From dd91e772430dc294e3bf478c119ef8d43c0a3358 Mon Sep 17 00:00:00 2001
From: Simon Hausmann <simon.hausmann@nokia.com>
Date: Mon, 12 Mar 2012 14:11:15 +0100
Subject: Imported WebKit commit 3db4eb1820ac8fb03065d7ea73a4d9db1e8fea1a
 (http://svn.webkit.org/repository/webkit/trunk@110422)

This includes build fixes for the latest qtbase/qtdeclarative as well as the final QML2 API.
---
 Source/JavaScriptCore/jit/JIT.cpp | 32 +++++++++++++++-----------------
 1 file changed, 15 insertions(+), 17 deletions(-)

(limited to 'Source/JavaScriptCore/jit/JIT.cpp')

diff --git a/Source/JavaScriptCore/jit/JIT.cpp b/Source/JavaScriptCore/jit/JIT.cpp
index 2adc596ce..541cc896a 100644
--- a/Source/JavaScriptCore/jit/JIT.cpp
+++ b/Source/JavaScriptCore/jit/JIT.cpp
@@ -35,7 +35,7 @@ JSC::MacroAssemblerX86Common::SSE2CheckState JSC::MacroAssemblerX86Common::s_sse
 #endif
 
 #include "CodeBlock.h"
-#include "CryptographicallyRandomNumber.h"
+#include <wtf/CryptographicallyRandomNumber.h>
 #include "DFGNode.h" // for DFG_SUCCESS_STATS
 #include "Interpreter.h"
 #include "JITInlineMethods.h"
@@ -102,7 +102,7 @@ void JIT::emitOptimizationCheck(OptimizationCheckKind kind)
     Jump skipOptimize = branchAdd32(Signed, TrustedImm32(kind == LoopOptimizationCheck ? Options::executionCounterIncrementForLoop : Options::executionCounterIncrementForReturn), AbsoluteAddress(m_codeBlock->addressOfJITExecuteCounter()));
     JITStubCall stubCall(this, kind == LoopOptimizationCheck ? cti_optimize_from_loop : cti_optimize_from_ret);
     if (kind == LoopOptimizationCheck)
-        stubCall.addArgument(Imm32(m_bytecodeOffset));
+        stubCall.addArgument(TrustedImm32(m_bytecodeOffset));
     stubCall.call();
     skipOptimize.link(this);
 }
@@ -235,14 +235,10 @@ void JIT::privateCompileMainPass()
         DEFINE_UNARY_OP(op_is_object)
         DEFINE_UNARY_OP(op_is_string)
         DEFINE_UNARY_OP(op_is_undefined)
-#if USE(JSVALUE64)
-        DEFINE_UNARY_OP(op_negate)
-#endif
         DEFINE_UNARY_OP(op_typeof)
 
         DEFINE_OP(op_add)
         DEFINE_OP(op_bitand)
-        DEFINE_OP(op_bitnot)
         DEFINE_OP(op_bitor)
         DEFINE_OP(op_bitxor)
         DEFINE_OP(op_call)
@@ -302,9 +298,7 @@ void JIT::privateCompileMainPass()
         DEFINE_OP(op_mod)
         DEFINE_OP(op_mov)
         DEFINE_OP(op_mul)
-#if USE(JSVALUE32_64)
         DEFINE_OP(op_negate)
-#endif
         DEFINE_OP(op_neq)
         DEFINE_OP(op_neq_null)
         DEFINE_OP(op_new_array)
@@ -437,7 +431,6 @@ void JIT::privateCompileSlowCases()
         switch (m_interpreter->getOpcodeID(currentInstruction->u.opcode)) {
         DEFINE_SLOWCASE_OP(op_add)
         DEFINE_SLOWCASE_OP(op_bitand)
-        DEFINE_SLOWCASE_OP(op_bitnot)
         DEFINE_SLOWCASE_OP(op_bitor)
         DEFINE_SLOWCASE_OP(op_bitxor)
         DEFINE_SLOWCASE_OP(op_call)
@@ -475,10 +468,9 @@ void JIT::privateCompileSlowCases()
         DEFINE_SLOWCASE_OP(op_method_check)
         DEFINE_SLOWCASE_OP(op_mod)
         DEFINE_SLOWCASE_OP(op_mul)
-#if USE(JSVALUE32_64)
         DEFINE_SLOWCASE_OP(op_negate)
-#endif
         DEFINE_SLOWCASE_OP(op_neq)
+        DEFINE_SLOWCASE_OP(op_new_array)
         DEFINE_SLOWCASE_OP(op_new_object)
         DEFINE_SLOWCASE_OP(op_new_func)
         DEFINE_SLOWCASE_OP(op_new_func_exp)
@@ -509,7 +501,7 @@ void JIT::privateCompileSlowCases()
         
