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| author | Richard Kenner <kenner@gcc.gnu.org> | 1996-12-07 18:58:08 -0500 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1996-12-07 18:58:08 -0500 |
| commit | 4f23aac0fc644f98e5d00504dfb247b2028b3abc (patch) | |
| tree | 260c8f17bbaf18b6cc8adb1767fd4851f6829ffd | |
| parent | 3cd3e833783b0f93afc3dbd2fe6d20a52e06457f (diff) | |
| download | gcc-4f23aac0fc644f98e5d00504dfb247b2028b3abc.zip gcc-4f23aac0fc644f98e5d00504dfb247b2028b3abc.tar.gz gcc-4f23aac0fc644f98e5d00504dfb247b2028b3abc.tar.bz2 | |
(iorsi_zexthi_ashl16): New pattern.
(ashrsi_16): New name for old unnamed pattern.
From-SVN: r13249
| -rw-r--r-- | gcc/config/m68k/m68k.md | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/gcc/config/m68k/m68k.md b/gcc/config/m68k/m68k.md index 22200f6..01dde67 100644 --- a/gcc/config/m68k/m68k.md +++ b/gcc/config/m68k/m68k.md @@ -3629,6 +3629,26 @@ "!TARGET_5200" "or%.b %1,%0") +;; On all 68k models, this makes faster code in a special case. +;; See also ashlsi_16, ashrsi_16 and lshrsi_16. + +(define_insn "iorsi_zexthi_ashl16" + [(set (match_operand:SI 0 "general_operand" "=d,d") + (ior:SI (zero_extend:SI (match_operand:HI 1 "general_operand" "dmn,dmn")) + (ashift:SI (match_operand:SI 2 "general_operand" "o,0") + (const_int 16))))] + "" + "* +{ + CC_STATUS_INIT; + if (GET_CODE (operands[2]) != REG) + { + operands[2] = adj_offsettable_operand (operands[2], 2); + output_asm_insn (\"move%.w %2,%0\", operands); + } + return \"swap %0\;mov%.w %1,%0\"; +}") + (define_insn "" [(set (match_operand:SI 0 "general_operand" "=o,d") (ior:SI (zero_extend:SI (match_operand 1 "general_operand" "dn,dmn")) @@ -4308,7 +4328,7 @@ ;; On all 68k models, this makes faster code in a special case. -(define_insn "" +(define_insn "ashrsi_16" [(set (match_operand:SI 0 "register_operand" "=d") (ashiftrt:SI (match_operand:SI 1 "register_operand" "0") (const_int 16)))] |