[llvm] r325320 - [ThinLTO] Import global variables
Teresa Johnson via llvm-commits
llvm-commits at lists.llvm.org
Fri Mar 2 16:03:15 PST 2018
On Fri, Mar 2, 2018 at 3:43 PM, Chandler Carruth <chandlerc at gmail.com>
wrote:
> Sorry for the trouble, but this patch introduced multiple failures for us
> with ThinLTO. We're seeing link failures due to missing symbols as well as
> runtime failures.
>
> +Teresa Johnson <tejohnson at google.com> is going to work on getting test
> cases for these, but it'll probably be Monday or Tuesday when we can make
> progress there. For now, I've reverted this in r326638 so that the tree is
> back to green.
>
> Note that I'm also deeply troubled by the data race mentioned. Turning off
> threads doesn't fix a data race, it just hides it. The code really needs to
> be made thread safe and that should probably happen prior to re-committing
> the patch. I've reverted r325361 and r325362 as well for now, but they
> probably shouldn't be re-introduced and instead the data race issue fixed.
>
The description of it being a data race is incorrect - it was just
interleaved debug/trace output that is being checked (i.e. the list of
imported functions/variables emitted under debug option in the backends).
The backend parallelism needs to be turned down to 1 to get deterministic
messages from the otherwise parallel backends.
Teresa
> Thanks,
> -Chandler
>
> On Fri, Feb 16, 2018 at 8:58 AM Evgeny Leviant via llvm-commits <
> llvm-commits at lists.llvm.org> wrote:
>
>> See r325361
>> ________________________________________
>> От: David Green <David.Green at arm.com>
>> Отправлено: 16 февраля 2018 г. 19:37
>> Кому: Evgeny Leviant; llvm-commits
>> Копия: nd
>> Тема: Re: [llvm] r325320 - [ThinLTO] Import global variables
>>
>> Hello again,
>>
>> Looking through the llvm-lto2 help, perhaps adding -thinlto-threads=1 to
>> this specific test is all we need? At least to get the output correct.
>>
>> That seems to work here, it just depends whether -print-imports should be
>> thread safe or not?
>> Dave
>>
>> ________________________________________
>> From: David Green
>> Sent: 16 February 2018 16:20:15
>> To: Evgeny Leviant; llvm-commits
>> Cc: nd
>> Subject: Re: [llvm] r325320 - [ThinLTO] Import global variables
>>
>> Yeah, no probs. Like I said the error seems quite rare. If I spam this
>> command then it eventually fails (but it may not on your machine if it's an
>> thread-timing problem) (plus, sorry for the paths):
>>
>> /work/llvm-git/build/bin/llvm-lto2 run -save-temps -o
>> /work/llvm-git/build/test/Transforms/PGOProfile/Output/thinlto_samplepgo_icp3.ll.tmp3
>> /work/llvm-git/build/test/Transforms/PGOProfile/Output/thinlto_samplepgo_icp3.ll.tmp.bc
>> /work/llvm-git/build/test/Transforms/PGOProfile/Output/thinlto_samplepgo_icp3.ll.tmp2.bc
>> -r /work/llvm-git/build/test/Transforms/PGOProfile/Output/thinl
>> to_samplepgo_icp3.ll.tmp.bc,fptr,plx -r /work/llvm-git/build/test/Tran
>> sforms/PGOProfile/Output/thinlto_samplepgo_icp3.ll.tmp.bc,main,plx -r
>> /work/llvm-git/build/test/Transforms/PGOProfile/Output/thinl
>> to_samplepgo_icp3.ll.tmp2.bc,_Z6updatei,pl -r
>> /work/llvm-git/build/test/Transforms/PGOProfile/Output/thinl
>> to_samplepgo_icp3.ll.tmp2.bc,fptr,l -print-imports 2>&1 | tee output.txt
>> | /work/llvm-git/build/bin/FileCheck /work/llvm-git/test/Transforms
>> /PGOProfile/thinlto_samplepgo_icp3.ll --check-prefix=IMPORTS
>>
>> I just noticed that before this commit, it would print:
>> /work/llvm-git/test/Transforms/PGOProfile/thinlto_samplepgo_icp3.ll:
>> Import _ZL3foov.llvm.0 from /work/llvm-git/test/Transforms
>> /PGOProfile/Inputs/thinlto_samplepgo_icp3.ll
>>
>> i.e no second output ("fptr") for it to interleave.
