Re: Reload problems with only one base reg for "base + offset" addressing mode
Hi, it works. But the constrains are really long. I use "U" for memory operands with address "R18+offset", and "S" for memory operands with address "R16" or "R17", and "Q" for memory operands with constant address(such as symbol ref, or const_int), the all combinations are as more as 43 types, and I have to change "MAX_RECOG_ALTERNATIVES" from "30" to be larger constants in "recog.h". (define_insn "*iorqi3_noimm_to_reg" [(set(match_operand:QI 0 "register_mem_operand" "=r,r,r,r,r,r,r,r,r,r,r,r,r,U,U,U,S,S,S,Q,Q,Q,U,S,Q,U,U,U,U,U,U,S,S,S,S,S,S,Q,Q,Q,Q,Q,Q") (ior:QI (match_operand:QI 1 "register_mem_operand" "%0,0,0,0,U,U,U,S,S,S,Q,Q,Q,r,r,r,r,r,r,r,r,r,r,r,r,U,U,U,S,Q,Q,U,U,U,S,Q,Q,U,U,U,S,Q,Q") (match_operand:QI 2 "register_mem_operand" "U,S,Q,r,U,S,Q,U,S,Q,U,S,Q,U,S,Q,U,S,Q,U,S,Q,r,r,r,U,S,Q,S,S,Q,U,S,Q,S,S,Q,U,S,Q,S,S,Q")))] "" "..." [( set_attr "length" "3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3" ) ( set_attr "clobberb" "no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no" )]) Is there any suggestions about this "long" constraints? Thanks! 2010/7/23 Ian Lance Taylor : > redriver jiang writes: > >> Hi, >> >> You mean I should define insn like this: >> >> (define_insn "*iorqi3_imm" >> [(set (mem:QI (match_operand:HI 0 "register_operand" "b")) >> (ior:QI (mem:QI (match_operand:HI 1 "register_operand" "b") >> (mem:QI (plus: HI (match_operand:HI 2 >> "register_operand" "f") >> (match_operand: 3 HI >> "immediate_operand" "K") ] >> "" >> "..." >> [( set_attr "length" "1" )]) >> >> "b" for R16,R17,R18, and "f" for R18, "K" for immediate operand with >> range "0-127"? > > Sort of, but you shouldn't write the PLUS in the insn. Instead, write a > new constraint which accepts either a R16, R17, or R18 plus an offset. > Also, write the insn with three alternatives, with the offset constraint > in each position. > > Ian >
Re: Reload problems with only one base reg for "base + offset" addressing mode
redriver jiang writes: > But the constrains are really long. Well, yeah. > I use "U" for memory operands with address "R18+offset", and "S" for > memory operands with address "R16" or "R17", and "Q" for memory > operands with constant address(such as symbol ref, or const_int), the > all combinations are as more as 43 types, and I have to change > "MAX_RECOG_ALTERNATIVES" from "30" to be larger constants in > "recog.h". > > (define_insn "*iorqi3_noimm_to_reg" > [(set(match_operand:QI 0 "register_mem_operand" > "=r,r,r,r,r,r,r,r,r,r,r,r,r,U,U,U,S,S,S,Q,Q,Q,U,S,Q,U,U,U,U,U,U,S,S,S,S,S,S,Q,Q,Q,Q,Q,Q") > (ior:QI (match_operand:QI 1 "register_mem_operand" > "%0,0,0,0,U,U,U,S,S,S,Q,Q,Q,r,r,r,r,r,r,r,r,r,r,r,r,U,U,U,S,Q,Q,U,U,U,S,Q,Q,U,U,U,S,Q,Q") > (match_operand:QI 2 "register_mem_operand" > "U,S,Q,r,U,S,Q,U,S,Q,U,S,Q,U,S,Q,U,S,Q,U,S,Q,r,r,r,U,S,Q,S,S,Q,U,S,Q,S,S,Q,U,S,Q,S,S,Q")))] > "" > "..." > > [( set_attr "length" > "3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3" > ) > ( set_attr "clobberb" > "no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no" > )]) > > > Is there any suggestions about this "long" constraints? My only useful suggestion is that you can say (set_attr "length" "3") (set_attr "clobberb" "no") You don't have to repeat the setting if it is the same for all alternatives. Ian
gcc-4.3-20100725 is now available
Snapshot gcc-4.3-20100725 is now available on ftp://gcc.gnu.org/pub/gcc/snapshots/4.3-20100725/ and on various mirrors, see http://gcc.gnu.org/mirrors.html for details. This snapshot has been generated from the GCC 4.3 SVN branch with the following options: svn://gcc.gnu.org/svn/gcc/branches/gcc-4_3-branch revision 162521 You'll find: gcc-4.3-20100725.tar.bz2 Complete GCC (includes all of below) gcc-core-4.3-20100725.tar.bz2 C front end and core compiler gcc-ada-4.3-20100725.tar.bz2 Ada front end and runtime gcc-fortran-4.3-20100725.tar.bz2 Fortran front end and runtime gcc-g++-4.3-20100725.tar.bz2 C++ front end and runtime gcc-java-4.3-20100725.tar.bz2 Java front end and runtime gcc-objc-4.3-20100725.tar.bz2 Objective-C front end and runtime gcc-testsuite-4.3-20100725.tar.bz2The GCC testsuite Diffs from 4.3-20100718 are available in the diffs/ subdirectory. When a particular snapshot is ready for public consumption the LATEST-4.3 link is updated and a message is sent to the gcc list. Please do not use a snapshot before it has been announced that way.
