merge main into amd-staging

Flang team looking into:

land and reverted 3/1/25
a8db1fb [flang] update fir.coordinate_of to carry the fields (llvm#127231
subsequent landed and reverted, relates to prev.
9805854 [flang][NFC] clean-up fir.field_index legacy usages in tests (llvm#129219)

Author: ronlieb

bolt/include/bolt/Core/BinaryFunction.h

@@ -343,9 +343,6 @@ class BinaryFunction {
   /// True if the function uses ORC format for stack unwinding.
   bool HasORC{false};
 
-  /// True if the original entry point was patched.
-  bool IsPatched{false};
-
   /// True if the function contains explicit or implicit indirect branch to its
   /// split fragments, e.g., split jump table, landing pad in split fragment
   bool HasIndirectTargetToSplitFragment{false};
@@ -1376,9 +1373,6 @@ class BinaryFunction {
   /// Return true if the function uses ORC format for stack unwinding.
   bool hasORC() const { return HasORC; }
 
-  /// Return true if the original entry point was patched.
-  bool isPatched() const { return IsPatched; }
-
   const JumpTable *getJumpTable(const MCInst &Inst) const {
     const uint64_t Address = BC.MIB->getJumpTable(Inst);
     return getJumpTableContainingAddress(Address);
@@ -1729,8 +1723,6 @@ class BinaryFunction {
   /// Mark function that should not be emitted.
   void setIgnored();
 
-  void setIsPatched(bool V) { IsPatched = V; }
-
   void setHasIndirectTargetToSplitFragment(bool V) {
     HasIndirectTargetToSplitFragment = V;
   }

bolt/lib/Passes/PatchEntries.cpp

@@ -130,8 +130,6 @@ Error PatchEntries::runOnFunctions(BinaryContext &BC) {
       assert(!ColdSize && "unexpected cold code");
       assert(HotSize <= PatchSize && "max patch size exceeded");
     }
-
-    Function.setIsPatched(true);
   }
   return Error::success();
 }

clang-tools-extra/clang-tidy/misc/UnusedUsingDeclsCheck.cpp

@@ -184,8 +184,16 @@ void UnusedUsingDeclsCheck::check(const MatchFinder::MatchResult &Result) {
     return;
   }
   // Check user-defined literals
-  if (const auto *UDL = Result.Nodes.getNodeAs<UserDefinedLiteral>("used"))
-    removeFromFoundDecls(UDL->getCalleeDecl());
+  if (const auto *UDL = Result.Nodes.getNodeAs<UserDefinedLiteral>("used")) {
+    const Decl *CalleeDecl = UDL->getCalleeDecl();
+    if (const auto *FD = dyn_cast<FunctionDecl>(CalleeDecl)) {
+      if (const FunctionTemplateDecl *FPT = FD->getPrimaryTemplate()) {
+        removeFromFoundDecls(FPT);
+        return;
+      }
+    }
+    removeFromFoundDecls(CalleeDecl);
+  }
 }
 
 void UnusedUsingDeclsCheck::removeFromFoundDecls(const Decl *D) {

clang-tools-extra/docs/ReleaseNotes.rst

@@ -138,6 +138,10 @@ Changes in existing checks
   <clang-tidy/checks/performance/move-const-arg>` check by fixing false negatives
   on ternary operators calling ``std::move``.
 
+- Improved :doc:`misc-unused-using-decls
+  <clang-tidy/checks/misc/unused-using-decls>` check by fixing false positives
+  on ``operator""`` with template parameters.
+
 Removed checks
 ^^^^^^^^^^^^^^
 

clang-tools-extra/test/clang-tidy/checkers/misc/unused-using-decls.cpp

@@ -222,3 +222,19 @@ using gh69714::StructGH69714_1;
 using gh69714::StructGH69714_2;
 struct StructGH69714_1 a;
 struct StructGH69714_2 *b;
+
+namespace gh53444 {
+namespace my_literals {
+  template <char... Ts>
+  int operator""_r() {
+    return {};
+  }
+}
+
+using my_literals::operator"" _r;
+
+int foo() {
+  auto x2 = 123_r;
+}
+
+}

