Bug 691898 - Use YARR interpreter instead of PCRE on platforms where YARR JIT is not supported. r=dmandelin

js/src/Makefile.in

@@ -337,20 +337,21 @@ CPPSRCS += 	checks.cc \
 # END enclude sources for V8 dtoa
 #############################################
 
-# For architectures without YARR JIT, PCRE is faster than the YARR
-# interpreter (bug 684559).
-
 ifeq (,$(filter arm% sparc %86 x86_64 mips%,$(TARGET_CPU)))
 
-VPATH +=        $(srcdir)/yarr/pcre \
+VPATH +=        $(srcdir)/assembler \
+                $(srcdir)/assembler/wtf \
+                $(srcdir)/yarr \
 		$(NULL)
 
 CPPSRCS += \
-                pcre_compile.cpp \
-                pcre_exec.cpp \
-                pcre_tables.cpp \
-                pcre_xclass.cpp \
-                pcre_ucp_searchfuncs.cpp \
+                OSAllocatorOS2.cpp \
+                OSAllocatorPosix.cpp \
+                OSAllocatorWin.cpp \
+                PageBlock.cpp \
+                YarrInterpreter.cpp \
+                YarrPattern.cpp \
+                YarrSyntaxChecker.cpp \
 		$(NULL)
 else
 
@@ -885,10 +886,10 @@ endif
 # Needed to "configure" it correctly.  Unfortunately these
 # flags wind up being applied to all code in js/src, not just
 # the code in js/src/assembler.
-CXXFLAGS += -DUSE_SYSTEM_MALLOC=1 -DENABLE_ASSEMBLER=1
+CXXFLAGS += -DUSE_SYSTEM_MALLOC=1
 
 ifneq (,$(ENABLE_YARR_JIT)$(ENABLE_METHODJIT))
-CXXFLAGS +=  -DENABLE_JIT=1
+CXXFLAGS +=  -DENABLE_JIT=1 -DENABLE_ASSEMBLER=1
 endif
 
 INCLUDES +=	-I$(srcdir)/assembler -I$(srcdir)/yarr

js/src/jsapi.cpp

@@ -702,7 +702,9 @@ JSRuntime::JSRuntime()
     ownerThread_(NULL),
 #endif
     tempLifoAlloc(TEMP_LIFO_ALLOC_PRIMARY_CHUNK_SIZE),
+#if ENABLE_ASSEMBLER
     execAlloc_(NULL),
+#endif
     bumpAlloc_(NULL),
     nativeStackBase(0),
     nativeStackQuota(0),
@@ -864,7 +866,9 @@ JSRuntime::~JSRuntime()
 {
     JS_ASSERT(onOwnerThread());
 
+#if ENABLE_ASSEMBLER
     delete_<JSC::ExecutableAllocator>(execAlloc_);
+#endif
     delete_<WTF::BumpPointerAllocator>(bumpAlloc_);
 
 #ifdef DEBUG

js/src/jscntxt.cpp

@@ -105,9 +105,11 @@ JSRuntime::sizeOfExcludingThis(JSMallocSizeOfFun mallocSizeOf, size_t *normal, s
 
     if (regexpCode) {
         size_t method = 0, regexp = 0, unused = 0;
+#if ENABLE_ASSEMBLER
         if (execAlloc_)
             execAlloc_->sizeOfCode(&method, &regexp, &unused);
         JS_ASSERT(method == 0);     /* this execAlloc is only used for regexp code */
+#endif
         *regexpCode = regexp + unused;
     }
 
@@ -132,10 +134,13 @@ void
 JSRuntime::setJitHardening(bool enabled)
 {
     jitHardening = enabled;
+#if ENABLE_ASSEMBLER
     if (execAlloc_)
         execAlloc_->setRandomize(enabled);
+#endif
 }
 
+#if ENABLE_ASSEMBLER
 JSC::ExecutableAllocator *
 JSRuntime::createExecutableAllocator(JSContext *cx)
 {
@@ -149,6 +154,7 @@ JSRuntime::createExecutableAllocator(JSContext *cx)
         js_ReportOutOfMemory(cx);
     return execAlloc_;
 }
+#endif
 
 WTF::BumpPointerAllocator *
 JSRuntime::createBumpPointerAllocator(JSContext *cx)

js/src/jscntxt.h

@@ -224,16 +224,22 @@ struct JSRuntime : js::RuntimeFriendFields
      * Both of these allocators are used for regular expression code which is shared at the
      * thread-data level.
      */
+#if ENABLE_ASSEMBLER
     JSC::ExecutableAllocator *execAlloc_;
+#endif
     WTF::BumpPointerAllocator *bumpAlloc_;
 
