Merge branch 'llvm:main' into main

Author: 2LoS

clang/include/clang/Basic/Attr.td

@@ -4335,16 +4335,6 @@ def HLSLLoopHint: StmtAttr {
   let Documentation = [HLSLLoopHintDocs, HLSLUnrollHintDocs];
 }
 
-def HLSLControlFlowHint: StmtAttr {
-  /// [branch]
-  /// [flatten]
-  let Spellings = [Microsoft<"branch">, Microsoft<"flatten">];
-  let Subjects = SubjectList<[IfStmt],
-                              ErrorDiag, "'if' statements">;
-  let LangOpts = [HLSL];
-  let Documentation = [InternalOnly];
-}
-
 def CapturedRecord : InheritableAttr {
   // This attribute has no spellings as it is only ever created implicitly.
   let Spellings = [];

clang/lib/CodeGen/CGStmt.cpp

@@ -757,8 +757,6 @@ void CodeGenFunction::EmitAttributedStmt(const AttributedStmt &S) {
   bool noinline = false;
   bool alwaysinline = false;
   bool noconvergent = false;
-  HLSLControlFlowHintAttr::Spelling flattenOrBranch =
-      HLSLControlFlowHintAttr::SpellingNotCalculated;
   const CallExpr *musttail = nullptr;
 
   for (const auto *A : S.getAttrs()) {
@@ -790,17 +788,13 @@ void CodeGenFunction::EmitAttributedStmt(const AttributedStmt &S) {
         Builder.CreateAssumption(AssumptionVal);
       }
     } break;
-    case attr::HLSLControlFlowHint: {
-      flattenOrBranch = cast<HLSLControlFlowHintAttr>(A)->getSemanticSpelling();
-    } break;
     }
   }
   SaveAndRestore save_nomerge(InNoMergeAttributedStmt, nomerge);
   SaveAndRestore save_noinline(InNoInlineAttributedStmt, noinline);
   SaveAndRestore save_alwaysinline(InAlwaysInlineAttributedStmt, alwaysinline);
   SaveAndRestore save_noconvergent(InNoConvergentAttributedStmt, noconvergent);
   SaveAndRestore save_musttail(MustTailCall, musttail);
-  SaveAndRestore save_flattenOrBranch(HLSLControlFlowAttr, flattenOrBranch);
   EmitStmt(S.getSubStmt(), S.getAttrs());
 }
 

clang/lib/CodeGen/CodeGenFunction.cpp

@@ -40,7 +40,6 @@
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/FPEnv.h"
-#include "llvm/IR/Instruction.h"
 #include "llvm/IR/IntrinsicInst.h"
 #include "llvm/IR/Intrinsics.h"
 #include "llvm/IR/MDBuilder.h"
@@ -2084,29 +2083,7 @@ void CodeGenFunction::EmitBranchOnBoolExpr(
     Weights = createProfileWeights(TrueCount, CurrentCount - TrueCount);
   }
 
-  llvm::Instruction *BrInst = Builder.CreateCondBr(CondV, TrueBlock, FalseBlock,
-                                                   Weights, Unpredictable);
-  switch (HLSLControlFlowAttr) {
-  case HLSLControlFlowHintAttr::Microsoft_branch:
-  case HLSLControlFlowHintAttr::Microsoft_flatten: {
-    llvm::MDBuilder MDHelper(CGM.getLLVMContext());
-
-    llvm::ConstantInt *BranchHintConstant =
-        HLSLControlFlowAttr ==
-                HLSLControlFlowHintAttr::Spelling::Microsoft_branch
-            ? llvm::ConstantInt::get(CGM.Int32Ty, 1)
-            : llvm::ConstantInt::get(CGM.Int32Ty, 2);
-
-    SmallVector<llvm::Metadata *, 2> Vals(
-        {MDHelper.createString("hlsl.controlflow.hint"),
-         MDHelper.createConstant(BranchHintConstant)});
-    BrInst->setMetadata("hlsl.controlflow.hint",
-                        llvm::MDNode::get(CGM.getLLVMContext(), Vals));
-    break;
-  }
-  case HLSLControlFlowHintAttr::SpellingNotCalculated:
-    break;
-  }
+  Builder.CreateCondBr(CondV, TrueBlock, FalseBlock, Weights, Unpredictable);
 }
 