 #if ENABLE(VALUE_PROFILER)
         if (m_canBeOptimized)
-            add32(Imm32(1), AbsoluteAddress(&rareCaseProfile->m_counter));
+            add32(TrustedImm32(1), AbsoluteAddress(&rareCaseProfile->m_counter));
 #endif
 
         emitJumpSlowToHot(jump(), 0);
@@ -527,7 +519,7 @@ void JIT::privateCompileSlowCases()
 #endif
 }
 
-JITCode JIT::privateCompile(CodePtr* functionEntryArityCheck)
+JITCode JIT::privateCompile(CodePtr* functionEntryArityCheck, JITCompilationEffort effort)
 {
 #if ENABLE(JIT_VERBOSE_OSR)
     printf("Compiling JIT code!\n");
@@ -581,7 +573,7 @@ JITCode JIT::privateCompile(CodePtr* functionEntryArityCheck)
         }
 #endif
 
-        addPtr(Imm32(m_codeBlock->m_numCalleeRegisters * sizeof(Register)), callFrameRegister, regT1);
+        addPtr(TrustedImm32(m_codeBlock->m_numCalleeRegisters * sizeof(Register)), callFrameRegister, regT1);
         registerFileCheck = branchPtr(Below, AbsoluteAddress(m_globalData->interpreter->registerFile().addressOfEnd()), regT1);
     }
 
@@ -589,7 +581,7 @@ JITCode JIT::privateCompile(CodePtr* functionEntryArityCheck)
     
 #if ENABLE(VALUE_PROFILER)
     if (m_canBeOptimized)
-        add32(Imm32(1), AbsoluteAddress(&m_codeBlock->m_executionEntryCount));
+        add32(TrustedImm32(1), AbsoluteAddress(&m_codeBlock->m_executionEntryCount));
 #endif
 
     privateCompileMainPass();
@@ -625,7 +617,9 @@ JITCode JIT::privateCompile(CodePtr* functionEntryArityCheck)
 
     ASSERT(m_jmpTable.isEmpty());
 
-    LinkBuffer patchBuffer(*m_globalData, this, m_codeBlock);
+    LinkBuffer patchBuffer(*m_globalData, this, m_codeBlock, effort);
+    if (patchBuffer.didFailToAllocate())
+        return JITCode();
 
     // Translate vPC offsets into addresses in JIT generated code, for switch tables.
     for (unsigned i = 0; i < m_switches.size(); ++i) {
@@ -702,7 +696,7 @@ JITCode JIT::privateCompile(CodePtr* functionEntryArityCheck)
     }
 
 #if ENABLE(DFG_JIT) || ENABLE(LLINT)
-    if (m_canBeOptimized
+    if (canBeOptimized()
 #if ENABLE(LLINT)
         || true
 #endif
@@ -721,6 +715,10 @@ JITCode JIT::privateCompile(CodePtr* functionEntryArityCheck)
     
     CodeRef result = patchBuffer.finalizeCode();
     
+    m_globalData->machineCodeBytesPerBytecodeWordForBaselineJIT.add(
+        static_cast<double>(result.size()) /
+        static_cast<double>(m_codeBlock->instructions().size()));
+    
 #if ENABLE(JIT_VERBOSE)
     dataLog("JIT generated code for %p at [%p, %p).\n", m_codeBlock, result.executableMemory()->start(), result.executableMemory()->end());
 #endif
-- 
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