Kyvangka1610
diff --git a/‎.github/workflows/issue-release-workflow.yml‎
Lines changed: 5 additions & 2 deletions b/‎.github/workflows/issue-release-workflow.yml‎
Lines changed: 5 additions & 2 deletions
diff --git a/‎.github/workflows/issue-subscriber.yml‎
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diff --git a/‎.github/workflows/llvm-bugs.yml‎
Lines changed: 1 addition & 0 deletions b/‎.github/workflows/llvm-bugs.yml‎
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diff --git a/‎.mailmap‎
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diff --git a/‎README.md‎
Lines changed: 17 additions & 8 deletions b/‎README.md‎
Lines changed: 17 additions & 8 deletions
diff --git a/‎bolt/docs/OptimizingClang.md‎
Lines changed: 3 additions & 2 deletions b/‎bolt/docs/OptimizingClang.md‎
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diff --git a/‎bolt/include/bolt/Core/BinaryBasicBlock.h‎
Lines changed: 11 additions & 1 deletion b/‎bolt/include/bolt/Core/BinaryBasicBlock.h‎
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diff --git a/‎bolt/include/bolt/Core/BinaryContext.h‎
Lines changed: 6 additions & 4 deletions b/‎bolt/include/bolt/Core/BinaryContext.h‎
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diff --git a/‎bolt/include/bolt/Core/BinaryFunction.h‎
Lines changed: 3 additions & 2 deletions b/‎bolt/include/bolt/Core/BinaryFunction.h‎
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diff --git a/‎bolt/include/bolt/Core/BinarySection.h‎
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@@ -19,9 +19,12 @@ on:
     types:
       - created
       - edited
+  issues:
+    types:
+      - opened
 
 env:
-  COMMENT_BODY: ${{ github.event.comment.body }}
+  COMMENT_BODY: ${{ github.event.action == 'opened' && github.event.issue.body || github.event.comment.body  }}
 
 jobs:
   backport-commits:
@@ -30,7 +33,7 @@ jobs:
     if: >-
         (github.repository == 'llvm/llvm-project') &&
         !startswith(github.event.comment.body, '<!--IGNORE-->') &&
-        contains(github.event.comment.body, '/cherry-pick')
+        contains(github.event.action == 'opened' && github.event.issue.body || github.event.comment.body, '/cherry-pick')
     steps:
       - name: Fetch LLVM sources
         uses: actions/checkout@v2
 
@@ -18,9 +18,12 @@ jobs:
         pip install -r requirements.txt
 
     - name: Update watchers
+      # https://docs.github.com/en/actions/security-guides/security-hardening-for-github-actions#using-an-intermediate-environment-variable
+      env:
+        LABEL_NAME: ${{ github.event.label.name }}
       run: |
         ./github-automation.py \
-          --token ${{ secrets.ISSUE_SUBSCRIBER_TOKEN }} \
+          --token '${{ secrets.ISSUE_SUBSCRIBER_TOKEN }}' \
           issue-subscriber \
-          --issue-number ${{ github.event.issue.number }} \
-          --label-name ${{ github.event.label.name }}
+          --issue-number '${{ github.event.issue.number }}' \
+          --label-name "$LABEL_NAME"
@@ -48,6 +48,7 @@ jobs:
                 to: "[email protected]",
                 subject: `[Bug ${issue.data.number}] ${issue.data.title}`,
                 template: "new-github-issue",
+                'o:tracking-clicks': 'no',
                 'h:X-Mailgun-Variables': JSON.stringify(payload)
               };
 
 
@@ -16,7 +16,7 @@
 # Combinations of both are possible too, see
 # https://git-scm.com/docs/gitmailmap for format details.
 #
-# You can commit changes for your own names and  email addresses without review.
+# You can commit changes for your own names and email addresses without review.
 # If you want to add entries for other people, please have them review the
 # addition.
 #
 
@@ -63,17 +63,25 @@ This is an example work-flow and configuration to get and build the LLVM source:
 
         Some common options:
 
-        * ``-DLLVM_ENABLE_PROJECTS='...'`` --- semicolon-separated list of the LLVM
-          sub-projects you'd like to additionally build. Can include any of: clang,
-          clang-tools-extra, compiler-rt,cross-project-tests, flang, libc, libclc,
-          libcxx, libcxxabi, libunwind, lld, lldb, mlir, openmp, polly, or pstl.
+        * ``-DLLVM_ENABLE_PROJECTS='...'`` and ``-DLLVM_ENABLE_RUNTIMES='...'`` ---
+          semicolon-separated list of the LLVM sub-projects and runtimes you'd like to
+          additionally build. ``LLVM_ENABLE_PROJECTS`` can include any of: clang,
+          clang-tools-extra, cross-project-tests, flang, libc, libclc, lld, lldb,
+          mlir, openmp, polly, or pstl. ``LLVM_ENABLE_RUNTIMES`` can include any of
+          libcxx, libcxxabi, libunwind, compiler-rt, libc or openmp. Some runtime
+          projects can be specified either in ``LLVM_ENABLE_PROJECTS`` or in
+          ``LLVM_ENABLE_RUNTIMES``.
 
