Re: inlining inefficiencies

[Gabriel Dos Reis <gdr at codesourcery dot com>]

Dan Nicolaescu <dann@godzilla.ICS.UCI.EDU> writes:

| Gabriel Dos Reis <gdr@codesourcery.com> writes:
| 
|   > Dan Nicolaescu <dann@godzilla.ICS.UCI.EDU> writes:
|   > 
|   > | There are some problems with inlining as shown by the code below 
|   > | (derived from oopack)
|   > | 
|   > | class Complex_d {
|   > | public:
|   > |   double re, im;
|   > |   Complex_d (double r, double i) : re(r), im(i) {}
|   > |   Complex_d () {}
|   > | };
|   > 
|   > Incidentely, I would like to mention that the compiler seems to have
|   > some unexplained difficulty to optimize similar constructs with
|   > double __complex__ -- that used to be mentioned in the past, and I
|   > beleive the situation doesn't improve :-(
| 
| If the difficulties you mention are related to aliasing, and you have
| some testcases, please send them to me. 

I did some preliminary analysis here:

	http://gcc.gnu.org/ml/libstdc++/2001-11/msg00038.html

I'm suspecting some aliasing issues, but I can't tell for sure.

-- Gaby