mirror of https://github.com/microsoft/clang.git
[ThinLTO/CFI] Include TYPE_ID summaries into GLOBALVAL_SUMMARY_BLOCK
Summary: TypeID summaries are used by CFI and need to be serialized by ThinLTO indexing for later use by LTO Backend. Reviewers: tejohnson, pcc Subscribers: mehdi_amini, inglorion, eraman, hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D42611 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@325182 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vitaly Buka
parent
06fcaea8ad
commit
e954e43b6a
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@ -96,6 +96,7 @@ if( NOT CLANG_BUILT_STANDALONE )
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llvm-bcanalyzer
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llvm-cat
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llvm-dis
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llvm-lto2
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llvm-modextract
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llvm-nm
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llvm-objdump
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@ -0,0 +1,101 @@
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; REQUIRES: x86-registered-target
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; Backend test for distribute ThinLTO with CFI.
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; It additionally enables -fwhole-program-vtables to get more information in
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; TYPE_IDs of GLOBALVAL_SUMMARY_BLOCK.
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; RUN: opt -thinlto-bc -o %t.o %s
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; RUN: llvm-lto2 run -thinlto-distributed-indexes %t.o \
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; RUN: -o %t2.index \
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; RUN: -r=%t.o,test,px \
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; RUN: -r=%t.o,_ZN1A1nEi,p \
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; RUN: -r=%t.o,_ZN1B1fEi,p \
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; RUN: -r=%t.o,_ZN1C1fEi,p \
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; RUN: -r=%t.o,_ZTV1B, \
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; RUN: -r=%t.o,_ZTV1C, \
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; RUN: -r=%t.o,_ZN1A1nEi, \
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; RUN: -r=%t.o,_ZN1B1fEi, \
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; RUN: -r=%t.o,_ZN1C1fEi, \
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; RUN: -r=%t.o,_ZTV1B,px \
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; RUN: -r=%t.o,_ZTV1C,px
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; Ensure that typeids are in the index.
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; RUN: llvm-bcanalyzer -dump %t.o.thinlto.bc | FileCheck %s
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; CHECK-LABEL: <GLOBALVAL_SUMMARY_BLOCK
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; CHECK: <TYPE_ID op0=0 op1=6 op2=4 op3=7 op4=0 op5=0 op6=0 op7=0 op8=0 op9=0 op10=6 op11=0 op12=0 op13=8 op14=1 op15=6 op16=9 op17=0/>
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; CHECK-LABEL: </GLOBALVAL_SUMMARY_BLOCK
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; CHECK-LABEL: <STRTAB_BLOCK
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; CHECK: blob data = '_ZTS1A_ZN1A1nEi'
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; CHECK-LABEL: </STRTAB_BLOCK
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; RUN: %clang_cc1 -triple x86_64-grtev4-linux-gnu \
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; RUN: -emit-obj -fthinlto-index=%t.o.thinlto.bc \
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; RUN: -emit-llvm -o - -x ir %t.o | FileCheck %s --check-prefixes=CHECK-IR
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; Check that backend does not fail generating native code.
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; RUN: %clang_cc1 -triple x86_64-grtev4-linux-gnu \
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; RUN: -emit-obj -fthinlto-index=%t.o.thinlto.bc \
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; RUN: -o %t.native.o -x ir %t.o
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-grtev4-linux-gnu"
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%struct.A = type { i32 (...)** }
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%struct.B = type { %struct.A }
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%struct.C = type { %struct.A }
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@_ZTV1B = constant { [4 x i8*] } { [4 x i8*] [i8* null, i8* undef, i8* bitcast (i32 (%struct.B*, i32)* @_ZN1B1fEi to i8*), i8* bitcast (i32 (%struct.A*, i32)* @_ZN1A1nEi to i8*)] }, !type !0, !type !1
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@_ZTV1C = constant { [4 x i8*] } { [4 x i8*] [i8* null, i8* undef, i8* bitcast (i32 (%struct.C*, i32)* @_ZN1C1fEi to i8*), i8* bitcast (i32 (%struct.A*, i32)* @_ZN1A1nEi to i8*)] }, !type !0, !type !2
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; CHECK-IR-LABEL: define i32 @test
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define i32 @test(%struct.A* %obj, i32 %a) {
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entry:
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%0 = bitcast %struct.A* %obj to i8**
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%vtable5 = load i8*, i8** %0
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; Check that the call was devirtualized.
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; CHECK-IR: %call = tail call i32 @_ZN1A1nEi
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%1 = tail call { i8*, i1 } @llvm.type.checked.load(i8* %vtable5, i32 8, metadata !"_ZTS1A")
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%2 = extractvalue { i8*, i1 } %1, 1
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br i1 %2, label %cont, label %trap
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trap:
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tail call void @llvm.trap()
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unreachable
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cont:
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%3 = extractvalue { i8*, i1 } %1, 0
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%4 = bitcast i8* %3 to i32 (%struct.A*, i32)*
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%call = tail call i32 %4(%struct.A* nonnull %obj, i32 %a)
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%vtable16 = load i8*, i8** %0
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%5 = tail call { i8*, i1 } @llvm.type.checked.load(i8* %vtable16, i32 0, metadata !"_ZTS1A")
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%6 = extractvalue { i8*, i1 } %5, 1
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br i1 %6, label %cont2, label %trap
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cont2:
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%7 = extractvalue { i8*, i1 } %5, 0
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%8 = bitcast i8* %7 to i32 (%struct.A*, i32)*
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; Check that traps are conditional. Invalid TYPE_ID can cause
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; unconditional traps.