>>
>> I've attached the thinlto_samplepgo_icp3.ll.tmp.bc and
>> thinlto_samplepgo_icp3.ll.tmp2.bc files, but I don't think they change
>> between passing and failing runs, it's just the output of the llvm-lto2
>> that is different.
>>
>> Let me know if I can do anything else,
>> Thanks,
>> Dave
>>
>>
>> From: Evgeny Leviant <eleviant at accesssoftek.com>
>> Sent: 16 February 2018 16:06
>> To: David Green; llvm-commits
>> Cc: nd
>> Subject: Re: [llvm] r325320 - [ThinLTO] Import global variables
>>
>> Hello David,
>>
>> I got single buildbot failure today, but I can't reproduce this failure
>> locally
>> Can you please send test artifacts (BC files, e.t.c) when it fails?
>> Thanks.
>> ________________________________________
>> От: David Green <David.Green at arm.com>
>> Отправлено: 16 февраля 2018 г. 19:04
>> Кому: Evgeny Leviant; llvm-commits
>> Копия: nd
>> Тема: Re: [llvm] r325320 - [ThinLTO] Import global variables
>>
>> Hello Eugene,
>>
>> After this patch, about 1 time in 20 I'm seeing failures in
>> Transforms/PGOProfile/thinlto_samplepgo_icp3.ll. When it passes it
>> prints something like:
>> /work/llvm-git/test/Transforms/PGOProfile/Inputs/thinlto_samplepgo_icp3.ll:
>> Import fptr from /work/llvm-git/test/Transforms
>> /PGOProfile/thinlto_samplepgo_icp3.ll
>> /work/llvm-git/test/Transforms/PGOProfile/thinlto_samplepgo_icp3.ll:
>> Import _ZL3foov.llvm.0 from /work/llvm-git/test/Transforms
>> /PGOProfile/Inputs/thinlto_samplepgo_icp3.ll
>>
>> When it fails it prints:
>> /work/llvm-git/test/Transforms/PGOProfile/Inputs/thinlto_sam
>> plepgo_icp3.ll/work/llvm-git/test/Transforms/PGOProfile/thinlto_samplepgo_icp3.ll:
>> Import : Import fptr_ZL3foov.llvm.0 from /work/llvm-git/test/Transforms
>> /PGOProfile/thinlto_samplepgo_icp3.ll from
>> /work/llvm-git/test/Transforms/PGOProfile/Inputs/thinlto_sam
>> plepgo_icp3.ll
>>
>> I cant reproduce before this patch, but don't see anything very thread-y
>> in here that may be causing this. Perhaps some knock-on affect? Perhaps
>> it's printing more output now?
>>
>> Any ideas?
>> Thanks,
>> Dave
>>
>>
>>
>> From: llvm-commits <llvm-commits-bounces at lists.llvm.org> on behalf of
>> Eugene Leviant via llvm-commits <llvm-commits at lists.llvm.org>
>> Sent: 16 February 2018 08:11
>> To: llvm-commits at lists.llvm.org
>> Subject: [llvm] r325320 - [ThinLTO] Import global variables
>>
>> Author: evgeny777
>> Date: Fri Feb 16 00:11:04 2018
>> New Revision: 325320
>>
>> URL: http://llvm.org/viewvc/llvm-project?rev=325320&view=rev
>> Log:
>> [ThinLTO] Import global variables
>>
>> Differential revision: https://reviews.llvm.org/D43077
>>
>> Added:
>> llvm/trunk/test/ThinLTO/X86/Inputs/globals-import-cf-baz.ll
>> llvm/trunk/test/ThinLTO/X86/globals-import-const-fold.ll
>> Modified:
>> llvm/trunk/lib/Linker/IRMover.cpp
>> llvm/trunk/lib/Transforms/IPO/FunctionImport.cpp
>> llvm/trunk/test/Transforms/FunctionImport/funcimport.ll
>>
>> Modified: llvm/trunk/lib/Linker/IRMover.cpp
>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Linker/IR
>> Mover.cpp?rev=325320&r1=325319&r2=325320&view=diff
>> ============================================================
>> ==================
>> --- llvm/trunk/lib/Linker/IRMover.cpp (original)
>> +++ llvm/trunk/lib/Linker/IRMover.cpp Fri Feb 16 00:11:04 2018
>> @@ -1051,14 +1051,10 @@ void IRLinker::prepareCompileUnitsForImp
>> ValueMap.MD()[CU->getRawEnumTypes()].reset(nullptr);
>> ValueMap.MD()[CU->getRawMacros()].reset(nullptr);
>> ValueMap.MD()[CU->getRawRetainedTypes()].reset(nullptr);
>> - // If we ever start importing global variable defs, we'll need to
>> - // add their DIGlobalVariable to the globals list on the imported
>> - // DICompileUnit. Confirm none are imported, and then we can
>> - // map the list of global variables to nullptr.