+#if ENABLE_ASSEMBLER
     JSC::ExecutableAllocator *createExecutableAllocator(JSContext *cx);
+#endif
     WTF::BumpPointerAllocator *createBumpPointerAllocator(JSContext *cx);
 
   public:
+#if ENABLE_ASSEMBLER
     JSC::ExecutableAllocator *getExecutableAllocator(JSContext *cx) {
         return execAlloc_ ? execAlloc_ : createExecutableAllocator(cx);
     }
+#endif
     WTF::BumpPointerAllocator *getBumpPointerAllocator(JSContext *cx) {
         return bumpAlloc_ ? bumpAlloc_ : createBumpPointerAllocator(cx);
     }

js/src/jsprvtd.h

@@ -318,12 +318,13 @@ typedef Handle<Value>              HandleValue;
 
 } /* namespace js */
 
+#if ENABLE_ASSEMBLER
 namespace JSC {
 
 class ExecutableAllocator;
 
 } /* namespace JSC */
-
+#endif
 namespace WTF {
 
 class BumpPointerAllocator;

js/src/vm/RegExpObject-inl.h

@@ -137,6 +137,7 @@ RegExpObject::setSticky(bool enabled)
     setSlot(STICKY_FLAG_SLOT, BooleanValue(enabled));
 }
 
+#if ENABLE_YARR_JIT
 /* This function should be deleted once bad Android platforms phase out. See bug 604774. */
 inline bool
 detail::RegExpCode::isJITRuntimeEnabled(JSContext *cx)
@@ -147,6 +148,7 @@ detail::RegExpCode::isJITRuntimeEnabled(JSContext *cx)
     return true;
 #endif
 }
+#endif
 
 inline bool
 RegExpToShared(JSContext *cx, JSObject &obj, RegExpGuard *g)

js/src/vm/RegExpObject.cpp

@@ -167,7 +167,6 @@ MatchPairs::checkAgainst(size_t inputLength)
 
 /* detail::RegExpCode */
 
-#if ENABLE_YARR_JIT
 void
 RegExpCode::reportYarrError(JSContext *cx, TokenStream *ts, ErrorCode error)
 {
@@ -199,46 +198,9 @@ RegExpCode::reportYarrError(JSContext *cx, TokenStream *ts, ErrorCode error)
     }
 }
 
-#else /* !ENABLE_YARR_JIT */
-
-void
-RegExpCode::reportPCREError(JSContext *cx, int error)
-{
-#define REPORT(msg_) \
-    JS_ReportErrorFlagsAndNumberUC(cx, JSREPORT_ERROR, js_GetErrorMessage, NULL, msg_); \
-    return
-    switch (error) {
-      case -2: REPORT(JSMSG_REGEXP_TOO_COMPLEX);
-      case 0: JS_NOT_REACHED("Precondition violation: an error must have occurred.");
-      case 1: REPORT(JSMSG_TRAILING_SLASH);
-      case 2: REPORT(JSMSG_TRAILING_SLASH);
-      case 3: REPORT(JSMSG_REGEXP_TOO_COMPLEX);
-      case 4: REPORT(JSMSG_BAD_QUANTIFIER);
-      case 5: REPORT(JSMSG_BAD_QUANTIFIER);
-      case 6: REPORT(JSMSG_BAD_CLASS_RANGE);
-      case 7: REPORT(JSMSG_REGEXP_TOO_COMPLEX);
-      case 8: REPORT(JSMSG_BAD_CLASS_RANGE);
-      case 9: REPORT(JSMSG_BAD_QUANTIFIER);
-      case 10: REPORT(JSMSG_UNMATCHED_RIGHT_PAREN);
-      case 11: REPORT(JSMSG_REGEXP_TOO_COMPLEX);
-      case 12: REPORT(JSMSG_UNMATCHED_RIGHT_PAREN);
-      case 13: REPORT(JSMSG_REGEXP_TOO_COMPLEX);
-      case 14: REPORT(JSMSG_MISSING_PAREN);
-      case 15: REPORT(JSMSG_BAD_BACKREF);
-      case 16: REPORT(JSMSG_REGEXP_TOO_COMPLEX);
-      case 17: REPORT(JSMSG_REGEXP_TOO_COMPLEX);
-      default:
-        JS_NOT_REACHED("Precondition violation: unknown PCRE error code.");
-    }
-#undef REPORT
-}
-
-#endif /* ENABLE_YARR_JIT */
-
 bool
 RegExpCode::compile(JSContext *cx, JSLinearString &pattern, unsigned *parenCount, RegExpFlag flags)
 {
-#if ENABLE_YARR_JIT
     /* Parse the pattern. */
     ErrorCode yarrError;
     YarrPattern yarrPattern(pattern, bool(flags & IgnoreCaseFlag), bool(flags & MultilineFlag),
@@ -255,7 +217,7 @@ RegExpCode::compile(JSContext *cx, JSLinearString &pattern, unsigned *parenCount
      * case we have to bytecode compile it.
      */
 
-#ifdef JS_METHODJIT
+#if ENABLE_YARR_JIT && defined(JS_METHODJIT)
     if (isJITRuntimeEnabled(cx) && !yarrPattern.m_containsBackreferences) {
         JSC::ExecutableAllocator *execAlloc = cx->runtime->getExecutableAllocator(cx);
         if (!execAlloc) {
@@ -276,21 +238,11 @@ RegExpCode::compile(JSContext *cx, JSLinearString &pattern, unsigned *parenCount
         return false;
     }
 
