[llvm] 911841f - Revert "[TableGen][DirectX] generate DXIL operation table with TableGen."

Mitch Phillips via llvm-commits llvm-commits at lists.llvm.org
Thu Jun 16 14:08:19 PDT 2022


Author: Mitch Phillips
Date: 2022-06-16T14:07:54-07:00
New Revision: 911841f717eb8acaccf4f3deb5f85fbf6903f55f

URL: https://github.com/llvm/llvm-project/commit/911841f717eb8acaccf4f3deb5f85fbf6903f55f
DIFF: https://github.com/llvm/llvm-project/commit/911841f717eb8acaccf4f3deb5f85fbf6903f55f.diff

LOG: Revert "[TableGen][DirectX] generate DXIL operation table with TableGen."

This reverts commit 46fcdf23640ebb76271f91720583b0df6bed4481.

Reason: Broke the buildbots:
https://lab.llvm.org/buildbot/#/builders/77/builds/18671

Added: 
    

Modified: 
    llvm/lib/Target/DirectX/DXILOpLowering.cpp
    llvm/utils/TableGen/DXILEmitter.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Target/DirectX/DXILOpLowering.cpp b/llvm/lib/Target/DirectX/DXILOpLowering.cpp
index c52ef22bddf01..6ff4ebcd9812f 100644
--- a/llvm/lib/Target/DirectX/DXILOpLowering.cpp
+++ b/llvm/lib/Target/DirectX/DXILOpLowering.cpp
@@ -130,20 +130,25 @@ static std::string getTypeName(OverloadKind Kind, Type *Ty) {
 // Static properties.
 struct OpCodeProperty {
   DXIL::OpCode OpCode;
-  // Offset in DXILOpCodeNameTable.
-  unsigned OpCodeNameOffset;
+  // FIXME: change OpCodeName into index to a large string constant when move to
+  // tableGen.
+  const char *OpCodeName;
   DXIL::OpCodeClass OpCodeClass;
-  // Offset in DXILOpCodeClassNameTable.
-  unsigned OpCodeClassNameOffset;
   uint16_t OverloadTys;
   llvm::Attribute::AttrKind FuncAttr;
 };
 
-// Include getOpCodeClassName getOpCodeProperty and getOpCodeName which
-// generated by tableGen.
-#define DXIL_OP_OPERATION_TABLE
-#include "DXILOperation.inc"
-#undef DXIL_OP_OPERATION_TABLE
+static const char *getOpCodeClassName(const OpCodeProperty &Prop) {
+  // FIXME: generate this table with tableGen.
+  static const char *OpCodeClassNames[] = {
+      "binary",
+      "unary",
+  };
+  unsigned Index = static_cast<unsigned>(Prop.OpCodeClass);
+  assert(Index < (sizeof(OpCodeClassNames) / sizeof(OpCodeClassNames[0])) &&
+         "Out of bound OpCodeClass");
+  return OpCodeClassNames[Index];
+}
 
 static std::string constructOverloadName(OverloadKind Kind, Type *Ty,
                                          const OpCodeProperty &Prop) {
@@ -155,6 +160,27 @@ static std::string constructOverloadName(OverloadKind Kind, Type *Ty,
       .str();
 }
 
+static const OpCodeProperty *getOpCodeProperty(DXIL::OpCode DXILOp) {
+  // FIXME: generate this table with tableGen.
+  static const OpCodeProperty OpCodeProps[] = {
+      {DXIL::OpCode::Sin, "Sin", OpCodeClass::Unary,
+       OverloadKind::FLOAT | OverloadKind::HALF, Attribute::AttrKind::ReadNone},
+      {DXIL::OpCode::UMax, "UMax", OpCodeClass::Binary,
+       OverloadKind::I16 | OverloadKind::I32 | OverloadKind::I64,
+       Attribute::AttrKind::ReadNone},
+  };
+  // FIXME: change search to indexing with
+  // DXILOp once all DXIL op is added.
+  OpCodeProperty TmpProp;
+  TmpProp.OpCode = DXILOp;
+  const OpCodeProperty *Prop =
+      llvm::lower_bound(OpCodeProps, TmpProp,
+                        [](const OpCodeProperty &A, const OpCodeProperty &B) {
+                          return A.OpCode < B.OpCode;
+                        });
+  return Prop;
+}
+
 static FunctionCallee createDXILOpFunction(DXIL::OpCode DXILOp, Function &F,
                                            Module &M) {
   const OpCodeProperty *Prop = getOpCodeProperty(DXILOp);