>> - assert(none_of(
>> - ValuesToLink,
>> - [](const GlobalValue *GV) { return
>> isa<GlobalVariable>(GV); }) &&
>> - "Unexpected importing of a GlobalVariable definition");
>> + // We import global variables only temporarily in order for
>> instcombine
>> + // and globalopt to perform constant folding and static constructor
>> + // evaluation. After that elim-avail-extern will covert imported
>> globals
>> + // back to declarations, so we don't need debug info for them.
>> ValueMap.MD()[CU->getRawGlobalVariables()].reset(nullptr);
>>
>> // Imported entities only need to be mapped in if they have local
>>
>> Modified: llvm/trunk/lib/Transforms/IPO/FunctionImport.cpp
>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transform
>> s/IPO/FunctionImport.cpp?rev=325320&r1=325319&r2=325320&view=diff
>> ============================================================
>> ==================
>> --- llvm/trunk/lib/Transforms/IPO/FunctionImport.cpp (original)
>> +++ llvm/trunk/lib/Transforms/IPO/FunctionImport.cpp Fri Feb 16 00:11:04
>> 2018
>> @@ -61,6 +61,7 @@ using namespace llvm;
>> #define DEBUG_TYPE "function-import"
>>
>> STATISTIC(NumImportedFunctions, "Number of functions imported");
>> +STATISTIC(NumImportedGlobalVars, "Number of global variables imported");
>> STATISTIC(NumImportedModules, "Number of modules imported from");
>> STATISTIC(NumDeadSymbols, "Number of dead stripped symbols in index");
>> STATISTIC(NumLiveSymbols, "Number of live symbols in index");
>> @@ -238,6 +239,33 @@ updateValueInfoForIndirectCalls(const Mo
>> return Index.getValueInfo(GUID);
>> }
>>
>> +static void computeImportForReferencedGlobals(
>> + const FunctionSummary &Summary, const GVSummaryMapTy
>> &DefinedGVSummaries,
>> + FunctionImporter::ImportMapTy &ImportList,
>> + StringMap<FunctionImporter::ExportSetTy> *ExportLists) {
>> + for (auto &VI : Summary.refs()) {
>> + if (DefinedGVSummaries.count(VI.getGUID())) {
>> + DEBUG(dbgs() << "Ref ignored! Target already in destination
>> module.\n");
>> + continue;
>> + }
>> +
>> + DEBUG(dbgs() << " ref -> " << VI.getGUID() << "\n");
>> +
>> + for (auto &RefSummary : VI.getSummaryList())
>> + if (RefSummary->getSummaryKind() == GlobalValueSummary::GlobalVarKind
>> &&
>> + // Don't try to import regular LTO summaries added to dummy
>> module.
>> + !RefSummary->modulePath().empty() &&
>> + !GlobalValue::isInterposableLinkage(RefSummary->linkage()) &&
>> + // For now we don't import global variables which have outgoing
>> + // refs. Otherwise we have to promote referenced
>> vars/functions.
>> + RefSummary->refs().empty()) {
>> + ImportList[RefSummary->modulePath()][VI.getGUID()] = 1;
>> + if (ExportLists)
>> + (*ExportLists)[RefSummary->modulePath()].insert(VI.getGUID());
>> + }
>> + }
>> +}
>> +
>> /// Compute the list of functions to import for a given caller. Mark
>> these
>> /// imported functions and the symbols they reference in their source
>> module as
>> /// exported from their source module.
