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Groups > comp.lang.c > #400439
| From | BGB <cr88192@gmail.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: Resources for Amateur Compiler Writers |
| Date | 2026-07-26 18:02 -0500 |
| Organization | A noiseless patient Spider |
| Message-ID | <11463so$2p07d$1@dont-email.me> (permalink) |
| References | (13 earlier) <5CZ8S.240792$Xz_7.35251@fx06.ams4> <1141skl$1bej1$2@dont-email.me> <LHq9S.239269$OIh6.144784@fx13.ams4> <1145gvh$2ijto$1@dont-email.me> <1145u4s$2mqqi$1@dont-email.me> |
On 7/26/2026 4:27 PM, bart wrote:
> On 26/07/2026 18:39, BGB wrote:
>> On 7/26/2026 11:35 AM, Johann 'Myrkraverk' Oskarsson wrote:
>>> On 25/07/2026 4:37 PM, David Brown wrote:
>>>> On 25/07/2026 09:30, Johann 'Myrkraverk' Oskarsson wrote:
>>>>> On 25/07/2026 3:24 PM, Lawrence D’Oliveiro wrote:
>>>>>> On Sat, 25 Jul 2026 15:20:21 +0800, Johann 'Myrkraverk' Oskarsson
>>>>>> wrote:
>>>>>>
>>>>>>> The code is perfectly reasonable.
>>>>>>
>>>>>> If the code were “perfectly reasonable”, then there would be a
>>>>>> compiler bug. There isn’t.
>>>>>
>>>>> That's a simple matter of debate. I make the point it's a compiler
>>>>> bug. You don't, so you must be a member of the "big three" developer
>>>>> teams. Therefore all your opinions on my way of compiling C are
>>>>> completely invalid.
>>>>
>>>> It is not a matter of debate - the code is buggy. But it's not
>>>> entirely obvious that it is buggy - the folks who wrote the code
>>>> were pretty good and experienced C programmers, and /they/ didn't
>>>> notice the bug. Lawrence is not (AFAIK) a developer for the "big
>>>> three" compiler groups, but perhaps he works in support for a big IT
>>>> company - his answer was technically entirely correct, while being
>>>> entirely unhelpful.
>>>
>>> Don't worry about Lawrence. I just told him to buy CorelDRAW in comp.
>>> unix.shell. He's being very stubborn about being unhelpful. I'm
>>> enjoying teasing him about it. He'll learn eventually that I don't
>>> care at all about his opinions about anything.
>>>>
>>>>
>>>> If you look carefully at the code again, consider the final
>>>> iteration - when k is 15 (the test "k < 16" still passes) there is
>>>> the expression "dd = d[++k]". "k" is incremented to 16, and then we
>>>> read "d[16]" to assign to "dd". But "d[16]" does not exist - the
>>>> array "d" runs from "d[0]" to "d[15]". Attempting to read "d[16]"
>>>> is an out-of- bounds access, and that's UB. It's a bug.
>>>
>>> Right, I did not notice that; thank you. I'll add it as a test case
>>> for my compiler. I'm still working on preliminaries, so it might take
>>> a year or two, or a decade before I'll show how I treat this code.
>>>
>>
>>
>> Well, decided to see what my compiler would do...
>>
>> So, to recap:
>> int d[16];
>> int SATD (void) {
>> int satd = 0, dd, k;
>> for (dd=d[k=0]; k<16; dd=d[++k]) {
>> satd += (dd < 0 ? -dd : dd);
>> }
>> return satd;
>> }
>>
>> Gives:
>>
>> SATD:
>> // tst_random1.c:2 int SATD (void) {
>> ADD RD0, RQ0, RD13
>> // tst_random1.c:4 for (dd=d[k=0]; k<16; dd=d[++k]) {
>> ADD RD0, RQ0, RD12
>> MOV d, RQ11
>> MOV.L (RQ11, 0), RD10
>> .L00800000:
>> MOV 16, RD11
>> BRGE.L RD11, RD12, .L00800002
>> BRGE.L R0, RD10, .L00800003
>> RSUBS.L RD10, 0, RQ11
>> ADD RQ11, RQ0, RQ17
>> BSR .L00800004, R0
>> .L00800003:
>> ADD RD10, RQ0, RQ17
>> .L00800004:
>> ADDS.L RD13, RQ17, RD13
>> ADDS.L RD12, 1, RD12
>> MOV d, RQ16
>> MOV.L (RQ16, RD12), RD10
>> BSR .L00800000, R0
>> .L00800002:
>> // tst_random1.c:6 }
>> ADDS.L RD13, RQ0, RD10
>> .L00C000F9:
>> JSR R1, 0, R0
>>
>> Not exactly the way that is good to write ASM, just what my compiler
>> outputs when dumping ASM...
