Author: hager <[email protected]>
Branch: ppc-jit-backend
Changeset: r48515:064b64295d89
Date: 2011-10-26 10:38 +0200
http://bitbucket.org/pypy/pypy/changeset/064b64295d89/
Log: Ok, there actually IS an SLWI instr. on PPC. Improved generated code
in emit_unicodegetitem and emit_unicodesetitem.
diff --git a/pypy/jit/backend/ppc/ppcgen/opassembler.py
b/pypy/jit/backend/ppc/ppcgen/opassembler.py
--- a/pypy/jit/backend/ppc/ppcgen/opassembler.py
+++ b/pypy/jit/backend/ppc/ppcgen/opassembler.py
@@ -401,9 +401,7 @@
def emit_unicodegetitem(self, op, arglocs, regalloc):
res, base_loc, ofs_loc, scale, basesize, itemsize = arglocs
- # XXX arrrrgh, why does PPC not have an SLWI instruction ?
- self.mc.li(r.r0.value, scale.value)
- self.mc.slw(ofs_loc.value, ofs_loc.value, r.r0.value)
+ self.mc.slwi(ofs_loc.value, ofs_loc.value, scale.value)
self.mc.add(res.value, base_loc.value, ofs_loc.value)
if scale.value == 2:
@@ -417,8 +415,7 @@
def emit_unicodesetitem(self, op, arglocs, regalloc):
value_loc, base_loc, ofs_loc, scale, basesize, itemsize = arglocs
- self.mc.li(r.r0.value, scale.value)
- self.mc.slw(ofs_loc.value, ofs_loc.value, r.r0.value)
+ self.mc.slwi(ofs_loc.value, ofs_loc.value, scale.value)
self.mc.add(base_loc.value, base_loc.value, ofs_loc.value)
if scale.value == 2:
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