>> @@ -247,6 +275,8 @@ static void computeImportForFunction(
>> SmallVectorImpl<EdgeInfo> &Worklist,
>> FunctionImporter::ImportMapTy &ImportList,
>> StringMap<FunctionImporter::ExportSetTy> *ExportLists = nullptr) {
>> + computeImportForReferencedGlobals(Summary, DefinedGVSummaries,
>> ImportList,
>> + ExportLists);
>> for (auto &Edge : Summary.calls()) {
>> ValueInfo VI = Edge.first;
>> DEBUG(dbgs() << " edge -> " << VI.getGUID() << " Threshold:" <<
>> Threshold
>> @@ -389,6 +419,34 @@ static void ComputeImportForModule(
>> }
>> }
>>
>> +#ifndef NDEBUG
>> +static bool isGlobalVarSummary(const ModuleSummaryIndex &Index,
>> + GlobalValue::GUID G) {
>> + if (const auto &VI = Index.getValueInfo(G)) {
>> + auto SL = VI.getSummaryList();
>> + if (!SL.empty())
>> + return SL[0]->getSummaryKind() == GlobalValueSummary::GlobalVarK
>> ind;
>> + }
>> + return false;
>> +}
>> +
>> +static GlobalValue::GUID getGUID(GlobalValue::GUID G) { return G; }
>> +
>> +static GlobalValue::GUID
>> +getGUID(const std::pair<const GlobalValue::GUID, unsigned> &P) {
>> + return P.first;
>> +}
>> +
>> +template <class T>
>> +unsigned numGlobalVarSummaries(const ModuleSummaryIndex &Index, T &Cont)
>> {
>> + unsigned NumGVS = 0;
>> + for (auto &V : Cont)
>> + if (isGlobalVarSummary(Index, getGUID(V)))
>> + ++NumGVS;
>> + return NumGVS;
>> +}
>> +#endif
>> +
>> /// Compute all the import and export for every module using the Index.
>> void llvm::ComputeCrossModuleImport(
>> const ModuleSummaryIndex &Index,
>> @@ -426,12 +484,17 @@ void llvm::ComputeCrossModuleImport(
>> for (auto &ModuleImports : ImportLists) {
>> auto ModName = ModuleImports.first();
>> auto &Exports = ExportLists[ModName];
>> - DEBUG(dbgs() << "* Module " << ModName << " exports " <<
>> Exports.size()
>> - << " functions. Imports from " <<
>> ModuleImports.second.size()
>> - << " modules.\n");
>> + unsigned NumGVS = numGlobalVarSummaries(Index, Exports);
>> + DEBUG(dbgs() << "* Module " << ModName << " exports "
>> + << Exports.size() - NumGVS << " functions and " <<
>> NumGVS
>> + << " vars. Imports from "
>> + << ModuleImports.second.size() << " modules.\n");
>> for (auto &Src : ModuleImports.second) {
>> auto SrcModName = Src.first();
>> - DEBUG(dbgs() << " - " << Src.second.size() << " functions imported
>> from "
>> + unsigned NumGVSPerMod = numGlobalVarSummaries(Index, Src.second);
>> + DEBUG(dbgs() << " - " << Src.second.size() - NumGVSPerMod
>> + << " functions imported from " << SrcModName << "\n");
>> + DEBUG(dbgs() << " - " << NumGVSPerMod << " global vars imported
>> from "
>> << SrcModName << "\n");
>> }
>> }
>> @@ -439,13 +502,17 @@ void llvm::ComputeCrossModuleImport(
>> }
>>
>> #ifndef NDEBUG
>> -static void dumpImportListForModule(StringRef ModulePath,
>> +static void dumpImportListForModule(const ModuleSummaryIndex &Index,
>> + StringRef ModulePath,
>> FunctionImporter::ImportMapTy
>> &ImportList) {
>> DEBUG(dbgs() << "* Module " << ModulePath << " imports from "
>> << ImportList.size() << " modules.\n");
>> for (auto &Src : ImportList) {
>> auto SrcModName = Src.first();
>> - DEBUG(dbgs() << " - " << Src.second.size() << " functions imported
>> from "
>> + unsigned NumGVSPerMod = numGlobalVarSummaries(Index, Src.second);
>> + DEBUG(dbgs() << " - " << Src.second.size() - NumGVSPerMod
>> + << " functions imported from " << SrcModName << "\n");
>> + DEBUG(dbgs() << " - " << NumGVSPerMod << " vars imported from "