 /// ErrorUnsupported - Print out an error that codegen doesn't support the

clang/lib/CodeGen/CodeGenFunction.h

@@ -615,10 +615,6 @@ class CodeGenFunction : public CodeGenTypeCache {
   /// True if the current statement has noconvergent attribute.
   bool InNoConvergentAttributedStmt = false;
 
-  /// HLSL Branch attribute.
-  HLSLControlFlowHintAttr::Spelling HLSLControlFlowAttr =
-      HLSLControlFlowHintAttr::SpellingNotCalculated;
-
   // The CallExpr within the current statement that the musttail attribute
   // applies to.  nullptr if there is no 'musttail' on the current statement.
   const CallExpr *MustTailCall = nullptr;

clang/lib/Sema/SemaStmtAttr.cpp

@@ -619,12 +619,6 @@ static Attr *handleHLSLLoopHintAttr(Sema &S, Stmt *St, const ParsedAttr &A,
   return ::new (S.Context) HLSLLoopHintAttr(S.Context, A, UnrollFactor);
 }
 
-static Attr *handleHLSLControlFlowHint(Sema &S, Stmt *St, const ParsedAttr &A,
-                                       SourceRange Range) {
-
-  return ::new (S.Context) HLSLControlFlowHintAttr(S.Context, A);
-}
-
 static Attr *ProcessStmtAttribute(Sema &S, Stmt *St, const ParsedAttr &A,
                                   SourceRange Range) {
   if (A.isInvalid() || A.getKind() == ParsedAttr::IgnoredAttribute)
@@ -661,8 +655,6 @@ static Attr *ProcessStmtAttribute(Sema &S, Stmt *St, const ParsedAttr &A,
     return handleLoopHintAttr(S, St, A, Range);
   case ParsedAttr::AT_HLSLLoopHint:
     return handleHLSLLoopHintAttr(S, St, A, Range);
-  case ParsedAttr::AT_HLSLControlFlowHint:
-    return handleHLSLControlFlowHint(S, St, A, Range);
   case ParsedAttr::AT_OpenCLUnrollHint:
     return handleOpenCLUnrollHint(S, St, A, Range);
   case ParsedAttr::AT_Suppress:

clang/test/AST/HLSL/HLSLControlFlowHint.hlsl

@@ -1,3 +1,7 @@
+if ( CMAKE_SYSTEM_NAME MATCHES "Windows" OR CMAKE_SYSTEM_NAME MATCHES "NetBSD" )
+  list(APPEND extra_libs lldbHost)
+endif ()
+
 if (HAVE_LIBPTHREAD)
   list(APPEND extra_libs pthread)
 endif ()
@@ -22,23 +26,22 @@ add_lldb_tool(lldb-dap
   lldb-dap.cpp
   Breakpoint.cpp
   BreakpointBase.cpp
-  DAP.cpp
   ExceptionBreakpoint.cpp
   FifoFiles.cpp
   FunctionBreakpoint.cpp
-  InstructionBreakpoint.cpp
   IOStream.cpp
   JSONUtils.cpp
   LLDBUtils.cpp
   OutputRedirector.cpp
   ProgressEvent.cpp
   RunInTerminal.cpp
   SourceBreakpoint.cpp
+  DAP.cpp
   Watchpoint.cpp
+  InstructionBreakpoint.cpp
 
   LINK_LIBS
     liblldb
-    lldbHost
     ${extra_libs}
 
   LINK_COMPONENTS