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| author | Kaz Kylheku <kaz@kylheku.com> | 2020-05-01 06:44:12 -0700 |
|---|---|---|
| committer | Kaz Kylheku <kaz@kylheku.com> | 2020-05-01 06:44:12 -0700 |
| commit | d1164882aa75bcf271a9bd6befcc11f4466ca2fd (patch) | |
| tree | 0c4adfe964c73f5893477635dc4ebc5a3544b772 | |
| parent | ae064b0ecc0c699bd5e293eada2ee15dabc506be (diff) | |
| download | txr-d1164882aa75bcf271a9bd6befcc11f4466ca2fd.tar.gz txr-d1164882aa75bcf271a9bd6befcc11f4466ca2fd.tar.bz2 txr-d1164882aa75bcf271a9bd6befcc11f4466ca2fd.zip | |
compiler: load-time: eliminate temp register.
* share/txr/stdlib/compiler.tl (compiler comp-load-time-lit):
When compiling the load-time argument expression, indicate the
allocated D register as the destination, rather than using a
freshly allocated T register. Now we need an instruction to
move into the D reg only if the fragment chose a different
register.
| -rw-r--r-- | share/txr/stdlib/compiler.tl | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/share/txr/stdlib/compiler.tl b/share/txr/stdlib/compiler.tl index cd5f3150..ca86db11 100644 --- a/share/txr/stdlib/compiler.tl +++ b/share/txr/stdlib/compiler.tl @@ -1242,16 +1242,14 @@ (if loaded-p me.(compile oreg env ^(quote ,exp)) (compile-in-toplevel me - (let* ((oreg me.(alloc-treg)) - (dreg me.(alloc-dreg)) - (exp me.(compile oreg (new env co me) exp)) + (let* ((dreg me.(alloc-dreg)) + (exp me.(compile dreg (new env co me) exp)) (lt-frag (new (frag dreg ^(,*exp.code - (mov ,dreg ,exp.oreg)) + ,*(maybe-mov dreg exp.oreg)) exp.fvars exp.ffuns)))) (misleading-ref-check exp env form) - me.(free-treg oreg) (push lt-frag me.lt-frags) (new (frag dreg nil))))))) |