>> << SrcModName << "\n");
>> }
>> }
>> @@ -465,7 +532,7 @@ void llvm::ComputeCrossModuleImportForMo
>> ComputeImportForModule(FunctionSummaryMap, Index, ImportList);
>>
>> #ifndef NDEBUG
>> - dumpImportListForModule(ModulePath, ImportList);
>> + dumpImportListForModule(Index, ModulePath, ImportList);
>> #endif
>> }
>>
>> @@ -492,7 +559,7 @@ void llvm::ComputeCrossModuleImportForMo
>> ImportList[Summary->modulePath()][GUID] = 1;
>> }
>> #ifndef NDEBUG
>> - dumpImportListForModule(ModulePath, ImportList);
>> + dumpImportListForModule(Index, ModulePath, ImportList);
>> #endif
>> }
>>
>> @@ -770,7 +837,7 @@ Expected<bool> FunctionImporter::importF
>> Module &DestModule, const FunctionImporter::ImportMapTy &ImportList)
>> {
>> DEBUG(dbgs() << "Starting import for Module "
>> << DestModule.getModuleIdentifier() << "\n");
>> - unsigned ImportedCount = 0;
>> + unsigned ImportedCount = 0, ImportedGVCount = 0;
>>
>> IRMover Mover(DestModule);
>> // Do the actual import of functions now, one Module at a time
>> @@ -830,7 +897,7 @@ Expected<bool> FunctionImporter::importF
>> if (Import) {
>> if (Error Err = GV.materialize())
>> return std::move(Err);
>> - GlobalsToImport.insert(&GV);
>> + ImportedGVCount += GlobalsToImport.insert(&GV);
>> }
>> }
>> for (GlobalAlias &GA : SrcModule->aliases()) {
>> @@ -887,9 +954,14 @@ Expected<bool> FunctionImporter::importF
>> NumImportedModules++;
>> }
>>
>> - NumImportedFunctions += ImportedCount;
>> + NumImportedFunctions += (ImportedCount - ImportedGVCount);
>> + NumImportedGlobalVars += ImportedGVCount;
>>
>> - DEBUG(dbgs() << "Imported " << ImportedCount << " functions for Module
>> "
>> + DEBUG(dbgs() << "Imported " << ImportedCount - ImportedGVCount
>> + << " functions for Module " <<
>> DestModule.getModuleIdentifier()
>> + << "\n");
>> + DEBUG(dbgs() << "Imported " << ImportedGVCount
>> + << " global variables for Module "
>> << DestModule.getModuleIdentifier() << "\n");
>> return ImportedCount;
>> }
>>
>> Added: llvm/trunk/test/ThinLTO/X86/Inputs/globals-import-cf-baz.ll
>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/ThinLTO/
>> X86/Inputs/globals-import-cf-baz.ll?rev=325320&view=auto
>> ============================================================
>> ==================
>> --- llvm/trunk/test/ThinLTO/X86/Inputs/globals-import-cf-baz.ll (added)
>> +++ llvm/trunk/test/ThinLTO/X86/Inputs/globals-import-cf-baz.ll Fri Feb
>> 16 00:11:04 2018
>> @@ -0,0 +1,4 @@
>> +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
>> +target triple = "x86_64-pc-linux-gnu"
>> +
>> + at baz = local_unnamed_addr constant i32 10, align 4
>>
>> Added: llvm/trunk/test/ThinLTO/X86/globals-import-const-fold.ll
>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/ThinLTO/
>> X86/globals-import-const-fold.ll?rev=325320&view=auto
>> ============================================================
>> ==================
>> --- llvm/trunk/test/ThinLTO/X86/globals-import-const-fold.ll (added)
>> +++ llvm/trunk/test/ThinLTO/X86/globals-import-const-fold.ll Fri Feb 16
>> 00:11:04 2018
>> @@ -0,0 +1,23 @@
>> +; RUN: opt -module-summary %s -o %t1.bc
>> +; RUN: opt -module-summary %p/Inputs/globals-import-cf-baz.ll -o %t2.bc
>> +; RUN: llvm-lto -thinlto-action=thinlink %t1.bc %t2.bc -o %t3.index.bc
>> +
>> +; RUN: llvm-lto -thinlto-action=import %t1.bc %t2.bc
>> -thinlto-index=%t3.index.bc
>> +; RUN: llvm-dis %t1.bc.thinlto.imported.bc -o - | FileCheck
