Title: [143677] trunk/Source/_javascript_Core
- Revision
- 143677
- Author
- msab...@apple.com
- Date
- 2013-02-21 18:10:01 -0800 (Thu, 21 Feb 2013)
Log Message
25-30% regression in V8 RayTrace test in 32 bit builds with JIT disabled
https://bugs.webkit.org/show_bug.cgi?id=110539
Reviewed by Filip Pizlo.
Change the scale used to lookup pointers in JSGlobalObject::m_specialPointers to be 4 bytes for
the 32 bit version of the interpreter.
* llint/LowLevelInterpreter32_64.asm:
Modified Paths
Diff
Modified: trunk/Source/_javascript_Core/ChangeLog (143676 => 143677)
--- trunk/Source/_javascript_Core/ChangeLog 2013-02-22 01:43:29 UTC (rev 143676)
+++ trunk/Source/_javascript_Core/ChangeLog 2013-02-22 02:10:01 UTC (rev 143677)
@@ -1,3 +1,15 @@
+2013-02-21 Michael Saboff <msab...@apple.com>
+
+ 25-30% regression in V8 RayTrace test in 32 bit builds with JIT disabled
+ https://bugs.webkit.org/show_bug.cgi?id=110539
+
+ Reviewed by Filip Pizlo.
+
+ Change the scale used to lookup pointers in JSGlobalObject::m_specialPointers to be 4 bytes for
+ the 32 bit version of the interpreter.
+
+ * llint/LowLevelInterpreter32_64.asm:
+
2013-02-21 Roger Fong <roger_f...@apple.com>
Unreviewed. Add executable property to cmd file.
Modified: trunk/Source/_javascript_Core/llint/LowLevelInterpreter32_64.asm (143676 => 143677)
--- trunk/Source/_javascript_Core/llint/LowLevelInterpreter32_64.asm 2013-02-22 01:43:29 UTC (rev 143676)
+++ trunk/Source/_javascript_Core/llint/LowLevelInterpreter32_64.asm 2013-02-22 02:10:01 UTC (rev 143677)
@@ -1486,7 +1486,7 @@
loadp CodeBlock[cfr], t2
loadp CodeBlock::m_globalObject[t2], t2
bineq TagOffset[cfr, t0, 8], CellTag, .opJneqPtrBranch
- loadp JSGlobalObject::m_specialPointers[t2, t1, 8], t1
+ loadp JSGlobalObject::m_specialPointers[t2, t1, 4], t1
bpeq PayloadOffset[cfr, t0, 8], t1, .opJneqPtrFallThrough
.opJneqPtrBranch:
dispatchBranch(12[PC])
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