Changeset 156016 in webkit for trunk/Source/JavaScriptCore/ChangeLog

Timestamp:

Sep 17, 2013, 6:04:31 PM (12 years ago)

Author:

[email protected]

Message:

DFG should use the (x & 0x7fffffff) trick for doing overflow and neg-zero checks on negation in one go
​https://bugs.webkit.org/show_bug.cgi?id=121520

Reviewed by Oliver Hunt.

• dfg/DFGSpeculativeJIT.cpp:

(JSC::DFG::SpeculativeJIT::compileArithNegate):

• ftl/FTLLowerDFGToLLVM.cpp:

(JSC::FTL::LowerDFGToLLVM::compileArithNegate):

File:

• trunk/Source/JavaScriptCore/ChangeLog (modified) (1 diff)

trunk/Source/JavaScriptCore/ChangeLog

@@ +1 @@
+2013-09-17  Filip Pizlo  <[email protected]>
+
+        DFG should use the (x & 0x7fffffff) trick for doing overflow and neg-zero checks on negation in one go
+        https://bugs.webkit.org/show_bug.cgi?id=121520
+
+        Reviewed by Oliver Hunt.
+
+        * dfg/DFGSpeculativeJIT.cpp:
+        (JSC::DFG::SpeculativeJIT::compileArithNegate):
+        * ftl/FTLLowerDFGToLLVM.cpp:
+        (JSC::FTL::LowerDFGToLLVM::compileArithNegate):
+
 2013-09-17  Andreas Kling  <[email protected]>