>> --check-prefix=IMPORT %s
>> +; RUN: llvm-lto -thinlto-action=optimize %t1.bc.thinlto.imported.bc -o
>> %t1.bc.thinlto.opt.bc
>> +; RUN: llvm-dis %t1.bc.thinlto.opt.bc -o - | FileCheck
>> --check-prefix=OPTIMIZE %s
>> +
>> +; IMPORT: @baz = available_externally local_unnamed_addr constant i32 10
>> +
>> +; OPTIMIZE: define i32 @main()
>> +; OPTIMIZE-NEXT: ret i32 10
>> +
>> +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
>> +target triple = "x86_64-pc-linux-gnu"
>> +
>> + at baz = external local_unnamed_addr constant i32, align 4
>> +
>> +define i32 @main() local_unnamed_addr {
>> + %1 = load i32, i32* @baz, align 4
>> + ret i32 %1
>> +}
>>
>> Modified: llvm/trunk/test/Transforms/FunctionImport/funcimport.ll
>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transfor
>> ms/FunctionImport/funcimport.ll?rev=325320&r1=325319&r2=325320&view=diff
>> ============================================================
>> ==================
>> --- llvm/trunk/test/Transforms/FunctionImport/funcimport.ll (original)
>> +++ llvm/trunk/test/Transforms/FunctionImport/funcimport.ll Fri Feb 16
>> 00:11:04 2018
>> @@ -7,7 +7,8 @@
>> ; RUN: opt -function-import -stats -print-imports
>> -enable-import-metadata -summary-file %t3.thinlto.bc %t.bc -S 2>&1 |
>> FileCheck %s --check-prefix=CHECK --check-prefix=INSTLIMDEF
>> ; Try again with new pass manager
>> ; RUN: opt -passes='function-import' -stats -print-imports
>> -enable-import-metadata -summary-file %t3.thinlto.bc %t.bc -S 2>&1 |
>> FileCheck %s --check-prefix=CHECK --check-prefix=INSTLIMDEF
>> -; "-stats" requires +Asserts.
>> +; RUN: opt -passes='function-import' -debug-only=function-import
>> -enable-import-metadata -summary-file %t3.thinlto.bc %t.bc -S 2>&1 |
>> FileCheck %s --check-prefix=DUMP
>> +; "-stats" and "-debug-only" require +Asserts.
>> ; REQUIRES: asserts
>>
>> ; Test import with smaller instruction limit
>> @@ -80,7 +81,7 @@ declare void @callfuncptr(...) #1
>>
>> ; Ensure that all uses of local variable @P which has used in setfuncptr
>> ; and callfuncptr are to the same promoted/renamed global.
>> -; CHECK-DAG: @P.llvm.{{.*}} = external hidden global void ()*
>> +; CHECK-DAG: @P.llvm.{{.*}} = available_externally hidden global void
>> ()* null
>> ; CHECK-DAG: %0 = load void ()*, void ()** @P.llvm.
>> ; CHECK-DAG: store void ()* @staticfunc2.llvm.{{.*}}, void ()** @P.llvm.
>>
>> @@ -107,6 +108,8 @@ declare void @variadic(...)
>>
>> ; INSTLIMDEF-DAG: Import globalfunc2
>> ; INSTLIMDEF-DAG: 13 function-import - Number of functions imported
>> +; INSTLIMDEF-DAG: 4 function-import - Number of global variables imported
>> +
>> ; CHECK-DAG: !0 = !{!"{{.*}}/Inputs/funcimport.ll"}
>>
>> ; The actual GUID values will depend on path to test.
>> @@ -142,3 +145,9 @@ declare void @variadic(...)
>> ; GUID-DAG: GUID {{.*}} is linkoncealias
>> ; GUID-DAG: GUID {{.*}} is callfuncptr
>> ; GUID-DAG: GUID {{.*}} is linkoncefunc
>> +
>> +; DUMP: Module [[M1:.*]] imports from 1 module
>> +; DUMP-NEXT: 13 functions imported from [[M2:.*]]
>> +; DUMP-NEXT: 4 vars imported from [[M2]]
>> +; DUMP: Imported 13 functions for Module [[M1]]
>> +; DUMP-NEXT: Imported 4 global variables for Module [[M1]]
>>
>>
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>
--
Teresa Johnson | Software Engineer | tejohnson at google.com | 408-460-2413
<(408)%20460-2413>
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