rebase

Created using spr 1.3.4

Author: vitalybuka

bolt/lib/Core/BinaryEmitter.cpp

@@ -923,9 +923,21 @@ void BinaryEmitter::emitLSDA(BinaryFunction &BF, const FunctionFragment &FF) {
   // As a solution, for fixed-address binaries we set LPStart to 0, and for
   // position-independent binaries we offset LP start by one byte.
   bool NeedsLPAdjustment = false;
-  const MCSymbol *LPStartSymbol = nullptr;
   std::function<void(const MCSymbol *)> emitLandingPad;
-  if (BC.HasFixedLoadAddress) {
+
+  // Check if there's a symbol associated with a landing pad fragment.
+  const MCSymbol *LPStartSymbol = BF.getLPStartSymbol(FF.getFragmentNum());
+  if (!LPStartSymbol) {
+    // Since landing pads are not in the same fragment, we fall back to emitting
+    // absolute addresses for this FDE.
+    if (opts::Verbosity >= 2) {
+      BC.outs() << "BOLT-INFO: falling back to generating absolute-address "
+                << "exception ranges for " << BF << '\n';
+    }
+
+    assert(BC.HasFixedLoadAddress &&
+           "Cannot emit absolute-address landing pads for PIE/DSO");
+
     Streamer.emitIntValue(dwarf::DW_EH_PE_udata4, 1); // LPStart format
     Streamer.emitIntValue(0, 4);                      // LPStart
     emitLandingPad = [&](const MCSymbol *LPSymbol) {
@@ -936,9 +948,6 @@ void BinaryEmitter::emitLSDA(BinaryFunction &BF, const FunctionFragment &FF) {
     };
   } else {
     std::optional<FragmentNum> LPFN = BF.getLPFragment(FF.getFragmentNum());
-    LPStartSymbol = BF.getLPStartSymbol(FF.getFragmentNum());
-    assert(LPFN && LPStartSymbol && "Expected LPStart symbol to be set");
-
     const FunctionFragment &LPFragment = BF.getLayout().getFragment(*LPFN);
     NeedsLPAdjustment =
         (!LPFragment.empty() && LPFragment.front()->isLandingPad());
@@ -987,7 +996,7 @@ void BinaryEmitter::emitLSDA(BinaryFunction &BF, const FunctionFragment &FF) {
 
   // Emit encoding of entries in the call site table. The format is used for the
   // call site start, length, and corresponding landing pad.
-  if (BC.HasFixedLoadAddress)
+  if (!LPStartSymbol)
     Streamer.emitIntValue(dwarf::DW_EH_PE_sdata4, 1);
   else
     Streamer.emitIntValue(dwarf::DW_EH_PE_uleb128, 1);
@@ -1007,7 +1016,7 @@ void BinaryEmitter::emitLSDA(BinaryFunction &BF, const FunctionFragment &FF) {
 
     // Start of the range is emitted relative to the start of current
     // function split part.
-    if (BC.HasFixedLoadAddress) {
+    if (!LPStartSymbol) {
       Streamer.emitAbsoluteSymbolDiff(BeginLabel, StartSymbol, 4);
       Streamer.emitAbsoluteSymbolDiff(EndLabel, BeginLabel, 4);
     } else {

bolt/lib/Passes/SplitFunctions.cpp

@@ -901,7 +901,7 @@ void SplitFunctions::splitFunction(BinaryFunction &BF, SplitStrategy &S) {
   // have to be placed in the same fragment. When we split them, create
   // trampoline landing pads that will redirect the execution to real LPs.
   TrampolineSetType Trampolines;
-  if (!BC.HasFixedLoadAddress && BF.hasEHRanges() && BF.isSplit()) {
+  if (BF.hasEHRanges() && BF.isSplit()) {
     // If all landing pads for this fragment are grouped in one (potentially
     // different) fragment, we can set LPStart to the start of that fragment
     // and avoid trampoline code.
@@ -925,8 +925,12 @@ void SplitFunctions::splitFunction(BinaryFunction &BF, SplitStrategy &S) {
       } else if (LandingPadFragments.size() == 1) {
         BF.setLPFragment(FF.getFragmentNum(), LandingPadFragments.front());
       } else {
-        NeedsTrampolines = true;
-        break;
+        if (!BC.HasFixedLoadAddress) {
+          NeedsTrampolines = true;
+          break;
+        } else {
+          BF.setLPFragment(FF.getFragmentNum(), std::nullopt);
+        }
       }
     }
 