>>
>>
>> Decided not to really try to explain it, or what sort of ISA it is
>> aiming for.
>>
>> Not the cleverest compiler around either, but gets the job done...
>>
>
> Your code is a lot shorter than mine: 18 executable instrs versus 31 for
> mine which is for x64. Although 6 are to save/restore non-vol regs, and
> 2 for a stack-frame which doesn't appear to be needed.
>
> It does nothing at all about trying to detect possible out-of-bounds
> errors.
>
My compiler also doesn't notice the out-of-bounds.
But, yeah, the code in question is for XG3, but the output for RV64G is
kinda similar in this case. Neither is standard RV ASM syntax.
In this case, compiler skips prolog/epilog because the function is a
leaf function and everything fits into the available scratch registers.
Decided to leave out a longer description, but in this case XG3 uses a
modified variant/hybrid of the LP64 and LP64D ABI rules.
The ABI is very different from that used by XG1 and XG2 (and is a major
reason none of the XG1/XG2 ASM code works with XG3).
Can't give an X86-64 example because BGBCC doesn't target these. Hasn't
usually been a good reason to target a platform that is already well
served by the existing compilers.
Arguably, there are more efficient ways it could have handled the ?:,
but making ?: more efficient is a long-standing TODO.
Like, say, in theory it could have done:
SUBS.L R0, R10, R11 //SUBW X11, X0, X10
MAX R10, R11, R17
Or:
SUBS.L R0, R10, R11
SLT R10, 0, R0
CSELT R11, R10, R17
Or:
...
But, alas...
So, say, hand-optimizing it some:
>> SATD:
>> ADD RD0, RQ0, RD13 //LI X13, 0
>> ADD RD0, RQ0, RD12 //LI X12, 0
>> MOV d, RQ16 //LA X16, d / ~ AUIPC+ADDI
>> MOV.L (RQ16, 0), RD10 //LW X10, 0(X16)
>> .L00800000:
>> MOV 16, RD11 //ADDI X11, X0, 16
>> BRGE.L RD11, RD12, .L00800002 //BGE X12, X11, .L00800002
SUBS.L R0, R10, R11 //SUBW X11, X0, X10
MAX R10, R11, R17 //-
>> ADDS.L RD13, RQ17, RD13 //ADDW X13, X17, X17
>> ADDS.L RD12, 1, RD12 //ADDIW X12, X12, 1
>> MOV.L (RQ16, RD12), RD10 //-
>> BSR .L00800000, R0 //J .L00800000
>> .L00800002:
>> ADDS.L RD13, RQ0, RD10 //ADDW X10, X13, X0
>> JSR R1, 0, R0 //RTS
More drastic reorg could save a few more instrs, but, ...
And, would be longer with plain RV64G as RV64G lacks indexed addressing, so:
MOV.L (RQ16, RD12), RD10
Would need to become, say:
SHLD.L R12, 2, R5
ADD R5, R16, R5
MOV.L (R5), RD10
Or, in RV ASM notation:
SLLW X5, X12, 2
ADD X5, X5, X16
LW X10, 0(X5)
Well, in case anyone needed a translation key...
> gcc-O2 does it in 13, but -O3 is longer due to using SIMD and no looping.
>
> However I then tried it in my systems language (an equivalent program)
> and there it was only 22 instruction, shown below. More amenable
> language features can help! Here also there is no out-of-bounds error.
