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| author | Kaz Kylheku <kaz@kylheku.com> | 2018-03-20 20:35:40 -0700 |
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| committer | Kaz Kylheku <kaz@kylheku.com> | 2018-03-20 20:35:40 -0700 |
| commit | 5782eb24f96d01fba6d2a98a6b6e9dff04042bd7 (patch) | |
| tree | 763a769b3330399b36dffd92efd3b9423ace71d5 /debug.c | |
| parent | 996b7651b3a05ab9ae329467d7d9afdd696aa578 (diff) | |
| download | txr-5782eb24f96d01fba6d2a98a6b6e9dff04042bd7.tar.gz txr-5782eb24f96d01fba6d2a98a6b6e9dff04042bd7.tar.bz2 txr-5782eb24f96d01fba6d2a98a6b6e9dff04042bd7.zip | |
compiler: improve progn.
* share/txr/stdlib/compiler.tl (compiler comp-progn): If the
suggested output register is a variable, progn should not use
it for the discarded values of the leading forms, only for
the last form. Writes to the variable space of the display
are costly because in closures, the underlying vector of
a given level has to be passed to gc_mutated. We use a new
temp register for the discarded forms.
Diffstat (limited to 'debug.c')
0 files changed, 0 insertions, 0 deletions