Title: [200896] trunk/Source/_javascript_Core
- Revision
- 200896
- Author
- benja...@webkit.org
- Date
- 2016-05-13 16:44:31 -0700 (Fri, 13 May 2016)
Log Message
[JSC] Emit the loads of emitLoadWithStructureCheck() in the order they are used
https://bugs.webkit.org/show_bug.cgi?id=157671
Patch by Benjamin Poulain <bpoul...@apple.com> on 2016-05-13
Reviewed by Mark Lam.
This improves the chances of having a value
when issuing the TEST.
* jit/JITPropertyAccess.cpp:
(JSC::JIT::emitLoadWithStructureCheck):
Modified Paths
Diff
Modified: trunk/Source/_javascript_Core/ChangeLog (200895 => 200896)
--- trunk/Source/_javascript_Core/ChangeLog 2016-05-13 23:42:17 UTC (rev 200895)
+++ trunk/Source/_javascript_Core/ChangeLog 2016-05-13 23:44:31 UTC (rev 200896)
@@ -1,3 +1,16 @@
+2016-05-13 Benjamin Poulain <bpoul...@apple.com>
+
+ [JSC] Emit the loads of emitLoadWithStructureCheck() in the order they are used
+ https://bugs.webkit.org/show_bug.cgi?id=157671
+
+ Reviewed by Mark Lam.
+
+ This improves the chances of having a value
+ when issuing the TEST.
+
+ * jit/JITPropertyAccess.cpp:
+ (JSC::JIT::emitLoadWithStructureCheck):
+
2016-05-13 Joseph Pecoraro <pecor...@apple.com>
Web Inspector: Inform augmenting client when inspector controller is destroyed
Modified: trunk/Source/_javascript_Core/jit/JITPropertyAccess.cpp (200895 => 200896)
--- trunk/Source/_javascript_Core/jit/JITPropertyAccess.cpp 2016-05-13 23:42:17 UTC (rev 200895)
+++ trunk/Source/_javascript_Core/jit/JITPropertyAccess.cpp 2016-05-13 23:44:31 UTC (rev 200896)
@@ -801,8 +801,8 @@
void JIT::emitLoadWithStructureCheck(int scope, Structure** structureSlot)
{
+ loadPtr(structureSlot, regT1);
emitGetVirtualRegister(scope, regT0);
- loadPtr(structureSlot, regT1);
addSlowCase(branchTestPtr(Zero, regT1));
load32(Address(regT1, Structure::structureIDOffset()), regT1);
addSlowCase(branch32(NotEqual, Address(regT0, JSCell::structureIDOffset()), regT1));
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