clang/cmake/caches/BOLT.cmake

@@ -1,6 +1,7 @@
 set(CMAKE_BUILD_TYPE Release CACHE STRING "")
 set(CLANG_BOLT "INSTRUMENT" CACHE STRING "")
 set(CMAKE_EXE_LINKER_FLAGS "-Wl,--emit-relocs,-znow" CACHE STRING "")
+set(CMAKE_SHARED_LINKER_FLAGS "-Wl,--emit-relocs,-znow" CACHE STRING "")
 
 set(LLVM_ENABLE_PROJECTS "bolt;clang" CACHE STRING "")
 set(LLVM_TARGETS_TO_BUILD Native CACHE STRING "")

clang/docs/analyzer/checkers.rst

@@ -118,19 +118,6 @@ core.NullDereference (C, C++, ObjC)
 """""""""""""""""""""""""""""""""""
 Check for dereferences of null pointers.
 
-This checker specifically does
-not report null pointer dereferences for x86 and x86-64 targets when the
-address space is 256 (x86 GS Segment), 257 (x86 FS Segment), or 258 (x86 SS
-segment). See `X86/X86-64 Language Extensions
-<https://clang.llvm.org/docs/LanguageExtensions.html#memory-references-to-specified-segments>`__
-for reference.
-
-The ``SuppressAddressSpaces`` option suppresses
-warnings for null dereferences of all pointers with address spaces. You can
-disable this behavior with the option
-``-analyzer-config core.NullDereference:SuppressAddressSpaces=false``.
-*Defaults to true*.
-
 .. code-block:: objc
 
  // C
@@ -170,6 +157,19 @@ disable this behavior with the option
    obj->x = 1; // warn
  }
 
+Null pointer dereferences of pointers with address spaces are not always defined
+as error. Specifically on x86/x86-64 target if the pointer address space is
+256 (x86 GS Segment), 257 (x86 FS Segment), or 258 (x86 SS Segment), a null
+dereference is not defined as error. See `X86/X86-64 Language Extensions
+<https://clang.llvm.org/docs/LanguageExtensions.html#memory-references-to-specified-segments>`__
+for reference.
+	
+If the analyzer option ``suppress-dereferences-from-any-address-space`` is set
+to true (the default value), then this checker never reports dereference of
+pointers with a specified address space. If the option is set to false, then
+reports from the specific x86 address spaces 256, 257 and 258 are still
+suppressed, but null dereferences from other address spaces are reported.
+
 .. _core-StackAddressEscape:
 
 core.StackAddressEscape (C)
@@ -2919,6 +2919,41 @@ Check for assignment of a fixed address to a pointer.
    p = (int *) 0x10000; // warn
  }
 
+.. _alpha-core-FixedAddressDereference:
+
+alpha.core.FixedAddressDereference (C, C++, ObjC)
+"""""""""""""""""""""""""""""""""""""""""""""""""
+Check for dereferences of fixed addresses.
+
+A pointer contains a fixed address if it was set to a hard-coded value or it
+becomes otherwise obvious that at that point it can have only a single specific
+value.
+
+.. code-block:: c
+
+ void test1() {
+   int *p = (int *)0x020;
+   int x = p[0]; // warn
+ }
+
+ void test2(int *p) {
+   if (p == (int *)-1)
+     *p = 0; // warn
+ }
+
+ void test3() {
+   int (*p_function)(char, char);
+   p_function = (int (*)(char, char))0x04080;
+   int x = (*p_function)('x', 'y'); // NO warning yet at functon pointer calls
+ }
+
+If the analyzer option ``suppress-dereferences-from-any-address-space`` is set
+to true (the default value), then this checker never reports dereference of
+pointers with a specified address space. If the option is set to false, then
+reports from the specific x86 address spaces 256, 257 and 258 are still
+suppressed, but fixed address dereferences from other address spaces are
+reported.
+
 .. _alpha-core-PointerArithm:
 
 alpha.core.PointerArithm (C)