bolt/test/X86/exceptions-compact.s

@@ -0,0 +1,75 @@
+## Check that llvm-bolt is able to overwrite LSDA in ULEB128 format in-place for
+## all types of binaries.
+
+# REQUIRES: system-linux
+
+# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-linux %s -o %t.o
+# RUN: ld.lld --no-pie %t.o -o %t.exe -q
+# RUN: ld.lld --pie %t.o -o %t.pie -q
+# RUN: ld.lld --shared %t.o -o %t.so -q
+# RUN: llvm-bolt %t.exe -o %t.bolt --strict \
+# RUN:   | FileCheck --check-prefix=CHECK-BOLT %s
+# RUN: llvm-bolt %t.pie -o %t.pie.bolt --strict \
+# RUN:   | FileCheck --check-prefix=CHECK-BOLT %s
+# RUN: llvm-bolt %t.so -o %t.so.bolt --strict \
+# RUN:   | FileCheck --check-prefix=CHECK-BOLT %s
+
+# CHECK-BOLT: rewriting .gcc_except_table in-place
+
+# RUN: llvm-readelf -WS %t.bolt | FileCheck --check-prefix=CHECK-ELF %s
+# RUN: llvm-readelf -WS %t.pie.bolt | FileCheck --check-prefix=CHECK-ELF %s
+# RUN: llvm-readelf -WS %t.so.bolt | FileCheck --check-prefix=CHECK-ELF %s
+
+# CHECK-ELF-NOT: .bolt.org.gcc_except_table
+
+  .text
+  .global foo
+  .type foo, %function
+foo:
+  .cfi_startproc
+  ret
+  .cfi_endproc
+  .size foo, .-foo
+
+  .globl _start
+  .type _start, %function
+_start:
+.Lfunc_begin0:
+  .cfi_startproc
+  .cfi_lsda 27, .Lexception0
+  call foo
+.Ltmp0:
+  call foo
+.Ltmp1:
+  ret
+
+## Landing pads.
+.LLP1:
+  ret
+.LLP0:
+  ret
+
+  .cfi_endproc
+.Lfunc_end0:
+  .size _start, .-_start
+
+## EH table.
+  .section  .gcc_except_table,"a",@progbits
+  .p2align  2
+GCC_except_table0:
+.Lexception0:
+  .byte 255                             # @LPStart Encoding = omit
+  .byte 255                             # @TType Encoding = omit
+  .byte 1                               # Call site Encoding = uleb128
+  .uleb128 .Lcst_end0-.Lcst_begin0
+.Lcst_begin0:
+  .uleb128 .Lfunc_begin0-.Lfunc_begin0  # >> Call Site 1 <<
+  .uleb128 .Ltmp0-.Lfunc_begin0         #   Call between .Lfunc_begin0 and .Ltmp0
+  .uleb128 .LLP0-.Lfunc_begin0          #   jumps to .LLP0
+  .byte 0                               #   On action: cleanup
+  .uleb128 .Ltmp0-.Lfunc_begin0         # >> Call Site 2 <<
+  .uleb128 .Ltmp1-.Ltmp0                #   Call between .Ltmp0 and .Ltmp1
+  .uleb128 .LLP1-.Lfunc_begin0          #     jumps to .LLP1
+  .byte 0                               #   On action: cleanup
+.Lcst_end0:
+

clang-tools-extra/clangd/InlayHints.cpp

@@ -626,10 +626,15 @@ class InlayHintVisitor : public RecursiveASTVisitor<InlayHintVisitor> {
 
   bool VisitLambdaExpr(LambdaExpr *E) {
     FunctionDecl *D = E->getCallOperator();
-    if (!E->hasExplicitResultType())
-      addReturnTypeHint(D, E->hasExplicitParameters()
-                               ? D->getFunctionTypeLoc().getRParenLoc()
-                               : E->getIntroducerRange().getEnd());
+    if (!E->hasExplicitResultType()) {
+      SourceLocation TypeHintLoc;
+      if (!E->hasExplicitParameters())
+        TypeHintLoc = E->getIntroducerRange().getEnd();
+      else if (auto FTL = D->getFunctionTypeLoc())
+        TypeHintLoc = FTL.getRParenLoc();
+      if (TypeHintLoc.isValid())
+        addReturnTypeHint(D, TypeHintLoc);
+    }
     return true;
   }
 

clang-tools-extra/clangd/unittests/InlayHintTests.cpp

@@ -1576,6 +1576,22 @@ TEST(TypeHints, Aliased) {
   EXPECT_THAT(hintsOfKind(AST, InlayHintKind::Type), IsEmpty());
 }
 
