Bug 144694 – Dumping OSR ExitValue should expand materializations only once

• Component: JavaScriptCore
• Status: RESOLVED FIXED

[Basile Clement]

Dumping FTL ExitValue should expand materializations only once

[Basile Clement]

Created attachment 252600 [details]
Patch

[Basile Clement]

Before:
    
    Exit values: arg2:InJSStack:arg2 arg1:InJSStack:arg1 arg0:InJSStack:this loc0:Constant(Cell: 0x11204f880 (%A0:global), ID: 377) loc1:Dead loc2:Materialize(0x113fe3ea0:PhantomNewObject(NamedPropertyPLoc(0) => Materialize(0x113fe3ed0:PhantomNewObject(StructurePLoc(0) => Constant(Structure: 0x11208f910:[Object, {}, NonArray, Proto:0x112077ff0], ID: 1))), StructurePLoc(0) => Constant(Structure: 0x11208d4c0:[Object, {a:0}, NonArray, Proto:0x112077ff0], ID: 1))) loc3:Dead loc4:Dead loc5:Dead loc6:Dead loc7:Dead loc8:Dead loc9:Dead

After:

    Exit values: arg2:InJSStack:arg2 arg1:InJSStack:arg1 arg0:InJSStack:this loc0:Constant(Cell: 0x10804f880 (%B6:global), ID: 377) loc1:Dead loc2:Materialize(0x109fe3ea0:..) loc3:Dead loc4:Dead loc5:Dead loc6:Dead loc7:Dead loc8:Dead loc9:Dead
    Materializations: 
        Materialize(0x109fe3ed0:PhantomNewObject(StructurePLoc(0) => Constant(Structure: 0x10808f910:[Object, {}, NonArray, Proto:0x108077ff0], ID: 1)))
        Materialize(0x109fe3ea0:PhantomNewObject(NamedPropertyPLoc(0) => Materialize(0x109fe3ed0:..), StructurePLoc(0) => Constant(Structure: 0x10808d4c0:[Object, {a:0}, NonArray, Proto:0x108077ff0], ID: 1)))

[Filip Pizlo]

Comment on attachment 252600 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=252600&action=review

> Source/JavaScriptCore/ftl/FTLCompile.cpp:399
> +                dataLog("    Materializations: \n");

Maybe change this to not print the "Materializations:" line if exit.m_materializations.isEmpty()

> Source/JavaScriptCore/ftl/FTLLowerDFGToLLVM.cpp:7990
> +            dataLog("        Materializations: \n");

Ditto.

[Basile Clement]

(In reply to comment #3)
> Comment on attachment 252600 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=252600&action=review
> 
> > Source/JavaScriptCore/ftl/FTLCompile.cpp:399
> > +                dataLog("    Materializations: \n");
> 
> Maybe change this to not print the "Materializations:" line if
> exit.m_materializations.isEmpty()
> 
> > Source/JavaScriptCore/ftl/FTLLowerDFGToLLVM.cpp:7990
> > +            dataLog("        Materializations: \n");
> 
> Ditto.

Makes sense, adding that before landing.

[Basile Clement]

Committed r183939: <http://trac.webkit.org/changeset/183939>

[Basile Clement]

Missing braces fixed in r183944 <http://trac.webkit.org/changeset/183944>