>
> SATD:: # (uses non-standard reg names: A/D = 32/64 bits)
> R.satd = A3
> R.dd = A4
> R.k = A5
> push D3
> push D4
> push D5
> sub Dsp, 16
> ;---------------
> xor R.satd, R.satd
> xor A0, A0
> mov R.k, A0
> movsx D1, A0
> lea D0, [d]
> mov R.dd, [D0 + D1*4]
> jmp L4
> L5:
> cmp R.dd, 0
> jge L6
> mov A0, R.dd
> neg A0
> jmp L7
> L6:
> mov A0, R.dd
> L7:
> add R.satd, A0
> inc R.k
> mov A0, R.k
> movsx D1, A0
> lea D0, [d]
> mov R.dd, [D0 + D1*4]
> L4:
> cmp R.k, 16
> jl L5
> mov A0, R.satd
> L1:
> ;---------------
> add Dsp, 16
> pop D5
> pop D4
> pop D3
> ret
>
>
> ---------------------------
> Version in my language (uses 64-bit ints and is 1-based):
> ---------------------------
> [16]int d
>
> func satd:int =
> int sum:=0
>
> for x in d do # iterates over values
> sum +:= abs(x)
> end
>
> sum
> end
>
> ---------------------------
> t.satd:
> R.sum = D3
> R.av_1 = D4
> R.x = D5
> push R.sum
> push R.av_1
> push R.x
> sub Dsp, 16 # this is again not needed! (Same backend)
> ;---------------
> xor R.sum, R.sum
> mov D0, 1
> mov R.av_1, D0
> L2:
> mov R.x, [R.av_1*8 + t.d-8]
> mov D0, R.x
> cmp D0, 0
> jge L5
> neg D0
> L5:
> add R.sum, D0
> inc R.av_1
> cmp R.av_1, 16
> jle L2
> mov D0, R.sum
> L1:
> ;---------------
> add Dsp, 16
> pop R.x
> pop R.av_1
> pop R.sum
> ret
>
OK.
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Re: Multics( Re: Prioritize Performance over Correctness) cross@spitfire.i.gajendra.net (Dan Cross) - 2026-07-28 22:20 +0000
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Re: Prioritize Performance over Correctness Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-08-16 07:59 -0700
Re: Prioritize Performance over Correctness Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-07-27 17:59 -0700
Re: Prioritize Performance over Correctness Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-07-28 15:42 +0800
Re: Prioritize Performance over Correctness Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-07-28 03:22 -0700
Re: Prioritize Performance over Correctness Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-07-28 19:21 +0800
Re: Prioritize Performance over Correctness bart <bc@freeuk.com> - 2026-07-28 13:02 +0100
Re: Prioritize Performance over Correctness Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-07-28 20:18 +0800
Re: Prioritize Performance over Correctness bart <bc@freeuk.com> - 2026-07-28 14:17 +0100
Re: Prioritize Performance over Correctness BGB <cr88192@gmail.com> - 2026-07-28 16:02 -0500
Re: Prioritize Performance over Correctness Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-07-29 16:45 +0800
Re: Prioritize Performance over Correctness bart <bc@freeuk.com> - 2026-07-29 12:03 +0100
Re: Prioritize Performance over Correctness Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-07-29 19:32 +0800
Re: Prioritize Performance over Correctness bart <bc@freeuk.com> - 2026-07-29 13:42 +0100
Re: Prioritize Performance over Correctness Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-07-29 20:49 +0800
Re: Prioritize Performance over Correctness bart <bc@freeuk.com> - 2026-07-29 16:01 +0100
Re: Prioritize Performance over Correctness Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-07-29 12:53 -0700
Re: Prioritize Performance over Correctness James Kuyper <jameskuyper@alumni.caltech.edu> - 2026-07-31 14:21 -0400
Re: Prioritize Performance over Correctness bart <bc@freeuk.com> - 2026-07-31 20:07 +0100
Re: Prioritize Performance over Correctness Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-07-31 13:00 -0700
Re: Prioritize Correctness Over Performance Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-08-01 02:34 +0000
Re: Prioritize Performance over Correctness Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-07-28 16:08 -0700
Re: Prioritize Performance over Correctness cross@spitfire.i.gajendra.net (Dan Cross) - 2026-07-28 23:28 +0000
Re: Prioritize Performance over Correctness cross@spitfire.i.gajendra.net (Dan Cross) - 2026-07-28 14:22 +0000
Re: Prioritize Performance over Correctness "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-07-28 13:51 -0700
Re: Prioritize Performance over Correctness James Kuyper <jameskuyper@alumni.caltech.edu> - 2026-07-28 20:32 -0400
Re: Prioritize Performance over Correctness cross@spitfire.i.gajendra.net (Dan Cross) - 2026-07-28 14:20 +0000
Re: Prioritize Performance over Correctness "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-07-28 13:54 -0700