+TEST(TypeHints, CallingConvention) {
+  // Check that we don't crash for lambdas without a FunctionTypeLoc
+  // https://github.com/clangd/clangd/issues/2223
+  std::string Code = R"cpp(
+    void test() {
+      []() __cdecl {};
+    }
+  )cpp";
+  TestTU TU = TestTU::withCode(Code);
+  TU.ExtraArgs.push_back("--target=x86_64-w64-mingw32");
+  TU.PredefineMacros = true; // for the __cdecl
+  auto AST = TU.build();
+
+  EXPECT_THAT(hintsOfKind(AST, InlayHintKind::Type), IsEmpty());
+}
+
 TEST(TypeHints, Decltype) {
   assertTypeHints(R"cpp(
     $a[[decltype(0)]] a;

clang/docs/ReleaseNotes.rst

@@ -578,6 +578,11 @@ Improvements to Clang's diagnostics
 
 - Clang now omits shadowing warnings for parameter names in explicit object member functions (#GH95707).
 
+- Improved error recovery for function call arguments with trailing commas (#GH100921).
+
+- For an rvalue reference bound to a temporary struct with an integer member, Clang will detect constant integer overflow
+  in the initializer for the integer member (#GH46755).
+
 Improvements to Clang's time-trace
 ----------------------------------
 
@@ -847,6 +852,7 @@ RISC-V Support
 ^^^^^^^^^^^^^^
 
 - The option ``-mcmodel=large`` for the large code model is supported.
+- Bump RVV intrinsic to version 1.0, the spec: https://github.com/riscv-non-isa/rvv-intrinsic-doc/releases/tag/v1.0.0-rc4
 
 CUDA/HIP Language Changes
 ^^^^^^^^^^^^^^^^^^^^^^^^^

clang/include/clang/Basic/Builtins.td

@@ -4750,6 +4750,12 @@ def HLSLAny : LangBuiltin<"HLSL_LANG"> {
   let Prototype = "bool(...)";
 }
 
+def HLSLAsDouble : LangBuiltin<"HLSL_LANG"> {
+  let Spellings = ["__builtin_hlsl_asdouble"];
+  let Attributes = [NoThrow, Const];
+  let Prototype = "void(...)";
+}
+
 def HLSLWaveActiveAnyTrue : LangBuiltin<"HLSL_LANG"> {
   let Spellings = ["__builtin_hlsl_wave_active_any_true"];
   let Attributes = [NoThrow, Const];

clang/include/clang/Basic/DiagnosticSemaKinds.td

@@ -1728,9 +1728,9 @@ def err_introducing_special_friend : Error<
 def err_tagless_friend_type_template : Error<
   "friend type templates must use an elaborated type">;
 def err_no_matching_local_friend : Error<
-  "no matching function found in local scope">;
+  "cannot define friend function in a local class definition">;
 def err_no_matching_local_friend_suggest : Error<
-  "no matching function %0 found in local scope; did you mean %3?">;
+  "cannot define friend function %0 in a local class definition; did you mean %3?">;
 def err_partial_specialization_friend : Error<
   "partial specialization cannot be declared as a friend">;
 def err_qualified_friend_def : Error<