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; CHECK-IR: br i1 {{.*}}, label %trap
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; We still have to call it as virtual.
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; CHECK-IR: %call3 = tail call i32 %8
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%call3 = tail call i32 %8(%struct.A* nonnull %obj, i32 %call)
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ret i32 %call3
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}
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; CHECK-IR-LABEL: ret i32
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; CHECK-IR-LABEL: }
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declare { i8*, i1 } @llvm.type.checked.load(i8*, i32, metadata)
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declare void @llvm.trap()
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declare i32 @_ZN1B1fEi(%struct.B* %this, i32 %a)
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declare i32 @_ZN1A1nEi(%struct.A* %this, i32 %a)
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declare i32 @_ZN1C1fEi(%struct.C* %this, i32 %a)
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!0 = !{i64 16, !"_ZTS1A"}
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!1 = !{i64 16, !"_ZTS1B"}
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!2 = !{i64 16, !"_ZTS1C"}
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@ -0,0 +1,67 @@
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; REQUIRES: x86-registered-target
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; Backend test for distribute ThinLTO with CFI.
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; RUN: opt -thinlto-bc -o %t.o %s
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; RUN: llvm-lto2 run -thinlto-distributed-indexes %t.o \
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; RUN: -o %t2.index \
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; RUN: -r=%t.o,test,px \
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; RUN: -r=%t.o,_ZTV1B, \
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; RUN: -r=%t.o,_ZN1B1fEi, \
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; RUN: -r=%t.o,_ZTV1B,px
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; Check that typeids are in the index.
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; RUN: llvm-bcanalyzer -dump %t.o.thinlto.bc | FileCheck %s
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; CHECK-LABEL: <GLOBALVAL_SUMMARY_BLOCK
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; CHECK: <TYPE_ID op0=0 op1=6 op2=3 op3=0 op4=0 op5=0 op6=0 op7=0/>
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; CHECK-LABEL: </GLOBALVAL_SUMMARY_BLOCK
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; CHECK-LABEL: <STRTAB_BLOCK
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; CHECK: blob data = '_ZTS1A'
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; CHECK-LABEL: </STRTAB_BLOCK
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; RUN: %clang_cc1 -triple x86_64-grtev4-linux-gnu \
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; RUN: -emit-obj -fthinlto-index=%t.o.thinlto.bc \
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; RUN: -emit-llvm -o - -x ir %t.o | FileCheck %s --check-prefixes=CHECK-IR
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; Ensure that backend does not fail generating native code.
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; RUN: %clang_cc1 -triple x86_64-grtev4-linux-gnu \
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; RUN: -emit-obj -fthinlto-index=%t.o.thinlto.bc \
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; RUN: -o %t.native.o -x ir %t.o
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-grtev4-linux-gnu"
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%struct.B = type { %struct.A }
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%struct.A = type { i32 (...)** }
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@_ZTV1B = constant { [3 x i8*] } { [3 x i8*] [i8* undef, i8* undef, i8* undef] }, !type !0
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; CHECK-IR-LABEL: define void @test
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define void @test(i8* %b) {
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entry:
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; Ensure that traps are conditional. Invalid TYPE_ID can cause
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; unconditional traps.
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; CHECK-IR: br i1 {{.*}}, label %trap
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%0 = bitcast i8* %b to i8**
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%vtable2 = load i8*, i8** %0
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%1 = tail call i1 @llvm.type.test(i8* %vtable2, metadata !"_ZTS1A")
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br i1 %1, label %cont, label %trap
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trap:
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tail call void @llvm.trap()
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unreachable
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cont:
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; CHECK-IR-LABEL: ret void
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ret void
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}
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; CHECK-IR-LABEL: }
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declare i1 @llvm.type.test(i8*, metadata)
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declare void @llvm.trap()
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declare i32 @_ZN1B1fEi(%struct.B* %this, i32 %a)
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!0 = !{i64 16, !"_ZTS1A"}
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!1 = !{i64 16, !"_ZTS1B"}
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@ -0,0 +1,21 @@
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; REQUIRES: x86-registered-target
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; Trivial test for distributes ThinLTO
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; RUN: opt -thinlto-bc -o %t.o %s
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; RUN: llvm-lto2 run -thinlto-distributed-indexes %t.o \
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; RUN: -o %t2.index \
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; RUN: -r=%t.o,main,px
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; RUN: %clang_cc1 -triple x86_64-grtev4-linux-gnu \
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; RUN: -emit-obj -fthinlto-index=%t.o.thinlto.bc \
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; RUN: -o %t.native.o -x ir %t.o
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-grtev4-linux-gnu"
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define i32 @main() {
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entry:
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ret i32 0
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}
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