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the predicate, thus respecting the visual left-to-right top-down order
(see a45bd5981092).
This fixes CFGV.
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List.nth_error and List.hd_error were the only remaining places in
the whole stdlib to use type "Exc" instead of "option" directly.
So let's simplify things and use option everywhere. In particular,
during teaching sessions about lists, we won't have anymore to explain
the (lack of) difference between Exc,value,error and option,Some,None.
This might cause a few incompatibilities in proof scripts, if they
syntactically expect "value" or "error" to occur, but this should
hopefully be very rare and quite easy to fix.
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Oups, sorry, I should have compiled the stdlib in full. Not only
the ~polyprop wasn't propagated properly, but Matthieu made it be
false by default somewhere instead of true. Argl...
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It accepts three distinct flags:
- "Lax", which is the default one, sets the old behaviour, i.e. a non-imported
hint behaves the same as an imported one.
- "Warn" outputs a warning when a non-imported hint is used. Note that this is
an over-approximation, because a hint may be triggered by an eauto run that
will eventually fail and backtrack.
- "Strict" changes the behaviour of an unloaded hint to the one of the fail
tactic, allowing to emulate the hopefully future import-scoped hint mechanism.
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The ~polyprop argument wasn't propagated properly anymore,
leading the extraction to try to operate on situations it cannot
handle (yet). Cf Table.error_singleton_become_prop for more details.
Regression test added.
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In compiler mode, only vernac.ml knows the current file name.
Stm.process_error_hook moved from Vernacentries to Vernac to
be bale to properly enrich the exception with the current file
name (if any).
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We beta-iota normalize the type of the rewriting predicate to ensure that the
non-dependency in the arrow argument is meaningful. Otherwise, terms of the
form "forall x : A, (fun _ : A => P) x" generated by the retyping would confuse
the non-dependency heuristic.
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preserving compatibility of subst after #4214 being solved.
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TACTIC EXTEND (based on user-given name).
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Improving treatment of recursive equations compared to 8.4 (see test-suite).
Experimenting not to unfold local defs ever in subst.
(+ Slight simplification in checking reflexive equalities only once).
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after patch for #4214 on subst needed to be repeated (see
857e82b2ca0d1).
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The hypinfo cache was actually always set to None, so that there was no need
to try to preserve it if it was set to an actual value.
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The command [Redirect "filename" (...)] redirects all the output of
[(...)] to file "filename.out". This is useful for storing the results of
an [Eval compute], for redirecting the results of a large search, for
automatically generating traces of interesting developments, and so on.
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equalities in configurations like
x=y
x=z
===
P(x,y,z)
where it now produces
===
P(z,z,z)
In particular (equations are processed from most ancient to most recent).
Thanks to this, a "repeat subst" can just be a "subst" in List.v.
Incidentally: moved a nf_enter to enter in subst_one, since the latter
is normally called from other tactics having normalized evars.
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- Arithmetic operators and brackets are no longer recognized as bullets,
unless they follow a stop or start a line.
- Most vernacular commands are no longer highlighted when used inside
proof scripts.
- Coqdoc comments now take precedence over regular comments.
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Option -g has no impact on the code generated by GCC, so it is now
systematically added, since it is quite helpful when the VM segfaults
(e.g. bug #4203). Note that, even for a debug build, option -O1 is
preferred to -O0, since -O0 produces assembly code that is much too noisy
for debugging.
For non-debugging builds, -O2 was chosen rather than -O3, since it led to
a noticeably faster VM. I guess even recent GCC compilers still have a
hard time optimizing humongous functions such as the VM.
Here are the results on a simple benchmark: computing the factorial of a
large number with Z and BigZ. (Factorial of 2*6! for Z, of 7! for BigZ.)
For comparison purpose, the timings of native_compute are also provided.
Z BigZ
-O0 6.4 12.3
-O1 4.3 10.7
-O2 2.8 7.3
-O3 3.0 9.3
n_c 2.0 2.4
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Since error messages are ultimately passed to Format, which has its own
buffers for concatenating strings, using concatenation for preparing error
messages just doubles the workload and increases memory pressure.
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Followup of: f7b29094fe7cc13ea475447bd30d9a8b942f0fef . In particular, re-closes #3593.
As a side effect, fixes an undiscovered bug of the `eq_constr` tactic which didn't consider terms up to evar instantiation.
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Was made incorrect by 98a710caf5e907344329ee9e9f7b5fd87c50836f .
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Restores the intended behaviour from v8.3 and earlier.
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as glued.
Possible improvement: rotate using the left children in the glue function,
so that the iter function becomes mostly tail-recursive. Drawback: two
allocations per glue instead of a single one.
This commit makes the following command go from 7.9s to 3.0s:
coqtop <<< "Require Import BigZ ZBinary Reals OrdersEx. Time SearchPattern _." | tail -n 1
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