Merge branch 'llvm:main' into main

Author: T-Tie

.github/CODEOWNERS

@@ -68,7 +68,7 @@
 /mlir/lib/Dialect/Linalg/Transforms/ElementwiseOpFusion.cpp @MaheshRavishankar @nicolasvasilache
 /mlir/lib/Dialect/Linalg/Transforms/DataLayoutPropagation.cpp @hanhanW @nicolasvasilache
 /mlir/lib/Dialect/Linalg/Transforms/Transforms.cpp @dcaballe @hanhanW @nicolasvasilache
-/mlir/lib/Dialect/Linalg/Transforms/Vectorization.cpp @banach-space @dcaballe @hanhanW @nicolasvasilache
+/mlir/lib/Dialect/Linalg/Transforms/Vectorization.cpp @banach-space @dcaballe @hanhanW @nicolasvasilache @Groverkss
 
 # MemRef Dialect in MLIR.
 /mlir/lib/Dialect/MemRef/Transforms/EmulateNarrowType.cpp @MaheshRavishankar @nicolasvasilache
@@ -82,9 +82,9 @@
 /mlir/**/*VectorToSCF* @banach-space @dcaballe @matthias-springer @nicolasvasilache
 /mlir/**/*VectorToLLVM* @banach-space @dcaballe @nicolasvasilache
 /mlir/**/*X86Vector* @aartbik @dcaballe @nicolasvasilache
-/mlir/include/mlir/Dialect/Vector @banach-space @dcaballe @nicolasvasilache
+/mlir/include/mlir/Dialect/Vector @banach-space @dcaballe @nicolasvasilache @Groverkss
 /mlir/include/mlir/Dialect/Vector/IR @kuhar
-/mlir/lib/Dialect/Vector @banach-space @dcaballe @nicolasvasilache
+/mlir/lib/Dialect/Vector @banach-space @dcaballe @nicolasvasilache @Groverkss
 /mlir/lib/Dialect/Vector/Transforms/* @banach-space @dcaballe @hanhanW @nicolasvasilache
 /mlir/lib/Dialect/Vector/Transforms/VectorEmulateNarrowType.cpp @banach-space @dcaballe @MaheshRavishankar @nicolasvasilache
 /mlir/**/*EmulateNarrowType* @dcaballe @hanhanW

bolt/include/bolt/Core/BinaryBasicBlock.h

@@ -819,6 +819,9 @@ class BinaryBasicBlock {
     return OutputAddressRange;
   }
 
+  uint64_t getOutputStartAddress() const { return OutputAddressRange.first; }
+  uint64_t getOutputEndAddress() const { return OutputAddressRange.second; }
+
   bool hasLocSyms() const { return LocSyms != nullptr; }
 
   /// Return mapping of input offsets to symbols in the output.

bolt/include/bolt/Core/FunctionLayout.h

@@ -123,7 +123,8 @@ class FunctionFragment {
   const_iterator begin() const;
   iterator end();
   const_iterator end() const;
-  const BinaryBasicBlock *front() const;
+  BinaryBasicBlock *front() const;
+  BinaryBasicBlock *back() const;
 
   friend class FunctionLayout;
 };

bolt/include/bolt/Passes/LongJmp.h

@@ -63,6 +63,19 @@ class LongJmpPass : public BinaryFunctionPass {
   uint32_t NumColdStubs{0};
   uint32_t NumSharedStubs{0};
 
+  /// The shortest distance for any branch instruction on AArch64.
+  static constexpr size_t ShortestJumpBits = 16;
+  static constexpr size_t ShortestJumpSpan = 1ULL << (ShortestJumpBits - 1);
+
+  /// The longest single-instruction branch.
+  static constexpr size_t LongestJumpBits = 28;
+  static constexpr size_t LongestJumpSpan = 1ULL << (LongestJumpBits - 1);
+
+  /// Relax all internal function branches including those between fragments.
+  /// Assume that fragments are placed in different sections but are within
+  /// 128MB of each other.
+  void relaxLocalBranches(BinaryFunction &BF);
+
   ///                 -- Layout estimation methods --
   /// Try to do layout before running the emitter, by looking at BinaryFunctions
   /// and MCInsts -- this is an estimation. To be correct for longjmp inserter

bolt/lib/Core/FunctionLayout.cpp

@@ -33,7 +33,9 @@ FunctionFragment::const_iterator FunctionFragment::end() const {
   return const_iterator(Layout->block_begin() + StartIndex + Size);
 }
 
-const BinaryBasicBlock *FunctionFragment::front() const { return *begin(); }
+BinaryBasicBlock *FunctionFragment::front() const { return *begin(); }
+
+BinaryBasicBlock *FunctionFragment::back() const { return *std::prev(end()); }
 
 FunctionLayout::FunctionLayout() { addFragment(); }