Re: Prioritize Performance over Correctness Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-07-29 05:00 +0800
Re: Prioritize Performance over Correctness James Kuyper <jameskuyper@alumni.caltech.edu> - 2026-07-28 20:25 -0400
Re: Prioritize Performance over Correctness "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-07-29 14:55 -0700
Re: Prioritize Performance over Correctness James Kuyper <jameskuyper@alumni.caltech.edu> - 2026-07-28 20:31 -0400
Re: Prioritize Performance over Correctness Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-07-28 21:26 -0700
Re: Prioritize Performance over Correctness "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-07-29 14:57 -0700
Re: Prioritize Performance over Correctness Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-07-29 15:33 -0700
Re: Prioritize Performance over Correctness "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-07-29 16:22 -0700
Re: Prioritize Performance over Correctness Richard Harnden <richard.nospam@gmail.invalid> - 2026-07-30 07:40 +0100
Re: Prioritize Correctness over Performance Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-07-30 06:48 +0000
Re: Prioritize Correctness over Performance James Kuyper <jameskuyper@alumni.caltech.edu> - 2026-07-30 06:50 -0400
Re: Prioritize Correctness over Performance Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-07-30 03:54 -0700
Re: Prioritize Correctness over Performance James Kuyper <jameskuyper@alumni.caltech.edu> - 2026-07-30 08:24 -0400
Re: Prioritize Correctness over Performance Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-07-30 14:40 -0700
Re: Prioritize Correctness over Performance "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-07-30 19:39 -0700
Re: Prioritize Performance over Correctness James Kuyper <jameskuyper@alumni.caltech.edu> - 2026-07-30 06:44 -0400
Re: Prioritize Performance over Correctness Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-07-30 21:00 +0000
Re: Prioritize Performance over Correctness Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-07-30 14:38 -0700
Re: Prioritize Performance over Correctness Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-07-30 21:53 +0000
Re: Prioritize Performance over Correctness Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-07-30 15:10 -0700
Re: Prioritize Performance over Correctness "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-07-30 19:40 -0700
Re: Prioritize Performance over Correctness cross@spitfire.i.gajendra.net (Dan Cross) - 2026-07-31 02:43 +0000
Re: Prioritize Performance over Correctness "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-07-30 19:44 -0700
Re: Prioritize Performance over Correctness "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-07-30 19:58 -0700
Re: Prioritize Performance over Correctness "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-08-01 01:25 -0700
Re: Prioritize Performance over Correctness David Brown <david.brown@hesbynett.no> - 2026-08-02 23:14 +0200
Re: Prioritize Performance over Correctness "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-08-02 14:37 -0700
Re: Prioritize Performance over Correctness Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-08-02 22:51 +0000
Re: Prioritize Performance over Correctness Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-08-02 16:43 -0700
Re: Prioritize Performance over Correctness "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-08-03 12:03 -0700
Re: Prioritize Correctness Over Performance Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-08-03 23:49 +0000
Re: Prioritize Correctness Over Performance "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-08-03 19:35 -0700
MS-DOS memory models (was: Re: Prioritize Performance over Correctness) Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-08-03 08:08 +0800
Re: Prioritize Performance over Correctness David Brown <david.brown@hesbynett.no> - 2026-08-03 10:16 +0200
Re: Prioritize Performance over Correctness Richard Harnden <richard.nospam@gmail.invalid> - 2026-08-03 10:41 +0100
Re: Prioritize Performance over Correctness David Brown <david.brown@hesbynett.no> - 2026-08-03 12:28 +0200
Malicious Computer Architecture (was: Re: Prioritize Performance over Correctness) Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-08-03 19:23 +0800
Re: Malicious Computer Architecture David Brown <david.brown@hesbynett.no> - 2026-08-03 14:01 +0200
Re: Malicious Computer Architecture Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-08-03 22:52 +0800