diff  --git a/llvm/utils/TableGen/DXILEmitter.cpp b/llvm/utils/TableGen/DXILEmitter.cpp
index 74ed68f67d9e4..0a6bd2c892830 100644
--- a/llvm/utils/TableGen/DXILEmitter.cpp
+++ b/llvm/utils/TableGen/DXILEmitter.cpp
@@ -11,11 +11,10 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "SequenceToOffsetTable.h"
+#include "llvm/ADT/MapVector.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringSet.h"
-#include "llvm/ADT/StringSwitch.h"
 #include "llvm/TableGen/Error.h"
 #include "llvm/TableGen/Record.h"
 
@@ -192,7 +191,7 @@ static void emitDXILEnums(std::vector<DXILOperationData> &DXILOps,
 }
 
 // Emit map from llvm intrinsic to DXIL operation.
-static void emitDXILIntrinsicMap(std::vector<DXILOperationData> &DXILOps,
+static void EmitDXILIntrinsicMap(std::vector<DXILOperationData> &DXILOps,
                                  raw_ostream &OS) {
   OS << "\n";
   // FIXME: use array instead of SmallDenseMap.
@@ -209,141 +208,6 @@ static void emitDXILIntrinsicMap(std::vector<DXILOperationData> &DXILOps,
   OS << "\n";
 }
 