clang/include/clang-c/Index.h

@@ -3061,6 +3061,18 @@ enum CXCallingConv {
   CXCallingConv_M68kRTD = 19,
   CXCallingConv_PreserveNone = 20,
   CXCallingConv_RISCVVectorCall = 21,
+  CXCallingConv_RISCVVLSCall_32 = 22,
+  CXCallingConv_RISCVVLSCall_64 = 23,
+  CXCallingConv_RISCVVLSCall_128 = 24,
+  CXCallingConv_RISCVVLSCall_256 = 25,
+  CXCallingConv_RISCVVLSCall_512 = 26,
+  CXCallingConv_RISCVVLSCall_1024 = 27,
+  CXCallingConv_RISCVVLSCall_2048 = 28,
+  CXCallingConv_RISCVVLSCall_4096 = 29,
+  CXCallingConv_RISCVVLSCall_8192 = 30,
+  CXCallingConv_RISCVVLSCall_16384 = 31,
+  CXCallingConv_RISCVVLSCall_32768 = 32,
+  CXCallingConv_RISCVVLSCall_65536 = 33,
 
   CXCallingConv_Invalid = 100,
   CXCallingConv_Unexposed = 200

clang/include/clang/AST/Type.h

@@ -1946,7 +1946,7 @@ class alignas(TypeAlignment) Type : public ExtQualsTypeCommonBase {
     /// Extra information which affects how the function is called, like
     /// regparm and the calling convention.
     LLVM_PREFERRED_TYPE(CallingConv)
-    unsigned ExtInfo : 13;
+    unsigned ExtInfo : 14;
 
     /// The ref-qualifier associated with a \c FunctionProtoType.
     ///
@@ -4438,19 +4438,16 @@ class FunctionType : public Type {
     // Type::FunctionTypeBitfields::ExtInfo as well.
 
     // |  CC  |noreturn|produces|nocallersavedregs|regparm|nocfcheck|cmsenscall|
-    // |0 .. 4|   5    |    6   |       7         |8 .. 10|    11   |    12    |
+    // |0 .. 5|   6    |    7   |       8         |9 .. 11|    12   |    13    |
     //
     // regparm is either 0 (no regparm attribute) or the regparm value+1.
-    enum { CallConvMask = 0x1F };
-    enum { NoReturnMask = 0x20 };
-    enum { ProducesResultMask = 0x40 };
-    enum { NoCallerSavedRegsMask = 0x80 };
-    enum {
-      RegParmMask =  0x700,
-      RegParmOffset = 8
-    };
-    enum { NoCfCheckMask = 0x800 };
-    enum { CmseNSCallMask = 0x1000 };
+    enum { CallConvMask = 0x3F };
+    enum { NoReturnMask = 0x40 };
+    enum { ProducesResultMask = 0x80 };
+    enum { NoCallerSavedRegsMask = 0x100 };
+    enum { RegParmMask = 0xe00, RegParmOffset = 9 };
+    enum { NoCfCheckMask = 0x1000 };
+    enum { CmseNSCallMask = 0x2000 };
     uint16_t Bits = CC_C;
 
     ExtInfo(unsigned Bits) : Bits(static_cast<uint16_t>(Bits)) {}

clang/include/clang/Basic/Attr.td

@@ -3316,6 +3316,14 @@ def RISCVVectorCC: DeclOrTypeAttr, TargetSpecificAttr<TargetRISCV> {
  let Documentation = [RISCVVectorCCDocs];
 }
 
+def RISCVVLSCC: DeclOrTypeAttr, TargetSpecificAttr<TargetRISCV> {
+ let Spellings = [CXX11<"riscv", "vls_cc">,
+                  C23<"riscv", "vls_cc">,
+                  Clang<"riscv_vls_cc">];
+ let Args = [UnsignedArgument<"VectorWidth", /*opt*/1>];
+ let Documentation = [RISCVVLSCCDocs];
+}
+
 def Target : InheritableAttr {
   let Spellings = [GCC<"target">];
   let Args = [StringArgument<"featuresStr">];