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+--- Thread: Bug Reports (/thread-5202.html)
Bug Reports - KiZ - 12-03-2004
Is it normal that ^2 is really slow?
..
because it is quite slow.
Bug Reports - v3cz0r - 12-03-2004
Power of, yeah, unless the left operand is a constant, that will be evaluated at compile-time.
You could just use "expression shl 1" if the left operand is an integer. FB doesn't do the "^ powerof2constant" to "shl" optimization yet.
Bug Reports - KiZ - 12-03-2004
Quote:"expression shl 1"
Thanks, but what doesnt appear to work....
Code:
4 shl 1Bug Reports - v3cz0r - 12-03-2004
Er, nm me.. value ^ 2 is equal to value * value, not value * 2 (same as shl 1).
Bug Reports - KiZ - 12-03-2004
O_o
So.... There isnt an asm type optimisation for "^"?
Bug Reports - v3cz0r - 12-03-2004
No, it must be implemented as a library, but expr ^ 2 could be optimized to expr * expr by the compiler, i will see what i can do.
Bug Reports - marzecTM - 12-03-2004
Quote:you know, loads of different cultures mixed, a "thumbs up!" can mean "hey, it looks good" in some countries or "hey babe, lets f*ck".
i hope for your health that this was not an invitation to have intercourse or something
whatever...
Bug Reports - v3cz0r - 12-03-2004
Hey, 3 smiles, you must be kidding now, right??
Heh..
Bug Reports - na_th_an - 12-06-2004
I'm trying to compile some old code, a bit spaghetti'ish, to really proof-test the compiler.
I've found that the compiler does not understand some QB stuff:
---
The compiler complains with, stopping at the comma:
Code:
NEXT x, yAlso with this line, stopping at the ":" (error: expected ","):
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Code:
LINE INPUT sn$: sn$ = LCASE$(sn$)I had to change it for:
Code:
LINE INPUT ">"; sn$: sn$ = LCASE$(sn$)to make it work. Plus LINE INPUT throws a "?" on screen, when it shouldn't. Not a single LINE INPUT variable$ worked in the code, it needs a string literal and a ";" before the variable to work.
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QB accepted:
Code:
CLOSEWhich closed every open file. FB doesn't, it complains about "expression expected".
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I also got something you should document (I dunno if you have done it already): If your BAS filename has a "-" the assembler fails with
Code:
junk at the end of line, first unrecognized character is `-'My BAS file was called OPA-OPA.BAS.
The ASM lines that are not working are those:
Code:
.globl fb_opa-opa_entry
.globl FB_OPA-OPA_ENTRY
fb_opa-opa_entry:
FB_OPA-OPA_ENTRY:Error messages:
Code:
opa-opa.asm: Assembler messages:
opa-opa.asm:10: Error: junk at end of line, first unrecognized character is `-'
opa-opa.asm:11: Error: junk at end of line, first unrecognized character is `-'
opa-opa.asm:12: Error: invalid character '_' in mnemonic
opa-opa.asm:13: Error: invalid character '_' in mnemonicI renamed the file to OPAOPA.BAS and it compiled without problems.
Awesome work! Those are just minor issues
and the code was like 120 Kb and written 6 years ago... Really UGLY code.
Bug Reports - Jofers - 12-06-2004
Dark prevail... try SAL and SAR insead, if rel's not trying to mislead me *GLARE*