Author: Armin Rigo <ar...@tunes.org>
Branch:
Changeset: r74795:4e877792713b
Date: 2014-12-03 12:19 +0100
http://bitbucket.org/pypy/pypy/changeset/4e877792713b/
Log: fix a bit more cleanly without writing to the stack
diff --git a/rpython/jit/backend/x86/assembler.py
b/rpython/jit/backend/x86/assembler.py
--- a/rpython/jit/backend/x86/assembler.py
+++ b/rpython/jit/backend/x86/assembler.py
@@ -1152,15 +1152,15 @@
if isinstance(argloc, RegLoc):
if WORD == 4 and argloc.value >= 4:
# meh, can't read the lowest byte of esi or edi on 32-bit
- if resloc.value < 4:
+ if resloc is not argloc:
self.mc.MOV(resloc, argloc)
argloc = resloc
- else:
- tmploc = RawEspLoc(0, INT)
- self.mc.MOV(tmploc, argloc)
- argloc = tmploc
- if isinstance(argloc, RegLoc):
- argloc = argloc.lowest8bits()
+ if resloc.value >= 4:
+ # still annoyed, hack needed
+ self.mc.SHL_ri(resloc.value, 24)
+ self.mc.SAR_ri(resloc.value, 24)
+ return
+ argloc = argloc.lowest8bits()
self.mc.MOVSX8(resloc, argloc)
elif numbytesloc.value == 2:
self.mc.MOVSX16(resloc, argloc)
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