+#if ENABLE_YARR_JIT
     codeBlock.setFallBack(true);
+#endif
     byteCode = byteCompile(yarrPattern, bumpAlloc).get();
     return true;
-#else /* !defined(ENABLE_YARR_JIT) */
-    int error = 0;
-    compiled = jsRegExpCompile(pattern.chars(), pattern.length(),
-                  ignoreCase() ? JSRegExpIgnoreCase : JSRegExpDoNotIgnoreCase,
-                  multiline() ? JSRegExpMultiline : JSRegExpSingleLine,
-                  parenCount, &error);
-    if (error) {
-        reportPCREError(cx, error);
-        return false;
-    }
-    return true;
-#endif
 }
 
 RegExpRunStatus
@@ -305,19 +257,12 @@ RegExpCode::execute(JSContext *cx, const jschar *chars, size_t length, size_t st
     else
         result = JSC::Yarr::execute(codeBlock, chars, start, length, output);
 #else
-    result = jsRegExpExecute(cx, compiled, chars, length, start, output, outputCount);
+    result = JSC::Yarr::interpret(byteCode, chars, start, length, output);
 #endif
 
     if (result == -1)
         return RegExpRunStatus_Success_NotFound;
 
-#if !ENABLE_YARR_JIT
-    if (result < 0) {
-        reportPCREError(cx, result);
-        return RegExpRunStatus_Error;
-    }
-#endif
-
     JS_ASSERT(result >= 0);
     return RegExpRunStatus_Success;
 }

js/src/vm/RegExpObject.h

@@ -51,10 +51,8 @@
 #include "yarr/Yarr.h"
 #if ENABLE_YARR_JIT
 #include "yarr/YarrJIT.h"
-#include "yarr/YarrSyntaxChecker.h"
-#else
-#include "yarr/pcre/pcre.h"
 #endif
+#include "yarr/YarrSyntaxChecker.h"
 
 /*
  * JavaScript Regular Expressions
@@ -112,68 +110,51 @@ namespace detail {
 
 class RegExpCode
 {
-#if ENABLE_YARR_JIT
     typedef JSC::Yarr::BytecodePattern BytecodePattern;
     typedef JSC::Yarr::ErrorCode ErrorCode;
+    typedef JSC::Yarr::YarrPattern YarrPattern;
+#if ENABLE_YARR_JIT
     typedef JSC::Yarr::JSGlobalData JSGlobalData;
     typedef JSC::Yarr::YarrCodeBlock YarrCodeBlock;
-    typedef JSC::Yarr::YarrPattern YarrPattern;
 
     /* Note: Native code is valid only if |codeBlock.isFallBack() == false|. */
     YarrCodeBlock   codeBlock;
-    BytecodePattern *byteCode;
-#else
-    JSRegExp        *compiled;
 #endif
+    BytecodePattern *byteCode;
 
   public:
     RegExpCode()
       :
 #if ENABLE_YARR_JIT
         codeBlock(),
-        byteCode(NULL)
-#else
-        compiled(NULL)
 #endif
+        byteCode(NULL)
     { }
 
     ~RegExpCode() {
 #if ENABLE_YARR_JIT
         codeBlock.release();
+#endif
         if (byteCode)
             Foreground::delete_<BytecodePattern>(byteCode);
-#else
-        if (compiled)
-            jsRegExpFree(compiled);
-#endif
     }
 
     static bool checkSyntax(JSContext *cx, TokenStream *tokenStream, JSLinearString *source) {
-#if ENABLE_YARR_JIT
         ErrorCode error = JSC::Yarr::checkSyntax(*source);
         if (error == JSC::Yarr::NoError)
             return true;
 
         reportYarrError(cx, tokenStream, error);
         return false;
-#else
-# error "Syntax checking not implemented for !ENABLE_YARR_JIT"
-#endif
     }
 
 #if ENABLE_YARR_JIT
     static inline bool isJITRuntimeEnabled(JSContext *cx);
-    static void reportYarrError(JSContext *cx, TokenStream *ts, JSC::Yarr::ErrorCode error);
-#else
-    static void reportPCREError(JSContext *cx, int error);
 #endif
+    static void reportYarrError(JSContext *cx, TokenStream *ts, JSC::Yarr::ErrorCode error);
 
     static size_t getOutputSize(size_t pairCount) {
-#if ENABLE_YARR_JIT
         return pairCount * 2;
-#else
-        return pairCount * 3; /* Should be x2, but PCRE has... needs. */
-#endif
     }
 
     bool compile(JSContext *cx, JSLinearString &pattern, unsigned *parenCount, RegExpFlag flags);

js/src/yarr/wtfbridge.h

@@ -49,9 +49,7 @@
 #include "jsprvtd.h"
 #include "vm/String.h"
 #include "assembler/wtf/Platform.h"
-#if ENABLE_YARR_JIT
 #include "assembler/jit/ExecutableAllocator.h"
-#endif
 
 namespace JSC { namespace Yarr {