[clang] a3a0f59 - Revert "Correctly compute conversion seq for args to fn with reversed param order (#68999)"

2023-10-18 Thread Dmitry Chernenkov via cfe-commits 

Author: Dmitry Chernenkov
Date: 2023-10-18T14:13:48Z
New Revision: a3a0f59a1e1cb0ac02f06b19f730ea05a6541c96

URL: 
https://github.com/llvm/llvm-project/commit/a3a0f59a1e1cb0ac02f06b19f730ea05a6541c96
DIFF: 
https://github.com/llvm/llvm-project/commit/a3a0f59a1e1cb0ac02f06b19f730ea05a6541c96.diff

LOG: Revert "Correctly compute conversion seq for args to fn with reversed 
param order (#68999)"

This reverts commit e6d0b126c824222fca2f31a2ba571c2ee2bb4760.

See PR for reason

https://github.com/llvm/llvm-project/pull/68999#issuecomment-1768541660

Added: 


Modified: 
clang/docs/ReleaseNotes.rst
clang/lib/Sema/SemaOverload.cpp
clang/test/CXX/over/over.match/over.match.funcs/over.match.oper/p3-2a.cpp

Removed: 




diff  --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 443325bb0d1e17d..81cbfd90155fe0b 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -117,8 +117,6 @@ C++ Language Changes
 
 C++20 Feature Support
 ^
-- Fix a bug in conversion sequence of arguments to a function with reversed 
parameter order.
-  Fixes `GH `_.
 
 C++23 Feature Support
 ^

diff  --git a/clang/lib/Sema/SemaOverload.cpp b/clang/lib/Sema/SemaOverload.cpp
index c271cebb9eb638f..ce78994e6553814 100644
--- a/clang/lib/Sema/SemaOverload.cpp
+++ b/clang/lib/Sema/SemaOverload.cpp
@@ -7688,7 +7688,7 @@ bool Sema::CheckNonDependentConversions(
 QualType ParamType = ParamTypes[I + Offset];
 if (!ParamType->isDependentType()) {
   unsigned ConvIdx = PO == OverloadCandidateParamOrder::Reversed
- ? Args.size() - 1 - (ThisConversions + I)
+ ? 0
  : (ThisConversions + I);
   Conversions[ConvIdx]
 = TryCopyInitialization(*this, Args[I], ParamType,

diff  --git 
a/clang/test/CXX/over/over.match/over.match.funcs/over.match.oper/p3-2a.cpp 
b/clang/test/CXX/over/over.match/over.match.funcs/over.match.oper/p3-2a.cpp
index 02fe37dc1be5058..5c6804eb7726b5f 100644
--- a/clang/test/CXX/over/over.match/over.match.funcs/over.match.oper/p3-2a.cpp
+++ b/clang/test/CXX/over/over.match/over.match.funcs/over.match.oper/p3-2a.cpp
@@ -324,41 +324,6 @@ bool x = X() == X(); // expected-warning {{ambiguous}}
 }
 } // namespace P2468R2
 
-namespace GH53954{
-namespace test1 {
-struct P {
-template 
-friend bool operator==(const P&, const T&); // expected-note {{candidate}} 
\
-  // expected-note {{reversed 
parameter order}}
-};
-struct A : public P {};
-struct B : public P {};
-bool check(A a, B b) { return a == b; } // expected-error {{ '==' is 
ambiguous}}
-}
-
-namespace test2 {
-struct P {
-template 
-friend bool operator==(const T&, const P&); // expected-note {{candidate}} 
\
-// expected-note {{reversed 
parameter order}}
-};
-struct A : public P {};
-struct B : public P {};
-bool check(A a, B b) { return a == b; } // expected-error {{ '==' is 
ambiguous}}
-}
-
-namespace test3 {
-struct P {
-  template
-  bool operator==(const S &) const; // expected-note {{candidate}} \
-// expected-note {{reversed parameter 
order}}
-};
-struct A : public P {};
-struct B : public P {};
-bool check(A a, B b) { return a == b; } // expected-error {{ '==' is 
ambiguous}}
-}
-}
-
 #else // NO_ERRORS
 
 namespace problem_cases {



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[clang] 3b34d69 - Revert "For #64088: mark vtable as used if we might emit a reference to it."

