diff options
| author | Kaz Kylheku <kaz@kylheku.com> | 2021-02-18 20:04:03 -0800 |
|---|---|---|
| committer | Kaz Kylheku <kaz@kylheku.com> | 2021-02-18 20:04:03 -0800 |
| commit | f42715f03ed773d375d88717c65605b020cfc467 (patch) | |
| tree | 32d602e91a4bcdd439a5d2a41307b8f4a1ed80c2 /arith.c | |
| parent | f2441b0b93c9ed2c4d0ca46c89f0677fc60a5a85 (diff) | |
| download | txr-f42715f03ed773d375d88717c65605b020cfc467.tar.gz txr-f42715f03ed773d375d88717c65605b020cfc467.tar.bz2 txr-f42715f03ed773d375d88717c65605b020cfc467.zip | |
compiler: start of constant-folding implementation.
Introducing folding of certain expressions that can be
evaluated at compile time, with some special handling for
common arithmetic functions, in which we can collapse
consecutive arguments that are constant integer expressions.
* share/txr/stdlib/compiler.tl (%const-foldable-funs%): New
global variable.
(compiler compile): Send multiplication and division through
new methods that that treat integer arguments.
(compiler comp-arith-form, compiler comp-neg-arith-form): New
methods.
(comp-fun-form): Apply constant folding to a proper function
call whose operator is listed in %const-foldable-funs%.
(reduce-constant): New function.
Diffstat (limited to 'arith.c')
0 files changed, 0 insertions, 0 deletions