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Groups > comp.lang.forth > #19266
| From | mhx@iae.nl (Marcel Hendrix) |
|---|---|
| Subject | Re: About stack access profundity |
| Newsgroups | comp.lang.forth |
| Message-ID | <63591406028434@frunobulax.edu> (permalink) |
| Date | 2013-01-29 21:44 +0200 |
| References | <1950087.W2tCE9ddpV@sunwukong.fritz.box> |
| Organization | Wanadoo |
Bernd Paysan <bernd.paysan@gmx.de> writes Re: About stack access profundity > Anton Ertl wrote: >> I would have to look at the concrete code (before and after the >> change) to give a proper comment on that. But if all that happens is >> that you replace a "5 PICK" (which should produce a register reference >> or, if there are not enough registers, a memory reference to the >> memory part of the stack) with something like "DUP .X @", "OVER .X @", >> "R@ .X @" (which should produce at least one memory reference, for the >> @), the use of structures should not be shorter and faster. > Not convinced. VFX doesn't do that too well: [..] iForth64 ... FORTH> begin-structure point ok [3]FORTH> field: .x ok [3]FORTH> field: .y ok [3]FORTH> end-structure ok FORTH> ok FORTH> : test ( addr -- ) >r r@ .x @ r@ .y @ 2dup + r@ .x ! - r> .y ! ; ok FORTH> see test Flags: TOKENIZE, ANSI : test >R R@ .x @ R@ .y @ 2DUP + R@ .x ! - R> .y ! ; ok FORTH> ' test idis $01404300 : [trashed] $0140430A pop rbx $0140430B mov rdi, [rbx] qword $0140430E add rdi, [rbx 8 +] qword $01404312 mov rax, [rbx] qword $01404315 mov rdx, [rbx 8 +] qword $01404319 mov [rbx] qword, rdi $0140431C sub rax, rdx $0140431F mov [rbx 8 +] qword, rax $01404323 ; FORTH> create ape 2 cells allot ok FORTH> : tt ape test ; ok FORTH> see tt Flags: TOKENIZE, ANSI : tt ape test ; ok FORTH> ' tt idis $01404BC0 : [trashed] $01404BCA mov rbx, $01404780 qword-offset $01404BD1 add rbx, $01404788 qword-offset $01404BD8 mov rdi, $01404780 qword-offset $01404BDF mov rax, $01404788 qword-offset $01404BE6 mov $01404780 qword-offset, rbx $01404BED sub rdi, rax $01404BF0 mov $01404788 qword-offset, rdi $01404BF7 ; -marcel
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About stack access profundity Pablo Hugo Reda <pabloreda@gmail.com> - 2013-01-27 12:11 -0800
Re: About stack access profundity humptydumpty <ouatubi@gmail.com> - 2013-01-28 00:59 -0800
Re: About stack access profundity Pablo Hugo Reda <pabloreda@gmail.com> - 2013-01-28 07:17 -0800
Re: About stack access profundity Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-01-28 03:10 -0600
Re: About stack access profundity Pablo Hugo Reda <pabloreda@gmail.com> - 2013-01-28 07:23 -0800
Re: About stack access profundity Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-01-28 10:46 -0600
Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-29 08:20 +0000
Re: About stack access profundity Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-01-29 03:25 -0600
Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-29 09:47 +0000
Re: About stack access profundity Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-01-29 04:08 -0600
Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-29 15:21 +0000
Re: About stack access profundity Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-01-29 09:57 -0600
Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-29 17:01 +0000
Re: About stack access profundity Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-01-29 12:22 -0600
Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-30 17:40 +0000
Re: About stack access profundity Paul Rubin <no.email@nospam.invalid> - 2013-01-30 11:49 -0800
Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-02-04 16:39 +0000
Re: About stack access profundity Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-01-30 16:32 -0600
Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-31 16:02 +0000
Re: About stack access profundity stephenXXX@mpeforth.com (Stephen Pelc) - 2013-01-29 17:06 +0000
Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-29 17:58 +0000
Re: About stack access profundity Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-01-29 12:29 -0600
Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-30 17:22 +0000
Re: About stack access profundity Bernd Paysan <bernd.paysan@gmx.de> - 2013-01-29 20:17 +0100
Re: About stack access profundity mhx@iae.nl (Marcel Hendrix) - 2013-01-29 21:44 +0200
Re: About stack access profundity Bernd Paysan <bernd.paysan@gmx.de> - 2013-01-29 22:14 +0100
Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-30 16:29 +0000
Re: About stack access profundity Pablo Hugo Reda <pabloreda@gmail.com> - 2013-01-30 09:58 -0800
Re: About stack access profundity stephenXXX@mpeforth.com (Stephen Pelc) - 2013-01-31 12:32 +0000
Re: About stack access profundity Bernd Paysan <bernd.paysan@gmx.de> - 2013-01-31 15:37 +0100
Re: About stack access profundity Mark Wills <forthfreak@gmail.com> - 2013-01-29 23:12 -0800
Re: About stack access profundity stephenXXX@mpeforth.com (Stephen Pelc) - 2013-01-29 10:08 +0000
Re: About stack access profundity Pablo Hugo Reda <pabloreda@gmail.com> - 2013-01-29 07:10 -0800
Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-29 15:17 +0000
Re: About stack access profundity Mark Wills <forthfreak@gmail.com> - 2013-01-29 00:57 -0800
Re: About stack access profundity Mark Wills <forthfreak@gmail.com> - 2013-01-28 01:56 -0800
Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-29 15:30 +0000
Re: About stack access profundity Pablo Hugo Reda <pabloreda@gmail.com> - 2013-01-29 09:06 -0800
Re: About stack access profundity Pablo Hugo Reda <pabloreda@gmail.com> - 2013-02-03 06:22 -0800
Re: About stack access profundity Mark Wills <forthfreak@gmail.com> - 2013-02-03 07:25 -0800
Re: About stack access profundity Pablo Hugo Reda <pabloreda@gmail.com> - 2013-02-03 15:51 -0800
Re: About stack access profundity Coos Haak <chforth@hccnet.nl> - 2013-02-04 01:12 +0100
Re: About stack access profundity Mark Wills <forthfreak@gmail.com> - 2013-02-03 23:10 -0800
Re: About stack access profundity Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-02-04 03:26 -0600
Re: About stack access profundity humptydumpty <ouatubi@gmail.com> - 2013-02-03 11:26 -0800
Re: About stack access profundity Pablo Hugo Reda <pabloreda@gmail.com> - 2013-02-03 15:49 -0800
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