2023-07-28 Thread Dmitry Chernenkov via cfe-commits 

Author: Dmitry Chernenkov
Date: 2023-07-28T10:49:53Z
New Revision: 3b34d69ac7a643742364be3591b324ddd14ef9aa

URL: 
https://github.com/llvm/llvm-project/commit/3b34d69ac7a643742364be3591b324ddd14ef9aa
DIFF: 
https://github.com/llvm/llvm-project/commit/3b34d69ac7a643742364be3591b324ddd14ef9aa.diff

LOG: Revert "For #64088: mark vtable as used if we might emit a reference to 
it."

This reverts commit b6847edfc235829b37dd6d734ef5bbfa0a58b6fc.

Added: 


Modified: 
clang/lib/Sema/SemaCast.cpp
clang/test/CodeGenCXX/dynamic-cast-exact.cpp

Removed: 




diff  --git a/clang/lib/Sema/SemaCast.cpp b/clang/lib/Sema/SemaCast.cpp
index b338d601db7397..d65ecf52c52310 100644
--- a/clang/lib/Sema/SemaCast.cpp
+++ b/clang/lib/Sema/SemaCast.cpp
@@ -935,14 +935,6 @@ void CastOperation::CheckDynamicCast() {
   << isClangCL;
   }
 
-  // For a dynamic_cast to a final type, IR generation might emit a reference
-  // to the vtable.
-  if (DestRecord) {
-auto *DestDecl = DestRecord->getAsCXXRecordDecl();
-if (DestDecl->isEffectivelyFinal())
-  Self.MarkVTableUsed(OpRange.getBegin(), DestDecl);
-  }
-
   // Done. Everything else is run-time checks.
   Kind = CK_Dynamic;
 }

diff  --git a/clang/test/CodeGenCXX/dynamic-cast-exact.cpp 
b/clang/test/CodeGenCXX/dynamic-cast-exact.cpp
index bd283e85101b4b..676aa975a72686 100644
--- a/clang/test/CodeGenCXX/dynamic-cast-exact.cpp
+++ b/clang/test/CodeGenCXX/dynamic-cast-exact.cpp
@@ -76,12 +76,3 @@ H *exact_multi(A *a) {
   // CHECK: phi ptr [ %[[RESULT]], %[[LABEL_NOTNULL]] ], [ null, 
%[[LABEL_FAILED]] ]
   return dynamic_cast(a);
 }
-
-namespace GH64088 {
-  // Ensure we mark the B vtable as used here, because we're going to emit a
-  // reference to it.
-  // CHECK: define {{.*}} @_ZN7GH640881BD0
-  struct A { virtual ~A(); };
-  struct B final : A { virtual ~B() = default; };
-  B *cast(A *p) { return dynamic_cast(p); }
-}



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[clang] 9a370a1 - Reland "For #64088: mark vtable as used if we might emit a reference to it."

2023-08-02 Thread Dmitry Chernenkov via cfe-commits 

Author: Dmitry Chernenkov
Date: 2023-08-02T08:52:00Z
New Revision: 9a370a1e586ca0ee1367ea58d7d61b8a86f660a3

URL: 
https://github.com/llvm/llvm-project/commit/9a370a1e586ca0ee1367ea58d7d61b8a86f660a3
DIFF: 
https://github.com/llvm/llvm-project/commit/9a370a1e586ca0ee1367ea58d7d61b8a86f660a3.diff

LOG: Reland "For #64088: mark vtable as used if we might emit a reference to 
it."

This reverts commit 3b34d69ac7a643742364be3591b324ddd14ef9aa.

