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compiler.cfg.ssa.destruction: we can coalesce two registers with different representations as long as they both belong to the same register class

db4
Slava Pestov 2009-09-28 03:24:54 -05:00
parent 530accdad9
commit da5f0d0a14
1 changed files with 2 additions and 1 deletions
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basis/compiler/cfg/ssa/destruction/destruction.factor
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@ -3,6 +3,7 @@
USING: accessors arrays assocs fry kernel namespaces USING: accessors arrays assocs fry kernel namespaces
sequences sequences.deep sequences sequences.deep
sets vectors sets vectors
cpu.architecture
compiler.cfg.rpo compiler.cfg.rpo
compiler.cfg.def-use compiler.cfg.def-use
compiler.cfg.renaming compiler.cfg.renaming
@ -67,7 +68,7 @@ M: insn prepare-insn
[ defs-vreg ] [ uses-vregs ] bi [ defs-vreg ] [ uses-vregs ] bi
2dup empty? not and [ 2dup empty? not and [
first first
2dup [ rep-of ] bi@ eq? 2dup [ rep-of reg-class-of ] bi@ eq?
[ try-to-coalesce ] [ 2drop ] if [ try-to-coalesce ] [ 2drop ] if
] [ 2drop ] if ; ] [ 2drop ] if ;