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Revision c3861f5c7371fea2fc5d20404a7f77c927bbd61b authored by Shuhei Kadowaki on 14 August 2021, 12:49:21 UTC, committed by Shuhei Kadowaki on 23 August 2021, 15:09:13 UTC 
`AbstractInterpreter`: generalize `force_const_prop` interface
 
Built on top of #41882, this PR sorts out the constant-prop' interface
yet more, particularly generalizes `force_const_prop` to `const_prop_config`
so that it can turn on and off each heuristic.

The main motivation here is, in #41882, we want to force const-prop' on
`setproperty` even when its return type is already `Const` for the sake
of succeeding inlining, by skipping all the `const_prop_xxx_heuristic` checks.
But I still found we want to apply `const_prop_entry_heuristic` to
`getproperty`, because if we already know very accurate result for a
`getproperty` call, usually there is really no motivation for constant-prop', e.g.:
```julia
struct FZero end
Base.getproperty(::FZero, ::Symbol) = 0.0
getproperty(FZero(), :val) # const-prop' doesn't need to happen here
```

Now `force_const_prop(...) -> force::Bool` is refactored to
`const_prop_config(...) -> config::UInt8`, which can turn on and off
each heuristic based on the value of `config`.

I also included another refactoring that inlines `const_prop_rettype_heuristic`
into `const_prop_argument_heuristic`, because they really seem tightly coupled.
1 parent e1e4986
Raw File
uv_constants.h 
// This file is a part of Julia. License is MIT: https://julialang.org/license

#include "uv.h"
#if EDOM > 0
# define UV__ERR(x) (-(x))
#else
# define UV__ERR(x) (x)
#endif
#define XX(uc,lc) :UV_##uc,
#define YY(uc,mc) (:UV_##uc,UV__##uc),

const uv_handle_types = [UV_HANDLE_TYPE_MAP(XX) :UV_FILE]
const uv_req_types = [UV_REQ_TYPE_MAP(XX)]
const uv_err_vals = [UV_ERRNO_MAP(YY)]
let
    handles = [:UV_UNKNOWN_HANDLE, uv_handle_types..., :UV_HANDLE_TYPE_MAX]
    reqs = [:UV_UNKNOWN_REQ, uv_req_types..., :UV_REQ_TYPE_PRIVATE, :UV_REQ_TYPE_MAX]
    for i in 1:length(handles)
        @eval const $(handles[i]) = $(i - 1)
    end
    for i in 1:length(reqs)
        @eval const $(reqs[i]) = $(i - 1)
    end
    for (v, val) in uv_err_vals
        @eval const $v = $val
    end
end
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