Added: 


Modified: 
clang/lib/Sema/SemaCast.cpp
clang/test/CodeGenCXX/dynamic-cast-exact.cpp

Removed: 




diff  --git a/clang/lib/Sema/SemaCast.cpp b/clang/lib/Sema/SemaCast.cpp
index d65ecf52c52310d..b338d601db73973 100644
--- a/clang/lib/Sema/SemaCast.cpp
+++ b/clang/lib/Sema/SemaCast.cpp
@@ -935,6 +935,14 @@ void CastOperation::CheckDynamicCast() {
   << isClangCL;
   }
 
+  // For a dynamic_cast to a final type, IR generation might emit a reference
+  // to the vtable.
+  if (DestRecord) {
+auto *DestDecl = DestRecord->getAsCXXRecordDecl();
+if (DestDecl->isEffectivelyFinal())
+  Self.MarkVTableUsed(OpRange.getBegin(), DestDecl);
+  }
+
   // Done. Everything else is run-time checks.
   Kind = CK_Dynamic;
 }

diff  --git a/clang/test/CodeGenCXX/dynamic-cast-exact.cpp 
b/clang/test/CodeGenCXX/dynamic-cast-exact.cpp
index 676aa975a72686a..bd283e85101b4b6 100644
--- a/clang/test/CodeGenCXX/dynamic-cast-exact.cpp
+++ b/clang/test/CodeGenCXX/dynamic-cast-exact.cpp
@@ -76,3 +76,12 @@ H *exact_multi(A *a) {
   // CHECK: phi ptr [ %[[RESULT]], %[[LABEL_NOTNULL]] ], [ null, 
%[[LABEL_FAILED]] ]
   return dynamic_cast(a);
 }
+
+namespace GH64088 {
+  // Ensure we mark the B vtable as used here, because we're going to emit a
+  // reference to it.
+  // CHECK: define {{.*}} @_ZN7GH640881BD0
+  struct A { virtual ~A(); };
+  struct B final : A { virtual ~B() = default; };
+  B *cast(A *p) { return dynamic_cast(p); }
+}



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[clang] 3048c9e - Revert "Recommit [Modules] Remove unnecessary check when generating name lookup table in ASTWriter"

2023-03-24 Thread Dmitry Chernenkov via cfe-commits 

Author: Dmitry Chernenkov
Date: 2023-03-24T07:59:04Z
New Revision: 3048c9e15498161572483e3d4b81c9c37bf2770f

URL: 
https://github.com/llvm/llvm-project/commit/3048c9e15498161572483e3d4b81c9c37bf2770f
DIFF: 
https://github.com/llvm/llvm-project/commit/3048c9e15498161572483e3d4b81c9c37bf2770f.diff

LOG: Revert "Recommit [Modules] Remove unnecessary check when generating name 
lookup table in ASTWriter"

This reverts commit 25557aa38a0dab76f5b7a4518942f69d879693c0.

Added: 


Modified: 
clang/include/clang/Serialization/ASTWriter.h
clang/lib/Serialization/ASTWriter.cpp

Removed: 
clang/test/Modules/pr61065.cppm



diff  --git a/clang/include/clang/Serialization/ASTWriter.h 
b/clang/include/clang/Serialization/ASTWriter.h
index d31fa38b93825..09ee1744e8945 100644
--- a/clang/include/clang/Serialization/ASTWriter.h
+++ b/clang/include/clang/Serialization/ASTWriter.h
@@ -514,6 +514,7 @@ class ASTWriter : public ASTDeserializationListener,
   void WriteTypeAbbrevs();
   void WriteType(QualType T);
 
+  bool isLookupResultExternal(StoredDeclsList &Result, DeclContext *DC);
   bool isLookupResultEntirelyExternal(StoredDeclsList &Result, DeclContext 
*DC);
 
   void GenerateNameLookupTable(const DeclContext *DC,

diff  --git a/clang/lib/Serialization/ASTWriter.cpp 
b/clang/lib/Serialization/ASTWriter.cpp
index 3e40812a9a0ba..31e44b52929f4 100644
--- a/clang/lib/Serialization/ASTWriter.cpp
+++ b/clang/lib/Serialization/ASTWriter.cpp
@@ -3849,6 +3849,12 @@ class ASTDeclContextNameLookupTrait {
 