Re: Malicious Computer Architecture David Brown <david.brown@hesbynett.no> - 2026-08-03 19:41 +0200
Re: Malicious Computer Architecture "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-08-03 13:13 -0700
Re: Malicious Computer Architecture "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-08-03 13:10 -0700
Re: Malicious Computer Architecture (was: Re: Prioritize Performance over Correctness) scott@slp53.sl.home (Scott Lurndal) - 2026-08-03 14:29 +0000
Johnny Depp prevention [Windows 11 etc...] (Was: Malicious Computer Architecture) Mild Shock <janburse@fastmail.fm> - 2026-08-03 18:10 +0200
But how can you deploy. when its ROM? (Was: Johnny Depp prevention [Windows 11 etc...]) Mild Shock <janburse@fastmail.fm> - 2026-08-03 18:15 +0200
GPU Elasticity: Collective Communications Libraries (Was: But how can you deploy. when its ROM?) Mild Shock <janburse@fastmail.fm> - 2026-08-07 14:37 +0200
What are Flits and Phits? [Network on a Chip] (Re: GPU Elasticity: Collective Communications Libraries) Mild Shock <janburse@fastmail.fm> - 2026-08-07 18:07 +0200
Cristallina: Thank you for the Beam (Re: What are Flits and Phits? [Network on a Chip]) Mild Shock <janburse@fastmail.fm> - 2026-08-09 21:22 +0200
Loderunner Enemy AI better than SWI-Prolog? [Prolog Education Group] Mild Shock <janburse@fastmail.fm> - 2026-08-18 16:26 +0200
How to shoot yourself in the foot (Re: Loderunner Enemy AI better than SWI-Prolog? [Prolog Education Group] Mild Shock <janburse@fastmail.fm> - 2026-08-18 16:50 +0200
Re: How to shoot yourself in the foot (Re: Loderunner Enemy AI better than SWI-Prolog? [Prolog Education Group] Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-08-19 03:24 +0800
Re: Loderunner Enemy AI better than SWI-Prolog? [Prolog Education Group] Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-08-19 03:21 +0800
Re: Loderunner Enemy AI better than SWI-Prolog? [Prolog Education Group] Aidan Kehoe <kehoea@parhasard.net> - 2026-08-18 21:13 +0100
Re: Loderunner Enemy AI better than SWI-Prolog? [Prolog Education Group] Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-08-18 22:49 +0000
Re: Loderunner Enemy AI better than SWI-Prolog? [Prolog Education Group] Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-08-19 08:32 +0800
Re: Loderunner Enemy AI better than SWI-Prolog? [Prolog Education Group] Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-08-19 08:27 +0800
The Mac Neo is a Budget Monster [GPU Channels] (Re: What are Flits and Phits? [Network on a Chip]) Mild Shock <janburse@fastmail.fm> - 2026-08-11 16:27 +0200
The luminaries of duct-tape engineering [Sweeney and Torvald] (Was: The Mac Neo is a Budget Monster [GPU Channels]) Mild Shock <janburse@fastmail.fm> - 2026-08-11 16:51 +0200
Re: Malicious Computer Architecture Aidan Kehoe <kehoea@parhasard.net> - 2026-08-03 19:51 +0100
Re: Malicious Computer Architecture Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-08-05 00:22 +0800
Re: Malicious Computer Architecture Richard Harnden <richard.nospam@gmail.invalid> - 2026-08-04 19:10 +0100
Re: Malicious Computer Architecture Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-08-05 03:21 +0800
Re: Malicious Computer Architecture Kaz Kylheku <046-301-5902@kylheku.com> - 2026-08-06 21:55 +0000
Re: Malicious Computer Architecture Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-08-07 06:31 +0800
Re: Malicious Computer Architecture Aidan Kehoe <kehoea@parhasard.net> - 2026-08-06 23:01 +0100
A Case for Impurity: The Applied Pi Calculus (Re: Malicious Computer Architecture) Mild Shock <janburse@fastmail.fm> - 2026-08-04 14:58 +0200
The Sandcastle of Paul Taraus Interactors (Re: A Case for Impurity: The Applied Pi Calculus) Mild Shock <janburse@fastmail.fm> - 2026-08-04 15:10 +0200
Re: Prioritize Performance over Correctness Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-08-03 05:34 -0700
Re: Prioritize Performance over Correctness "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-08-03 13:04 -0700
Re: Prioritize Correctness Over Performance Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-08-04 00:52 +0000
Re: Prioritize Correctness Over Performance scott@slp53.sl.home (Scott Lurndal) - 2026-08-04 14:22 +0000
Re: Prioritize Performance over Correctness Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-08-03 05:25 -0700
Re: Prioritize Performance over Correctness David Brown <david.brown@hesbynett.no> - 2026-08-03 15:10 +0200