           For example, to build LLVM, Clang, libcxx, and libcxxabi, use
-          ``-DLLVM_ENABLE_PROJECTS="clang;libcxx;libcxxabi"``.
+          ``-DLLVM_ENABLE_PROJECTS="clang" -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi"``.
 
         * ``-DCMAKE_INSTALL_PREFIX=directory`` --- Specify for *directory* the full
           path name of where you want the LLVM tools and libraries to be installed
-          (default ``/usr/local``).
+          (default ``/usr/local``). Be careful if you install runtime libraries: if
+          your system uses those provided by LLVM (like libc++ or libc++abi), you
+          must not overwrite your system's copy of those libraries, since that
+          could render your system unusable. In general, using something like
+          ``/usr`` is not advised, but ``/usr/local`` is fine.
 
         * ``-DCMAKE_BUILD_TYPE=type`` --- Valid options for *type* are Debug,
           Release, RelWithDebInfo, and MinSizeRel. Default is Debug.
@@ -94,8 +102,9 @@ This is an example work-flow and configuration to get and build the LLVM source:
 
         * Running a serial build will be **slow**.  To improve speed, try running a
           parallel build.  That's done by default in Ninja; for ``make``, use the option
-          ``-j NNN``, where ``NNN`` is the number of parallel jobs, e.g. the number of
-          CPUs you have.
+          ``-j NNN``, where ``NNN`` is the number of parallel jobs to run.
+          In most cases, you get the best performance if you specify the number of CPU threads you have.
+          On some Unix systems, you can specify this with ``-j$(nproc)``.
 
       * For more information see [CMake](https://llvm.org/docs/CMake.html)
 