 } // namespace
 
+bool ASTWriter::isLookupResultExternal(StoredDeclsList &Result,
+   DeclContext *DC) {
+  return Result.hasExternalDecls() &&
+ DC->hasNeedToReconcileExternalVisibleStorage();
+}
+
 bool ASTWriter::isLookupResultEntirelyExternal(StoredDeclsList &Result,
DeclContext *DC) {
   for (auto *D : Result.getLookupResult())
@@ -3891,7 +3897,8 @@ ASTWriter::GenerateNameLookupTable(const DeclContext 
*ConstDC,
 // don't need to write an entry for the name at all. If we can't
 // write out a lookup set without performing more deserialization,
 // just skip this entry.
-if (isLookupResultEntirelyExternal(Result, DC))
+if (isLookupResultExternal(Result, DC) &&
+isLookupResultEntirelyExternal(Result, DC))
   continue;
 
 // We also skip empty results. If any of the results could be external and

diff  --git a/clang/test/Modules/pr61065.cppm b/clang/test/Modules/pr61065.cppm
deleted file mode 100644
index 44fa3679974ad..0
--- a/clang/test/Modules/pr61065.cppm
+++ /dev/null
@@ -1,55 +0,0 @@
-// From https://github.com/llvm/llvm-project/issues/61065
-// RUN: rm -rf %t
-// RUN: mkdir -p %t
-// RUN: split-file %s %t
-//
-// RUN: %clang_cc1 -std=c++20 %t/a.cppm -emit-module-interface -o %t/a.pcm
-// RUN: %clang_cc1 -std=c++20 %t/b.cppm -emit-module-interface -o %t/b.pcm \
-// RUN: -fprebuilt-module-path=%t
-// RUN: %clang_cc1 -std=c++20 %t/c.cppm -emit-module-interface -o %t/c.pcm \
-// RUN: -fprebuilt-module-path=%t
-// RUN: %clang_cc1 -std=c++20 %t/d.cpp -fsyntax-only -verify 
-fprebuilt-module-path=%t
-
-//--- a.cppm
-export module a;
-
-struct base {
-   base(int) {}
-};
-
-export struct a : base {
-   using base::base;
-};
-
-//--- b.cppm
-export module b;
-
-import a;
-
-a b() {
-   return a(1);
-}
-
-//--- c.cppm
-export module c;
-
-import a;
-import b;
-
-struct noncopyable {
-   noncopyable(noncopyable const &) = delete;
-noncopyable() = default;
-};
-
-export struct c {
-   noncopyable c0;
-   a c1 = 43;
-c() = default;
-};
-
-//--- d.cpp
-// expected-no-diagnostics
-import c;
-void d() {
-c _;
-}



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[clang] a988373 - [clang] Fix include for 7ead2d8c7e

2024-06-13 Thread Dmitry Chernenkov via cfe-commits 

Author: Dmitry Chernenkov
Date: 2024-06-13T14:26:23Z
New Revision: a9883739571f0adbe33219a74a934be7f8bd4f62

URL: 
https://github.com/llvm/llvm-project/commit/a9883739571f0adbe33219a74a934be7f8bd4f62
DIFF: 
https://github.com/llvm/llvm-project/commit/a9883739571f0adbe33219a74a934be7f8bd4f62.diff

LOG: [clang] Fix include for 7ead2d8c7e

clang/lib/CodeGen/MCDCState.h:33:11: error: no template named 'SmallVector' in 
namespace 'llvm'
   33 | llvm::SmallVector> Indices;
  | ~~^

Added: 


Modified: 
clang/lib/CodeGen/MCDCState.h

Removed: 




diff  --git a/clang/lib/CodeGen/MCDCState.h b/clang/lib/CodeGen/MCDCState.h
index 32ef578f53c5f..e0dd28ff90ed1 100644
--- a/clang/lib/CodeGen/MCDCState.h
+++ b/clang/lib/CodeGen/MCDCState.h
@@ -14,6 +14,7 @@
 #define LLVM_CLANG_LIB_CODEGEN_MCDCSTATE_H
 
 #include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/SmallVector.h"
 #include "llvm/ProfileData/Coverage/MCDCTypes.h"
 
 namespace clang {



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[clang] d924a9b - Revert "[InstrPGO] Support cold function coverage instrumentation (#109837)"

