+ take advantage of the mla instruction when calculating array offsets

git-svn-id: trunk@21375 -

.gitattributes

@@ -62,6 +62,7 @@ compiler/arm/narmcnv.pas svneol=native#text/plain
 compiler/arm/narmcon.pas svneol=native#text/plain
 compiler/arm/narminl.pas svneol=native#text/plain
 compiler/arm/narmmat.pas svneol=native#text/plain
+compiler/arm/narmmem.pas svneol=native#text/plain
 compiler/arm/narmset.pas svneol=native#text/plain
 compiler/arm/pp.lpi.template svneol=native#text/plain
 compiler/arm/raarm.pas svneol=native#text/plain

compiler/arm/cpunode.pas

@@ -40,7 +40,8 @@ unit cpunode;
        narminl,
        narmcnv,
        narmcon,
-       narmset
+       narmset,
+       narmmem
        ;
 
 

compiler/arm/narmmem.pas

@@ -0,0 +1,91 @@
+{
+    Copyright (c) 2012 by Florian Klaempfl
+
+    Generate arm assembler for in memory related nodes
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ ****************************************************************************
+}
+unit narmmem;
+
+{$i fpcdefs.inc}
+
+interface
+
+    uses
+      globtype,
+      cgbase,cpuinfo,cpubase,
+      node,nmem,ncgmem;
+
+    type
+      tarmvecnode = class(tcgvecnode)
+        procedure update_reference_reg_mul(maybe_const_reg: tregister; l: aint);override;
+      end;
+
+implementation
+
+    uses
+      systems,
+      cutils,verbose,
+      symdef,paramgr,
+      aasmtai,aasmdata,aasmcpu,
+      nld,ncon,nadd,
+      cgutils,cgobj;
+
+{*****************************************************************************
+                             TARMVECNODE
+*****************************************************************************}
+
+     procedure tarmvecnode.update_reference_reg_mul(maybe_const_reg:tregister;l:aint);
+       var
+         hreg: tregister;
+         hl : longint;
+       begin
+         if ((location.reference.base=NR_NO) and (location.reference.index=NR_NO)) or
+            { simple constant? }
+            (l=1) or ispowerof2(l,hl) or ispowerof2(l+1,hl) or ispowerof2(l-1,hl) then
+           inherited update_reference_reg_mul(maybe_const_reg,l)
+         else if (location.reference.base<>NR_NO) then
+           begin
+             hreg:=cg.getaddressregister(current_asmdata.CurrAsmList);
+             cg.a_load_const_reg(current_asmdata.CurrAsmList,OS_ADDR,l,hreg);
+             current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg_reg_reg(A_MLA,hreg,maybe_const_reg,hreg,location.reference.base));
+             location.reference.base:=hreg;
+             { update alignment }
+             if (location.reference.alignment=0) then
+               internalerror(2012052202);
+             location.reference.alignment:=newalignment(location.reference.alignment,l);
+           end
+         else if (location.reference.index<>NR_NO) then
+           begin
+             hreg:=cg.getaddressregister(current_asmdata.CurrAsmList);
+             cg.a_load_const_reg(current_asmdata.CurrAsmList,OS_ADDR,l,hreg);
+             current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg_reg_reg(A_MLA,hreg,maybe_const_reg,hreg,location.reference.index));
+             location.reference.base:=hreg;
+             location.reference.index:=NR_NO;
+             { update alignment }
+             if (location.reference.alignment=0) then
+               internalerror(2012052203);
+             location.reference.alignment:=newalignment(location.reference.alignment,l);
+           end
+         else
+           internalerror(2012052201);
+       end;
+
+
+begin
+  cvecnode:=tarmvecnode;
+end.