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| author | Georg-Johann Lay <avr@gjlay.de> | 2011-06-21 17:30:54 +0000 |
|---|---|---|
| committer | Georg-Johann Lay <gjl@gcc.gnu.org> | 2011-06-21 17:30:54 +0000 |
| commit | 663827d3e5b2ae5fdbcc8b2b6591910b886af3b2 (patch) | |
| tree | f4cb0e57d5b8a47d649a75d10793b2a90a0bd8c1 | |
| parent | 61d2c24233c52c2440cd285a3c3e97025fd6a7b9 (diff) | |
| download | gcc-663827d3e5b2ae5fdbcc8b2b6591910b886af3b2.zip gcc-663827d3e5b2ae5fdbcc8b2b6591910b886af3b2.tar.gz gcc-663827d3e5b2ae5fdbcc8b2b6591910b886af3b2.tar.bz2 | |
re PR target/33049 ([avr] bit extraction non optimal, inversing logic solves problem)
PR target/33049
* config/avr/avr.md (extzv): New expander.
(*extzv): New insn.
(*extzv.qihi1, *extzv.qihi2): New insn-and-split.
* config/avr/constraints.md (C04): New constraint.
* doc/md.texi (Machine Constraints): Document it.
From-SVN: r175269
| -rw-r--r-- | gcc/ChangeLog | 9 | ||||
| -rw-r--r-- | gcc/config/avr/avr.md | 62 | ||||
| -rw-r--r-- | gcc/config/avr/constraints.md | 5 | ||||
| -rw-r--r-- | gcc/doc/md.texi | 3 |
4 files changed, 79 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index db3b00b..3e0d8ac 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,12 @@ +2011-06-21 Georg-Johann Lay <avr@gjlay.de> + + PR target/33049 + * config/avr/avr.md (extzv): New expander. + (*extzv): New insn. + (*extzv.qihi1, *extzv.qihi2): New insn-and-split. + * config/avr/constraints.md (C04): New constraint. + * doc/md.texi (Machine Constraints): Document it. + 2011-06-21 Jakub Jelinek <jakub@redhat.com> PR middle-end/49489 diff --git a/gcc/config/avr/avr.md b/gcc/config/avr/avr.md index 4d77b0e..0e5031c 100644 --- a/gcc/config/avr/avr.md +++ b/gcc/config/avr/avr.md @@ -3539,3 +3539,65 @@ int byteno = INTVAL(operands[2]) / BITS_PER_UNIT; operands[4] = simplify_gen_subreg (QImode, operands[0], <MODE>mode, byteno); }) + +(define_expand "extzv" + [(set (match_operand:QI 0 "register_operand" "") + (zero_extract:QI (match_operand:QI 1 "register_operand" "") + (match_operand:QI 2 "const1_operand" "") + (match_operand:QI 3 "const_0_to_7_operand" "")))] + "" + "") + +(define_insn "*extzv" + [(set (match_operand:QI 0 "register_operand" "=*d,*d,*d,*d,r") + (zero_extract:QI (match_operand:QI 1 "register_operand" "0,r,0,0,r") + (const_int 1) + (match_operand:QI 2 "const_0_to_7_operand" "L,L,P,C04,n")))] + "" + "@ + andi %0,1 + mov %0,%1\;andi %0,1 + lsr %0\;andi %0,1 + swap %0\;andi %0,1 + bst %1,%2\;clr %0\;bld %0,0" + [(set_attr "length" "1,2,2,2,3") + (set_attr "cc" "set_zn,set_zn,set_zn,set_zn,clobber")]) + +(define_insn_and_split "*extzv.qihi1" + [(set (match_operand:HI 0 "register_operand" "=r") + (zero_extract:HI (match_operand:QI 1 "register_operand" "r") + (const_int 1) + (match_operand:QI 2 "const_0_to_7_operand" "n")))] + "" + "#" + "" + [(set (match_dup 3) + (zero_extract:QI (match_dup 1) + (const_int 1) + (match_dup 2))) + (set (match_dup 4) + (const_int 0))] + { + operands[3] = simplify_gen_subreg (QImode, operands[0], HImode, 0); + operands[4] = simplify_gen_subreg (QImode, operands[0], HImode, 1); + }) + +(define_insn_and_split "*extzv.qihi2" + [(set (match_operand:HI 0 "register_operand" "=r") + (zero_extend:HI + (zero_extract:QI (match_operand:QI 1 "register_operand" "r") + (const_int 1) + (match_operand:QI 2 "const_0_to_7_operand" "n"))))] + "" + "#" + "" + [(set (match_dup 3) + (zero_extract:QI (match_dup 1) + (const_int 1) + (match_dup 2))) + (set (match_dup 4) + (const_int 0))] + { + operands[3] = simplify_gen_subreg (QImode, operands[0], HImode, 0); + operands[4] = simplify_gen_subreg (QImode, operands[0], HImode, 1); + }) diff --git a/gcc/config/avr/constraints.md b/gcc/config/avr/constraints.md index 2ac8833..e754c79 100644 --- a/gcc/config/avr/constraints.md +++ b/gcc/config/avr/constraints.md @@ -107,3 +107,8 @@ "A memory address based on Y or Z pointer with displacement." (and (match_code "mem") (match_test "extra_constraint_Q (op)"))) + +(define_constraint "C04" + "Constant integer 4." + (and (match_code "const_int") + (match_test "ival == 4"))) diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi index 65e4070..abe51f8 100644 --- a/gcc/doc/md.texi +++ b/gcc/doc/md.texi @@ -1773,6 +1773,9 @@ Integer constant in the range @minus{}6 @dots{} 5. @item Q A memory address based on Y or Z pointer with displacement. + +@item C04 +Constant integer 4 @end table @item Hewlett-Packard PA-RISC---@file{config/pa/pa.h} |