2024-10-31 Thread Dmitry Chernenkov via cfe-commits 

Author: Dmitry Chernenkov
Date: 2024-10-31T10:55:17Z
New Revision: d924a9ba03a05b417676e84f6c81aac44f907f71

URL: 
https://github.com/llvm/llvm-project/commit/d924a9ba03a05b417676e84f6c81aac44f907f71
DIFF: 
https://github.com/llvm/llvm-project/commit/d924a9ba03a05b417676e84f6c81aac44f907f71.diff

LOG: Revert "[InstrPGO] Support cold function coverage instrumentation 
(#109837)"

This reverts commit e517cfc531886bf6ed64b4e7109bb3141ac7f430.

Added: 


Modified: 
clang/include/clang/Driver/Options.td
clang/lib/Driver/ToolChain.cpp
clang/lib/Driver/ToolChains/Clang.cpp
llvm/lib/Passes/PassBuilderPipelines.cpp
llvm/lib/Transforms/Instrumentation/PGOInstrumentation.cpp

Removed: 
clang/test/CodeGen/pgo-cold-function-coverage.c
clang/test/Driver/fprofile-generate-cold-function-coverage.c
llvm/test/Transforms/PGOProfile/instr-gen-cold-function.ll



diff  --git a/clang/include/clang/Driver/Options.td 
b/clang/include/clang/Driver/Options.td
index 2b9ee1a0e669ed..5115b3d3e09c7c 100644
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -1786,12 +1786,6 @@ defm debug_info_for_profiling : 
BoolFOption<"debug-info-for-profiling",
   PosFlag,
   NegFlag>;
-def fprofile_generate_cold_function_coverage : Flag<["-"], 
"fprofile-generate-cold-function-coverage">, 
-Group, Visibility<[ClangOption, CLOption]>,
-HelpText<"Generate instrumented code to collect coverage info for cold 
functions into default.profraw file (overridden by '=' form of option or 
LLVM_PROFILE_FILE env var)">;
-def fprofile_generate_cold_function_coverage_EQ : Joined<["-"], 
"fprofile-generate-cold-function-coverage=">, 
-Group, Visibility<[ClangOption, CLOption]>, 
MetaVarName<"">,
-HelpText<"Generate instrumented code to collect coverage info for cold 
functions into /default.profraw (overridden by LLVM_PROFILE_FILE env 
var)">; 
 def fprofile_instr_generate : Flag<["-"], "fprofile-instr-generate">,
 Group, Visibility<[ClangOption, CLOption]>,
 HelpText<"Generate instrumented code to collect execution counts into 
default.profraw file (overridden by '=' form of option or LLVM_PROFILE_FILE env 
var)">;

diff  --git a/clang/lib/Driver/ToolChain.cpp b/clang/lib/Driver/ToolChain.cpp
index bdf3da0c96adca..6d3ede40691093 100644
--- a/clang/lib/Driver/ToolChain.cpp
+++ b/clang/lib/Driver/ToolChain.cpp
@@ -899,9 +899,7 @@ bool ToolChain::needsProfileRT(const ArgList &Args) {
  Args.hasArg(options::OPT_fprofile_instr_generate) ||
  Args.hasArg(options::OPT_fprofile_instr_generate_EQ) ||
  Args.hasArg(options::OPT_fcreate_profile) ||
- Args.hasArg(options::OPT_forder_file_instrumentation) ||
- Args.hasArg(options::OPT_fprofile_generate_cold_function_coverage) ||
- Args.hasArg(options::OPT_fprofile_generate_cold_function_coverage_EQ);
+ Args.hasArg(options::OPT_forder_file_instrumentation);
 }
 
 bool ToolChain::needsGCovInstrumentation(const llvm::opt::ArgList &Args) {

diff  --git a/clang/lib/Driver/ToolChains/Clang.cpp 
b/clang/lib/Driver/ToolChains/Clang.cpp
index 4c6f508f1f24a6..04b3832327a99c 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -632,26 +632,6 @@ static void addPGOAndCoverageFlags(const ToolChain &TC, 
Compilation &C,
 }
   }
 