Re: Prioritize Performance over Correctness "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-08-03 13:16 -0700
Re: Prioritize Performance over Correctness James Kuyper <jameskuyper@alumni.caltech.edu> - 2026-08-03 20:29 -0400
Re: Prioritize Performance over Correctness Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-08-03 17:55 -0700
Re: Prioritize Performance over Correctness David Brown <david.brown@hesbynett.no> - 2026-08-04 09:12 +0200
Re: Prioritize Performance over Correctness Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-08-02 19:01 -0700
Re: Prioritize Performance over Correctness cross@spitfire.i.gajendra.net (Dan Cross) - 2026-08-03 19:59 +0000
Re: Prioritize Performance over Correctness Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-07-30 03:50 -0700
Re: Prioritize Performance over Correctness "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-07-29 15:09 -0700
Re: Prioritize Performance over Correctness Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-07-28 08:14 +0800
Re: Prioritize Performance over Correctness Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-07-29 05:54 +0800
Re: Prioritize Performance over Correctness steveo@panix.com (Steven M. O'Neill) - 2026-07-31 20:34 +0000
Re: Prioritize Performance over Correctness James Kuyper <jameskuyper@alumni.caltech.edu> - 2026-07-28 19:40 -0400
Re: Prioritize Performance over Correctness BGB <cr88192@gmail.com> - 2026-07-27 15:36 -0500
Re: Prioritize Performance over Correctness Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-07-29 04:56 +0800
Re: Prioritize Performance over Correctness Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-07-24 14:47 +0200
Re: Prioritize Performance over Correctness David Brown <david.brown@hesbynett.no> - 2026-07-24 16:27 +0200
Resources for Amateur Compiler Writers Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-07-25 00:52 +0800
Re: Resources for Amateur Compiler Writers bart <bc@freeuk.com> - 2026-07-24 23:08 +0100
Re: Resources for Amateur Compiler Writers BGB <cr88192@gmail.com> - 2026-07-24 18:50 -0500
Re: Resources for Amateur Compiler Writers Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-07-25 01:54 +0000
Re: Resources for Amateur Compiler Writers Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-07-25 15:20 +0800
Re: Resources for Amateur Compiler Writers Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-07-25 07:24 +0000
Re: Resources for Amateur Compiler Writers Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-07-25 15:30 +0800
Re: Resources for Amateur Compiler Writers David Brown <david.brown@hesbynett.no> - 2026-07-25 10:37 +0200
Re: Resources for Amateur Compiler Writers Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-07-27 00:35 +0800
Re: Resources for Amateur Compiler Writers BGB <cr88192@gmail.com> - 2026-07-26 12:39 -0500
Re: Resources for Amateur Compiler Writers bart <bc@freeuk.com> - 2026-07-26 22:27 +0100
Re: Resources for Amateur Compiler Writers BGB <cr88192@gmail.com> - 2026-07-26 18:02 -0500
Re: Resources for Amateur Compiler Writers Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-07-25 22:32 +0000
Re: Resources for Amateur Compiler Writers Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-07-25 15:58 -0700
Re: Resources for Amateur Compiler Writers David Brown <david.brown@hesbynett.no> - 2026-07-25 10:23 +0200
Re: Resources for Amateur Compiler Writers Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-07-24 16:29 -0700
Re: Resources for Amateur Compiler Writers Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-07-25 15:25 +0800
Re: Resources for Amateur Compiler Writers Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-07-25 15:33 -0700
Re: Resources for Amateur Compiler Writers Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-07-27 00:38 +0800
Re: Resources for Amateur Compiler Writers Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-07-26 17:06 -0700
Re: Resources for Amateur Compiler Writers Cóilín Nioclásín Glostéir <thanks-to@Taf.com> - 2026-07-26 17:03 +0000
Re: Prioritize Performance over Correctness BGB <cr88192@gmail.com> - 2026-07-24 16:50 -0500
Re: Prioritize Performance over Correctness Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-07-24 16:13 -0700
Re: Prioritize Performance over Correctness BGB <cr88192@gmail.com> - 2026-07-26 15:26 -0500
Re: Prioritize Performance over Correctness Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-07-23 11:18 +0200
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