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| author | Kaz Kylheku <kaz@kylheku.com> | 2023-08-04 06:59:02 -0700 |
|---|---|---|
| committer | Kaz Kylheku <kaz@kylheku.com> | 2023-08-04 06:59:02 -0700 |
| commit | ce4b9b23a2faf3a7fa5dff032b934b3ded7d39c7 (patch) | |
| tree | 787a4288566f31427402a2204689a09e4b4b8b93 /tests/009 | |
| parent | 22ad3ca92d11b413d76c8cf7d64e3d7cca9b3c85 (diff) | |
| download | txr-ce4b9b23a2faf3a7fa5dff032b934b3ded7d39c7.tar.gz txr-ce4b9b23a2faf3a7fa5dff032b934b3ded7d39c7.tar.bz2 txr-ce4b9b23a2faf3a7fa5dff032b934b3ded7d39c7.zip | |
compiler: bug: constant folding load-time dregs.
The optimizer eliminates calls to pure library functions when
all their arguments are D-registers. The call is made at
compiled time and its value is inserted into the program
as a constant (in a newly allocated D register).
The bug is that we can't do this for a D register that
is linked to a load-time value, because we don't know its
value until run-time.
* stdlib/optimize.tl (basic-blocks do-peephole-block): Add
a constraint that none of the D registers can be a member
of bb.lt-dregs, which holds the list of D registers that
are used for load-time values.
Diffstat (limited to 'tests/009')
0 files changed, 0 insertions, 0 deletions