-  if (auto *ColdFuncCoverageArg = Args.getLastArg(
-  options::OPT_fprofile_generate_cold_function_coverage,
-  options::OPT_fprofile_generate_cold_function_coverage_EQ)) {
-SmallString<128> Path(
-ColdFuncCoverageArg->getOption().matches(
-options::OPT_fprofile_generate_cold_function_coverage_EQ)
-? ColdFuncCoverageArg->getValue()
-: "");
-llvm::sys::path::append(Path, "default_%m.profraw");
-// FIXME: Idealy the file path should be passed through
-// `-fprofile-instrument-path=`(InstrProfileOutput), however, this field is
-// shared with other profile use path(see PGOOptions), we need to refactor
-// PGOOptions to make it work.
-CmdArgs.push_back("-mllvm");
-CmdArgs.push_back(Args.MakeArgString(
-Twine("--instrument-cold-function-only-path=") + Path));
-CmdArgs.push_back("-mllvm");
-CmdArgs.push_back("--pgo-function-entry-coverage");
-  }
-
   Arg *PGOGenArg = nullptr;
   if (PGOGenerateArg) {
 assert(!CSPGOGenerateArg);

diff  --git a/clang/test/CodeGen/pgo-cold-function-coverage.c 
b/clang/test/CodeGen/pgo-cold-function-coverage.c
deleted file mode 100644
index fd1e1e7e14cda5..00
--- a/clang/test/CodeGen/pgo-cold-function-coverage.c
+++ /dev/null
@@ -1,19 +0,0 @@
-// Test -fprofile-generate-cold-function-coverage 
-
-// RUN: rm -rf %t && split-file %s %t
-// RUN: %clang -O2 -fprofile-generate-cold-function-coverage=/xxx/yyy/ 
-fprofile-sample-accurate -fprofile-sample-use=%t/pgo-cold-func.prof  -S 
-emit-llv

[clang] 06e28ed - Revert "specify clang --target to fix breakage on AIX (#114127)"

2024-10-31 Thread Dmitry Chernenkov via cfe-commits 

Author: Dmitry Chernenkov
Date: 2024-10-31T10:55:17Z
New Revision: 06e28ed84f3f0a05b493699965e18e7a5aeaccd2

URL: 
https://github.com/llvm/llvm-project/commit/06e28ed84f3f0a05b493699965e18e7a5aeaccd2
DIFF: 
https://github.com/llvm/llvm-project/commit/06e28ed84f3f0a05b493699965e18e7a5aeaccd2.diff

LOG: Revert "specify clang --target to fix breakage on AIX (#114127)"

This reverts commit cc60c46e39b0fffadc83a905b37d98aff426ac17.

Added: 


Modified: 
clang/test/CodeGen/pgo-cold-function-coverage.c

Removed: 




diff  --git a/clang/test/CodeGen/pgo-cold-function-coverage.c 
b/clang/test/CodeGen/pgo-cold-function-coverage.c
index 3003cdc3e15e02..fd1e1e7e14cda5 100644
--- a/clang/test/CodeGen/pgo-cold-function-coverage.c
+++ b/clang/test/CodeGen/pgo-cold-function-coverage.c
@@ -1,7 +1,7 @@
 // Test -fprofile-generate-cold-function-coverage 
 
 // RUN: rm -rf %t && split-file %s %t
-// RUN: %clang --target=x86_64 -O2 
-fprofile-generate-cold-function-coverage=/xxx/yyy/ -fprofile-sample-accurate 
-fprofile-sample-use=%t/pgo-cold-func.prof  -S -emit-llvm -o - 
%t/pgo-cold-func.c | FileCheck %s
+// RUN: %clang -O2 -fprofile-generate-cold-function-coverage=/xxx/yyy/ 
-fprofile-sample-accurate -fprofile-sample-use=%t/pgo-cold-func.prof  -S 
-emit-llvm -o - %t/pgo-cold-func.c | FileCheck %s
 
 // CHECK: @__llvm_profile_filename = {{.*}} c"/xxx/yyy/default_%m.profraw\00"
 



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