 
@@ -41,7 +41,7 @@ Collecting accurate profile requires running `perf` on a hardware that
 implements taken branch sampling (`-b/-j` flag). For that reason, it may not be possible to
 collect the accurate profile in a virtualized environment, e.g. in the cloud.
 We do support regular sampling profiles, but the performance
-improvements are expected to be more modest. 
+improvements are expected to be more modest.
 
 ```bash
 $ mkdir ${TOPLEV}/stage3
@@ -211,7 +211,8 @@ $ cd ${TOPLEV}/stage1
 $ cmake -G Ninja ${TOPLEV}/llvm-project/llvm -DLLVM_TARGETS_TO_BUILD=X86 \
       -DCMAKE_BUILD_TYPE=Release \
       -DCMAKE_C_COMPILER=gcc -DCMAKE_CXX_COMPILER=g++ -DCMAKE_ASM_COMPILER=gcc \
-      -DLLVM_ENABLE_PROJECTS="clang;lld;compiler-rt" \
+      -DLLVM_ENABLE_PROJECTS="clang;lld" \
+      -DLLVM_ENABLE_RUNTIMES="compiler-rt" \
       -DCOMPILER_RT_BUILD_SANITIZERS=OFF -DCOMPILER_RT_BUILD_XRAY=OFF \
       -DCOMPILER_RT_BUILD_LIBFUZZER=OFF \
       -DCMAKE_INSTALL_PREFIX=${TOPLEV}/stage1/install
 
@@ -31,6 +31,7 @@ class MCCodeEmitter;
 namespace bolt {
 
 class BinaryFunction;
+class JumpTable;
 
 class BinaryBasicBlock {
 public:
@@ -623,6 +624,10 @@ class BinaryBasicBlock {
   /// remove the conditional successor and branch instruction.
   void removeDuplicateConditionalSuccessor(MCInst *CondBranch);
 
+  /// Update successors of the basic block based on the jump table instruction.
+  /// The block must end with a jump table instruction.
+  void updateJumpTableSuccessors();
+
   /// Test if BB is a predecessor of this block.
   bool isPredecessor(const BinaryBasicBlock *BB) const {
     auto Itr = std::find(Predecessors.begin(), Predecessors.end(), BB);
@@ -909,7 +914,12 @@ class BinaryBasicBlock {
     return Index;
   }
 
-  bool hasJumpTable() const;
+  /// Return jump table if the block contains a jump table instruction or
+  /// nullptr otherwise.
+  const JumpTable *getJumpTable() const;
+
+  /// Check if the block has a jump table instruction.
+  bool hasJumpTable() const { return getJumpTable() != nullptr; }
 
 private:
   void adjustNumPseudos(const MCInst &Inst, int Sign);
 
@@ -211,7 +211,7 @@ class BinaryContext {
   std::map<unsigned, DwarfLineTable> DwarfLineTablesCUMap;
 
 public:
-  static std::unique_ptr<BinaryContext>
+  static Expected<std::unique_ptr<BinaryContext>>
   createBinaryContext(const ObjectFile *File, bool IsPIC,
                       std::unique_ptr<DWARFContext> DwCtx);
 
@@ -489,7 +489,9 @@ class BinaryContext {
   void adjustCodePadding();
 
   /// Regular page size.
-  static constexpr unsigned RegularPageSize = 0x1000;
+  unsigned RegularPageSize{0x1000};
+  static constexpr unsigned RegularPageSizeX86 = 0x1000;
+  static constexpr unsigned RegularPageSizeAArch64 = 0x10000;
 
   /// Huge page size to use.
   static constexpr unsigned HugePageSize = 0x200000;
@@ -1192,14 +1194,14 @@ class BinaryContext {
                                           /*PIC=*/!HasFixedLoadAddress));
     MCEInstance.LocalCtx->setObjectFileInfo(MCEInstance.LocalMOFI.get());
     MCEInstance.MCE.reset(
-        TheTarget->createMCCodeEmitter(*MII, *MRI, *MCEInstance.LocalCtx));
+        TheTarget->createMCCodeEmitter(*MII, *MCEInstance.LocalCtx));
     return MCEInstance;
   }
 
   /// Creating MCStreamer instance.
   std::unique_ptr<MCStreamer>
   createStreamer(llvm::raw_pwrite_stream &OS) const {
-    MCCodeEmitter *MCE = TheTarget->createMCCodeEmitter(*MII, *MRI, *Ctx);
+    MCCodeEmitter *MCE = TheTarget->createMCCodeEmitter(*MII, *Ctx);
     MCAsmBackend *MAB =
         TheTarget->createMCAsmBackend(*STI, *MRI, MCTargetOptions());
     std::unique_ptr<MCObjectWriter> OW = MAB->createObjectWriter(OS);
 
@@ -1299,10 +1299,11 @@ class BinaryFunction {
     case ELF::R_X86_64_32:
     case ELF::R_X86_64_32S:
     case ELF::R_X86_64_64:
+    case ELF::R_X86_64_PC8:
+    case ELF::R_X86_64_PC32:
+    case ELF::R_X86_64_PC64:
       Relocations[Offset] = Relocation{Offset, Symbol, RelType, Addend, Value};
       return;
-    case ELF::R_X86_64_PC32:
-    case ELF::R_X86_64_PC8:
     case ELF::R_X86_64_PLT32:
     case ELF::R_X86_64_GOTPCRELX:
     case ELF::R_X86_64_REX_GOTPCRELX:
 
@@ -296,6 +296,16 @@ class BinarySection {
     return make_range(Relocations.begin(), Relocations.end());
   }
 
+  /// Iterate over all dynamic relocations for this section.
+  iterator_range<RelocationSetType::iterator> dynamicRelocations() {
+    return make_range(DynamicRelocations.begin(), DynamicRelocations.end());
+  }
+
+  /// Iterate over all dynamic relocations for this section.
+  iterator_range<RelocationSetType::const_iterator> dynamicRelocations() const {
+    return make_range(DynamicRelocations.begin(), DynamicRelocations.end());
+  }
+
   /// Does this section have any non-pending relocations?
   bool hasRelocations() const { return !Relocations.empty(); }
Original file line number	Diff line number	Diff line change
`@@ -16,7 +16,7 @@`
`16`	`16`	`# Combinations of both are possible too, see`
`17`	`17`	`# https://git-scm.com/docs/gitmailmap for format details.`
`18`	`18`	`#`
`19`		`-# You can commit changes for your own names and email addresses without review.`
	`19`	`+# You can commit changes for your own names and email addresses without review.`
`20`	`20`	`# If you want to add entries for other people, please have them review the`
`21`	`21`	`# addition.`
`22`	`22`	`#`