remove use of RTTI

Author: j2kun

mlir/CMakeLists.txt

@@ -204,8 +204,7 @@ endif()
 
 #-------------------------------------------------------------------------------
 # MLIR Pattern Catalog Generator Configuration
-# Requires:
-#   RTTI to be enabled (set with -DLLVM_ENABLE_RTTI=ON)
+#
 # When enabled, causes all rewriter patterns to dump their type names and the
 # names of affected operations, which can be used to build a search index
 # mapping operations to patterns.
@@ -217,7 +216,6 @@ set(MLIR_ENABLE_CATALOG_GENERATOR 0 CACHE BOOL
 if (MLIR_ENABLE_CATALOG_GENERATOR)
   message(STATUS "Enabling MLIR pattern catalog generator")
   add_definitions(-DMLIR_ENABLE_CATALOG_GENERATOR)
-  add_definitions(-DLLVM_ENABLE_RTTI)
 endif()
 
 set(CMAKE_INCLUDE_CURRENT_DIR ON)

mlir/include/mlir/IR/PatternMatch.h

@@ -476,9 +476,8 @@ class RewriterBase : public OpBuilder {
   };
 
   struct CatalogingListener : public RewriterBase::ForwardingListener {
-    CatalogingListener(OpBuilder::Listener *listener,
-                       const std::string &patternName, raw_ostream &os,
-                       std::mutex &writeMutex)
+    CatalogingListener(OpBuilder::Listener *listener, StringRef patternName,
+                       raw_ostream &os, std::mutex &writeMutex)
         : RewriterBase::ForwardingListener(listener), patternName(patternName),
           os(os), writeMutex(writeMutex) {}
 
@@ -544,7 +543,7 @@ class RewriterBase : public OpBuilder {
     }
 
   private:
-    const std::string &patternName;
+    StringRef patternName;
     raw_ostream &os;
     std::mutex &writeMutex;
   };

mlir/lib/Rewrite/PatternApplicator.cpp

@@ -18,7 +18,6 @@
 #ifdef MLIR_ENABLE_CATALOG_GENERATOR
 #include "llvm/Support/FileSystem.h"
 #include "llvm/Support/raw_ostream.h"
-#include <cxxabi.h>
 #include <mutex>
 #endif
 
@@ -232,22 +231,9 @@ LogicalResult PatternApplicator::matchAndRewrite(
 
 #ifdef MLIR_ENABLE_CATALOG_GENERATOR
             OpBuilder::Listener *oldListener = rewriter.getListener();
-            int status;
-            const char *mangledPatternName = typeid(*pattern).name();
-            char *demangled = abi::__cxa_demangle(mangledPatternName, nullptr,
-                                                  nullptr, &status);
-            std::string demangledPatternName;
-            if (status == 0 && demangled) {
-              demangledPatternName = demangled;
-              free(demangled);
-            } else {
-              // Fallback in case demangling fails.
-              demangledPatternName = mangledPatternName;
-            }
-
             RewriterBase::CatalogingListener *catalogingListener =
                 new RewriterBase::CatalogingListener(
-                    oldListener, demangledPatternName, catalogOs,
+                    oldListener, pattern->getDebugName(), catalogOs,
                     catalogWriteMutex);
             rewriter.setListener(catalogingListener);
 #endif