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2191 Commits

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whitequark cb3b811fd7 compiler: maintain both the IR and iodelay forms of delay expressions. 
After this commit, the delay instruction (again) does not generate
any LLVM IR: all heavy lifting is relegated to the delay and delay_mu
intrinsics. When the interleave transform needs to adjust the global
timeline, it synthesizes a delay_mu intrinsnic. This way,
the interleave transformation becomes composable, as the input and
the output IR invariants are the same.

Also, code generation is adjusted so that a basic block is split off
not only after a delay call, but also before one; otherwise, e.g.,
code immediately at the beginning of a `with parallel:` branch
would have no choice but to execute after another branch has already
advanced the timeline.

This takes care of issue #1 described in 50e7b44 and is a step
to solving issue #2.
 2015-11-21 03:22:47 +08:00
whitequark 50e7b44d04 compiler: actually implement interleaving correctly (calls are still broken). 
The previous implementation was completely wrong: it always advanced
the global timeline by the same amount as the non-interleaved basic
block did.

The new implementation only advances the global timeline by
the difference between its current time and the virtual time of
the branch, which requires it to adjust the delay instructions.

Previously, the delay expression was present in the IR twice: once
as the iodelay.Expr transformation-visible form, and once as regular
IR instructions, with the latter form being passed to the delay_mu
builtin and advancing the runtime timeline.

As a result of this change, this strategy is no longer valid:
we can meaningfully mutate the iodelay.Expr form but not the IR
instruction form. Thus, IR instructions are no longer generated for
delay expressions, and the LLVM lowering pass now has to lower
the iodelay.Expr objects as well.

This works OK for flat `with parallel:` expressions, but breaks down
outside of `with parallel:` or when calls are present. The reasons
it breaks down are as follows:

  * Outside of `with parallel:`, delay() and delay_mu() must accept
    any expression, but iodelay.Expr's are not nearly expressive
    enough. So, the IR instruction form must actually be kept as well.

