Title: [195622] trunk/Source/_javascript_Core
Revision
195622
Author
[email protected]
Date
2016-01-26 14:20:10 -0800 (Tue, 26 Jan 2016)

Log Message

It should be possible to disable FTL for a range like we disable DFG for a range
https://bugs.webkit.org/show_bug.cgi?id=153511

Reviewed by Geoffrey Garen.

* dfg/DFGTierUpCheckInjectionPhase.cpp:
(JSC::DFG::TierUpCheckInjectionPhase::run):
* runtime/Options.h:

Modified Paths

Diff

Modified: trunk/Source/_javascript_Core/ChangeLog (195621 => 195622)


--- trunk/Source/_javascript_Core/ChangeLog	2016-01-26 22:07:28 UTC (rev 195621)
+++ trunk/Source/_javascript_Core/ChangeLog	2016-01-26 22:20:10 UTC (rev 195622)
@@ -1,5 +1,16 @@
 2016-01-26  Filip Pizlo  <[email protected]>
 
+        It should be possible to disable FTL for a range like we disable DFG for a range
+        https://bugs.webkit.org/show_bug.cgi?id=153511
+
+        Reviewed by Geoffrey Garen.
+
+        * dfg/DFGTierUpCheckInjectionPhase.cpp:
+        (JSC::DFG::TierUpCheckInjectionPhase::run):
+        * runtime/Options.h:
+
+2016-01-26  Filip Pizlo  <[email protected]>
+
         Shifts by an amount computed using BitAnd with a mask that subsumes the shift's own mask should be rewired around the BitAnd
         https://bugs.webkit.org/show_bug.cgi?id=153505
 

Modified: trunk/Source/_javascript_Core/dfg/DFGTierUpCheckInjectionPhase.cpp (195621 => 195622)


--- trunk/Source/_javascript_Core/dfg/DFGTierUpCheckInjectionPhase.cpp	2016-01-26 22:07:28 UTC (rev 195621)
+++ trunk/Source/_javascript_Core/dfg/DFGTierUpCheckInjectionPhase.cpp	2016-01-26 22:20:10 UTC (rev 195622)
@@ -54,6 +54,9 @@
         if (m_graph.m_profiledBlock->m_didFailFTLCompilation)
             return false;
 
+        if (!Options::bytecodeRangeToFTLCompile().isInRange(m_graph.m_profiledBlock->instructionCount()))
+            return false;
+
 #if ENABLE(FTL_JIT)
         FTL::CapabilityLevel level = FTL::canCompile(m_graph);
         if (level == FTL::CannotCompile)

Modified: trunk/Source/_javascript_Core/runtime/Options.h (195621 => 195622)


--- trunk/Source/_javascript_Core/runtime/Options.h	2016-01-26 22:07:28 UTC (rev 195621)
+++ trunk/Source/_javascript_Core/runtime/Options.h	2016-01-26 22:20:10 UTC (rev 195622)
@@ -141,6 +141,7 @@
     v(bool, dumpFTLDisassembly, false, "dumps disassembly of FTL function upon compilation") \
     v(bool, dumpAllDFGNodes, false, nullptr) \
     v(optionRange, bytecodeRangeToDFGCompile, 0, "bytecode size range to allow DFG compilation on, e.g. 1:100") \
+    v(optionRange, bytecodeRangeToFTLCompile, 0, "bytecode size range to allow FTL compilation on, e.g. 1:100") \
     v(optionString, dfgWhitelist, nullptr, "file with list of function signatures to allow DFG compilation on") \
     v(bool, dumpSourceAtDFGTime, false, "dumps source code of JS function being DFG compiled") \
     v(bool, dumpBytecodeAtDFGTime, false, "dumps bytecode of JS function being DFG compiled") \
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