Conditions with that always returns true is 'if' necessary? (original) (raw)

Otávio Gonçalves de Santana otaviojava at java.net
Tue Apr 22 12:14:44 UTC 2014


Thank for your opinion. Done this way to keep the pattern.

diff -r 57c1da89ae1a src/share/classes/java/lang/invoke/BoundMethodHandle.java --- a/src/share/classes/java/lang/invoke/BoundMethodHandle.java Wed Apr 16 12:32:36 2014 -0700 +++ b/src/share/classes/java/lang/invoke/BoundMethodHandle.java Mon Apr 21 09:50:29 2014 -0300 @@ -66,8 +66,7 @@ try { switch (xtype) { case 'L':

fast path.

SpeciesData.EMPTY.extendWithType('L').constructor[0].invokeBasic(type, form, x);

SpeciesData.EMPTY.extendWithType('I').constructor[0].invokeBasic(type, form, ValueConversions.widenSubword(x)); case 'J':

On Tue, Apr 22, 2014 at 5:07 AM, Paul Sandoz <paul.sandoz at oracle.com> wrote:

Hi Otávio,

On Apr 21, 2014, at 3:06 PM, Otávio Gonçalves de Santana <_ _otaviojava at java.net> wrote: > Hello everyone, one question. > Conditions that always returns true, is 'if' necessary? I can imagine it is a left over from hacking in the fast path. IMHO better to remove the if and comment the line below to retain the general pattern. Could easily be tacked on to an existing change e.g. if Vladimir is not fed up updating his basic types patch :-) http://cr.openjdk.java.net/~vlivanov/8037210 Paul. > I found one. > > diff -r 57c1da89ae1a > src/share/classes/java/lang/invoke/BoundMethodHandle.java > --- a/src/share/classes/java/lang/invoke/BoundMethodHandle.java Wed Apr 16 > 12:32:36 2014 -0700 > +++ b/src/share/classes/java/lang/invoke/BoundMethodHandle.java Mon Apr 21 > 09:50:29 2014 -0300 > @@ -66,8 +66,7 @@ > try { > switch (xtype) { > case 'L': > - if (true) return bindSingle(type, form, x); // Use known > fast path. > - return (BoundMethodHandle) > SpeciesData.EMPTY.extendWithType('L').constructor[0].invokeBasic(type, > form, x); > + return bindSingle(type, form, x); // Use known fast path. > case 'I': > return (BoundMethodHandle) > SpeciesData.EMPTY.extendWithType('I').constructor[0].invokeBasic(type, > form, ValueConversions.widenSubword(x)); > case 'J': > > > -- > Atenciosamente. > > Otávio Gonçalves de Santana > > blog: http://otaviosantana.blogspot.com.br/ > twitter: http://twitter.com/otaviojava > site: http://www.otaviojava.com.br > (11) 98255-3513

-- Atenciosamente.

Otávio Gonçalves de Santana

blog: http://otaviosantana.blogspot.com.br/ twitter: http://twitter.com/otaviojava site: http://www.otaviojava.com.br (11) 98255-3513



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