From ec40d28c250d41a96e5f4e58cdb3decda5a4481a Mon Sep 17 00:00:00 2001 From: ceriel Date: Wed, 22 Jun 1988 13:47:57 +0000 Subject: [PATCH] Added some patterns to evaluate constant shifts --- util/opt/patterns | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/util/opt/patterns b/util/opt/patterns index f9397d703..e05f92821 100644 --- a/util/opt/patterns +++ b/util/opt/patterns @@ -179,6 +179,14 @@ ldc mli $1==1 && $2==2*w: loc mlu $1==1 && $2==w: ldc mlu $1==1 && $2==2*w: loc sbi $1==1 && $2==w: dec +loc loc sli $3==w: loc ($1 << $2) +loc loc slu $3==w: loc ($1 << $2) +ldc loc sli $3==2*w: ldc ($1 << $2) +ldc loc slu $3==2*w: ldc ($1 << $2) +loc loc sri $3==w: loc ($1 >> $2) +loc loc sru $1 >= 0 && $3==w: loc ($1 >> $2) +ldc loc sri $3==2*w: ldc ($1 >> $2) +ldc loc sru $1 >= 0 && $3==2*w: ldc ($1 >> $2) loc loe mlu $3==w: loe $2 loc $1 mlu w loc lol mlu $3==w: lol $2 loc $1 mlu w ldc lde mlu $3==2*w: lde $2 ldc $1 mlu 2*w -- 2.34.1