  * A delay instruction is currently inserted after a call to
    a user-defined function; this delay instruction introduces
    a point where basic block reordering is possible as well as
    provides delay information. However, the callee knows nothing
    about the context in which it is called, which means that
    the runtime timeline is advanced twice. So, a new terminator
    instruction must be added that combines the properties of delay
    and call instructions (and another for delay and invoke as well).
 2015-11-21 00:02:47 +08:00
whitequark 73c358a59a Reformat. 2015-11-20 23:33:06 +08:00
whitequark cb9e7d15bf compiler.iodelay: subtraction certainly shouldn't be commutative. 2015-11-20 22:15:03 +08:00
whitequark cc623c13b4 Reformat. 2015-11-20 21:45:34 +08:00
whitequark d0f86e05d0 transforms.interleaver: add safety check. 2015-11-20 17:27:04 +08:00
whitequark 88b7990714 transforms.iodelay_estimator: fail statements with indeterminate delay inside `with parallel`. 2015-11-20 17:10:25 +08:00
whitequark 28fa68730a Merge branch 'master' into new-py2llvm 2015-11-20 15:55:29 +08:00
Sebastien Bourdeauducq 9826b19c9a gui/scan: adapt layout to show more decimals 2015-11-20 11:20:15 +08:00
whitequark 00ec574d73 transforms.interleaver: implement (without inlining). 2015-11-20 00:03:26 +08:00
whitequark 025bfbe746 transforms.llvm_ir_generator: accept delay instructions. 
The delay instruction is just like a branch (discontinuity
in instruction flow), but it also carries metadata: how long
did the execution of its basic block take. This metadata only
matters during inlining and interleaving, so we treat it here
as a mere branch.
 2015-11-19 23:55:52 +08:00
whitequark 9639a831bc transforms.artiq_ir_generator: correctly emit IfExpT with control flow. 
This can happen with nested if expressions, as well as if
the if expression includes delays.
 2015-11-19 23:44:39 +08:00
whitequark b9bb5fba6a lit-test: fix iodelay/class test (broken in 506725f). 2015-11-19 23:28:50 +08:00
whitequark a04d0f8fbd lit-test: fix inferencer/error_class test (broken in b0c6b70). 2015-11-19 23:28:00 +08:00
whitequark 2543daa5cf transforms.artiq_ir_generator: don't emit delay instruction for zero delay. 
Call nodes with iodelay=Const(0) can be generated outside of
`with parallel:`, where Interleaver won't and LLVMIRGenerator can't
lower them.
 2015-11-19 23:24:46 +08:00
whitequark 58db347e01 transforms.iodelay_estimator: fix uninitialized access. 2015-11-19 23:23:39 +08:00
Sebastien Bourdeauducq 108aed569e gui/models/DictSyncTreeSepModel: add getitem 2015-11-17 22:53:11 +08:00
Sebastien Bourdeauducq 537fa2287b gui/models/DictSyncTreeSepModel: fix item row update 2015-11-17 22:39:46 +08:00
Sebastien Bourdeauducq 7bebc52959 gui/explorer: reduce impact of Qt selection display bug 2015-11-17 22:38:01 +08:00
Sebastien Bourdeauducq 250ab6b489 gui/explorer: tree view 2015-11-17 19:46:26 +08:00
Sebastien Bourdeauducq 9c5db288a5 gui/datasets: tree view 2015-11-17 19:46:17 +08:00
Sebastien Bourdeauducq 107d8f0ffa gui/models: add DictSyncTreeSepModel 2015-11-17 19:45:28 +08:00
whitequark 48a2bb10d5 transforms.interleaver: add boilerplate. 2015-11-17 05:22:20 +03:00
whitequark de9d7eb2e4 compiler: add `delay` IR instruction. 2015-11-17 05:16:43 +03:00
whitequark 956d2afcb2 compiler.iodelay: fold Max further. 2015-11-17 03:06:07 +03:00
whitequark 7d2fca291d compiler.iodelay: add missing import. 2015-11-17 01:30:19 +03:00
whitequark e619154c81 transforms.iodelay_estimator: fix handling of `with sequential`. 2015-11-17 01:22:48 +03:00
whitequark 506725f78a transforms.iodelay_estimator: fix handling of methods. 2015-11-17 01:19:22 +03:00
whitequark b0c6b70971 transforms.asttyped_rewriter: fix class redefinition diagnostic. 2015-11-17 01:17:25 +03:00
whitequark 80f0bfe0ad lit-test: add test for iodelay order invariance. 2015-11-17 01:04:20 +03:00
whitequark 3fb12b74d6 lit-test: update to follow IR serialization changes. 2015-11-17 01:04:08 +03:00
whitequark 9e0a5b9404 transforms.iodelay_estimator: skip statements, not modules on _UnknownDelay. 2015-11-17 01:00:10 +03:00
whitequark 44d0a35409 transforms.iodelay_estimator: actually iterate to fixpoint. 2015-11-17 00:59:40 +03:00
whitequark 10f82ff2c8 transforms.iodelay_estimator: do not unify indeterminate delays. 2015-11-17 00:59:09 +03:00
whitequark 841e01a8bb compiler.iodelay: fix typo in Var.__eq__. 2015-11-17 00:53:12 +03:00
whitequark a2d73c8b05 compiler.types: dump type variable iodelay explicitly. 2015-11-17 00:51:56 +03:00
whitequark e67705dc27 compiler.iodelay: fix typo in BinOp.__eq__. 2015-11-17 00:51:37 +03:00
whitequark 629aacec09 compiler.iodelay: add forgotten Conv.__eq__. 2015-11-17 00:51:22 +03:00
whitequark fd46690cf5 compiler: make IR dumps vastly more readable. 2015-11-17 00:23:34 +03:00
whitequark eefa9e2ea6 transforms.inferencer: fix typo. 2015-11-17 00:02:15 +03:00
Sebastien Bourdeauducq 723ef71a87 master/repository: fix experiment name conflict handling 2015-11-16 22:46:40 +08:00
whitequark c8cfa7c7bd compiler: give suggestions in diagnostics for unbound variable. 
This uses the Jaro-Winkler edit distance, which seemed like the best
fit for identifiers, even though it is intended for people's names.
 2015-11-15 23:09:40 +03:00
Sebastien Bourdeauducq d32c2c091f master: scan subdirectories in repos 2015-11-14 00:06:52 +08:00
Sebastien Bourdeauducq 96ddf73a8b setup.py: update dependency_links 2015-11-12 22:00:51 +08:00
Sebastien Bourdeauducq 3cbd7c4c13 gui: support multiple log docks 2015-11-12 01:13:57 +08:00
Sebastien Bourdeauducq fa89e165b2 gui/datasets: fix display update 2015-11-11 17:09:35 +08:00
Sebastien Bourdeauducq 11fbea4161 sync_struct/Subscriber: support lists of notify callbacks 2015-11-11 17:09:07 +08:00
Sebastien Bourdeauducq 62c0eb85b1 gui/console: use network clients directly 2015-11-11 17:02:51 +08:00
Sebastien Bourdeauducq 4166f4e928 frontend: use atexit_register_coroutine in other tools 2015-11-11 16:22:12 +08:00
Sebastien Bourdeauducq 69f5e378fe sync_struct/Subscriber: remove unused multi-target functionality 2015-11-11 12:44:20 +08:00