-static std::string emitDXILOperationFnAttr(StringRef FnAttr) {
-  return StringSwitch<std::string>(FnAttr)
-      .Case("rn", "Attribute::ReadNone")
-      .Case("ro", "Attribute::ReadOnly")
-      .Default("Attribute::None");
-}
-
-static std::string getOverloadKind(StringRef Overload) {
-  return StringSwitch<std::string>(Overload)
-      .Case("half", "OverloadKind::HALF")
-      .Case("float", "OverloadKind::FLOAT")
-      .Case("double", "OverloadKind::DOUBLE")
-      .Case("i1", "OverloadKind::I1")
-      .Case("i16", "OverloadKind::I16")
-      .Case("i32", "OverloadKind::I32")
-      .Case("i64", "OverloadKind::I64")
-      .Case("udt", "OverloadKind::UserDefineType")
-      .Case("obj", "OverloadKind::ObjectType")
-      .Default("OverloadKind::VOID");
-}
-
-static std::string getDXILOperationOverload(StringRef Overloads) {
-  SmallVector<StringRef> OverloadStrs;
-  Overloads.split(OverloadStrs, ';', /*MaxSplit*/ -1, /*KeepEmpty*/ false);
-  // Format is: OverloadKind::FLOAT | OverloadKind::HALF
-  assert(!OverloadStrs.empty() && "Invalid overloads");
-  auto It = OverloadStrs.begin();
-  std::string Result;
-  raw_string_ostream OS(Result);
-  OS << getOverloadKind(*It);
-  for (++It; It != OverloadStrs.end(); ++It) {
-    OS << " | " << getOverloadKind(*It);
-  }
-  return OS.str();
-}
-
-static std::string lowerFirstLetter(StringRef Name) {
-  if (Name.empty())
-    return "";
-
-  std::string LowerName = Name.str();
-  LowerName[0] = llvm::toLower(Name[0]);
-  return LowerName;
-}
-
-static std::string getDXILOpClassName(StringRef DXILOpClass) {
-  // Lower first letter expect for special case.
-  return StringSwitch<std::string>(DXILOpClass)
-      .Case("CBufferLoad", "cbufferLoad")
-      .Case("CBufferLoadLegacy", "cbufferLoadLegacy")
-      .Case("GSInstanceID", "gsInstanceID")
-      .Default(lowerFirstLetter(DXILOpClass));
-}
-
-static void emitDXILOperationTable(std::vector<DXILOperationData> &DXILOps,
-                                   raw_ostream &OS) {
-  // Sort by DXILOpID.
-  std::sort(DXILOps.begin(), DXILOps.end(),
-            [](DXILOperationData &A, DXILOperationData &B) {
-              return A.DXILOpID < B.DXILOpID;
-            });
-
-  // Collect Names.
-  SequenceToOffsetTable<std::string> OpClassStrings;
-  SequenceToOffsetTable<std::string> OpStrings;
-
-  StringSet<> ClassSet;
-  StringRef PrevCategory = "";
-  for (auto &DXILOp : DXILOps) {
-    OpStrings.add(DXILOp.DXILOp.str());
-
-    if (ClassSet.find(DXILOp.DXILClass) != ClassSet.end())
-      continue;
-    ClassSet.insert(DXILOp.DXILClass);
-    OpClassStrings.add(getDXILOpClassName(DXILOp.DXILClass));
-  }
-
-  // Layout names.
-  OpStrings.layout();
-  OpClassStrings.layout();
-
-  // Emit the DXIL operation table.
-  //{DXIL::OpCode::Sin, OpCodeNameIndex, OpCodeClass::Unary,
-  // OpCodeClassNameIndex,
-  // OverloadKind::FLOAT | OverloadKind::HALF, Attribute::AttrKind::ReadNone},
-  OS << "static const OpCodeProperty *getOpCodeProperty(DXIL::OpCode DXILOp) "
-        "{\n";
-
-  OS << "  static const OpCodeProperty OpCodeProps[] = {\n";
-  for (auto &DXILOp : DXILOps) {
-    OS << "  { DXIL::OpCode::" << DXILOp.DXILOp << ", "
-       << OpStrings.get(DXILOp.DXILOp.str())
-       << ", OpCodeClass::" << DXILOp.DXILClass << ", "
-       << OpClassStrings.get(getDXILOpClassName(DXILOp.DXILClass)) << ", "
-       << getDXILOperationOverload(DXILOp.OverloadTypes) << ", "
-       << emitDXILOperationFnAttr(DXILOp.FnAttr) << " },\n";
-  }
-  OS << "  };\n";
-
-  OS << "  // FIXME: change search to indexing with\n";
-  OS << "  // DXILOp once all DXIL op is added.\n";
-  OS << "  OpCodeProperty TmpProp;\n";
-  OS << "  TmpProp.OpCode = DXILOp;\n";
-  OS << "  const OpCodeProperty *Prop =\n";
-  OS << "      llvm::lower_bound(OpCodeProps, TmpProp,\n";
-  OS << "                        [](const OpCodeProperty &A, const "
-        "OpCodeProperty &B) {\n";
-  OS << "                          return A.OpCode < B.OpCode;\n";
-  OS << "                        });\n";
-  OS << "  assert(Prop && \"fail to find OpCodeProperty\");\n";
-  OS << "  return Prop;\n";
-  OS << "}\n\n";
-
-  // Emit the string tables.
-  OS << "static const char *getOpCodeName(DXIL::OpCode DXILOp) {\n\n";
-
-  OpStrings.emitStringLiteralDef(OS,
-                                 "  static const char DXILOpCodeNameTable[]");
-
-  OS << "  auto *Prop = getOpCodeProperty(DXILOp);\n";
-  OS << "  unsigned Index = Prop->OpCodeNameOffset;\n";
-  OS << "  return DXILOpCodeNameTable + Index;\n";
-  OS << "}\n\n";
-
-  OS << "static const char *getOpCodeClassName(const OpCodeProperty &Prop) "
-        "{\n\n";
-
-  OpClassStrings.emitStringLiteralDef(
-      OS, "  static const char DXILOpCodeClassNameTable[]");
-
-  OS << "  unsigned Index = Prop.OpCodeClassNameOffset;\n";
-  OS << "  return DXILOpCodeClassNameTable + Index;\n";
-  OS << "}\n ";
-}
-
 namespace llvm {
 
 void EmitDXILOperation(RecordKeeper &Records, raw_ostream &OS) {
@@ -362,12 +226,9 @@ void EmitDXILOperation(RecordKeeper &Records, raw_ostream &OS) {
   OS << "#endif\n\n";
 
   OS << "#ifdef DXIL_OP_INTRINSIC_MAP\n";
-  emitDXILIntrinsicMap(DXILOps, OS);
+  EmitDXILIntrinsicMap(DXILOps, OS);
   OS << "#endif\n\n";
 
-  OS << "#ifdef DXIL_OP_OPERATION_TABLE\n";
-  emitDXILOperationTable(DXILOps, OS);
-  OS << "#endif\n\n";
 
   OS << "\n";
 }


        


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