clang/include/clang/Driver/Options.td

@@ -4405,7 +4405,7 @@ def fcoverage_prefix_map_EQ
     HelpText<"remap file source paths <old> to <new> in coverage mapping. If there are multiple options, prefix replacement is applied in reverse order starting from the last one">;
 def ffile_prefix_map_EQ
   : Joined<["-"], "ffile-prefix-map=">, Group<f_Group>,
-    HelpText<"remap file source paths in debug info, predefined preprocessor "
+    HelpText<"remap file source paths in debug info, coverage mapping, predefined preprocessor "
              "macros and __builtin_FILE(). Implies -ffile-reproducible.">;
 def fmacro_prefix_map_EQ
   : Joined<["-"], "fmacro-prefix-map=">, Group<f_Group>,
@@ -5413,6 +5413,10 @@ def mlam_bh : Flag<["-"], "mlam-bh">, Group<m_loongarch_Features_Group>,
   HelpText<"Enable amswap[_db].{b/h} and amadd[_db].{b/h}">;
 def mno_lam_bh : Flag<["-"], "mno-lam-bh">, Group<m_loongarch_Features_Group>,
   HelpText<"Disable amswap[_db].{b/h} and amadd[_db].{b/h}">;
+def mld_seq_sa : Flag<["-"], "mld-seq-sa">, Group<m_loongarch_Features_Group>,
+  HelpText<"Do not generate load-load barrier instructions (dbar 0x700)">;
+def mno_ld_seq_sa : Flag<["-"], "mno-ld-seq-sa">, Group<m_loongarch_Features_Group>,
+  HelpText<"Generate load-load barrier instructions (dbar 0x700)">;
 def mannotate_tablejump : Flag<["-"], "mannotate-tablejump">, Group<m_loongarch_Features_Group>,
   HelpText<"Enable annotate table jump instruction to correlate it with the jump table.">;
 def mno_annotate_tablejump : Flag<["-"], "mno-annotate-tablejump">, Group<m_loongarch_Features_Group>,
@@ -5884,12 +5888,24 @@ def target : Joined<["--"], "target=">, Flags<[NoXarchOption]>,
 def darwin_target_variant : Separate<["-"], "darwin-target-variant">,
   Flags<[NoXarchOption]>, Visibility<[ClangOption, CLOption]>,
   HelpText<"Generate code for an additional runtime variant of the deployment target">;
+
+//===----------------------------------------------------------------------===//
+// Print CPU info options (clang, clang-cl, flang)
+//===----------------------------------------------------------------------===//
+
+let Visibility = [ClangOption, CC1Option, CLOption, FlangOption, FC1Option] in {
+
 def print_supported_cpus : Flag<["-", "--"], "print-supported-cpus">,
   Group<CompileOnly_Group>,
-  Visibility<[ClangOption, CC1Option, CLOption]>,
-  HelpText<"Print supported cpu models for the given target (if target is not specified,"
-           " it will print the supported cpus for the default target)">,
+  HelpText<"Print supported cpu models for the given target (if target is not "
+           "specified,it will print the supported cpus for the default target)">,
   MarshallingInfoFlag<FrontendOpts<"PrintSupportedCPUs">>;
+
+def : Flag<["-"], "mcpu=help">, Alias<print_supported_cpus>;
+def : Flag<["-"], "mtune=help">, Alias<print_supported_cpus>;
+
+} // let Visibility = [ClangOption, CC1Option, CLOption, FlangOption, FC1Option]
+
 def print_supported_extensions : Flag<["-", "--"], "print-supported-extensions">,
   Visibility<[ClangOption, CC1Option, CLOption]>,
   HelpText<"Print supported -march extensions (RISC-V, AArch64 and ARM only)">,
@@ -5899,8 +5915,6 @@ def print_enabled_extensions : Flag<["-", "--"], "print-enabled-extensions">,
   HelpText<"Print the extensions enabled by the given target and -march/-mcpu options."
            " (AArch64 and RISC-V only)">,
   MarshallingInfoFlag<FrontendOpts<"PrintEnabledExtensions">>;
-def : Flag<["-"], "mcpu=help">, Alias<print_supported_cpus>;
-def : Flag<["-"], "mtune=help">, Alias<print_supported_cpus>;
 def time : Flag<["-"], "time">,
   HelpText<"Time individual commands">;
 def traditional_cpp : Flag<["-", "--"], "traditional-cpp">,

clang/include/clang/Parse/Parser.h

@@ -1934,7 +1934,8 @@ class Parser : public CodeCompletionHandler {
                            llvm::function_ref<void()> ExpressionStarts =
                                llvm::function_ref<void()>(),
                            bool FailImmediatelyOnInvalidExpr = false,
-                           bool EarlyTypoCorrection = false);
+                           bool EarlyTypoCorrection = false,
+                           bool *HasTrailingComma = nullptr);
 
   /// ParseSimpleExpressionList - A simple comma-separated list of expressions,
   /// used for misc language extensions.