metadata !1, metadata !0)
call void @llvm.foo(metadata !3, metadata !0)
call void @llvm.foo(metadata !{metadata !3}, metadata !0)
ret void, !bar !2
}
!0 = metadata !{metadata !2}
!1 = metadata !{i32* @global}
!2 = metadata !{metadata !3}
!3 = metadata !{}
turns into this:
define @foo(i32 %v) {
call void @llvm.foo(metadata i32 %v, metadata !0)
call void @llvm.foo(metadata i32 7, metadata !0)
call void @llvm.foo(metadata i32* @global, metadata !0)
call void @llvm.foo(metadata !3, metadata !0)
call void @llvm.foo(metadata !{!3}, metadata !0)
ret void, !bar !2
}
!0 = !{!2}
!1 = !{i32* @global}
!2 = !{!3}
!3 = !{}
I wrote an upgrade script that handled almost all of the tests in llvm
and many of the tests in cfe (even handling many `CHECK` lines). I've
attached it (or will attach it in a moment if you're speedy) to PR21532
to help everyone update their out-of-tree testcases.
This is part of PR21532.
llvm-svn: 224257
2014-12-16 03:07:53 +08:00
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!0 = !{!2, !2, i64 0}
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!1 = !{!"Simple C/C++ TBAA", null}
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|
!2 = !{!"vtable pointer", !1}
|