Bernd Schmidt - Blackfin patch: rotate by 16 patterns (original) (raw)

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• From: Bernd Schmidt <bernds_cb1 at t-online dot de>
• To: GCC Patches
• Date: Tue, 27 Feb 2007 16:27:24 +0100
• Subject: Blackfin patch: rotate by 16 patterns

Rotate by 16 can be implemented with the PACK instruction on the Blackfin. Committed as 122377.

Bernd

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Index: ChangeLog

--- ChangeLog (revision 122376) +++ ChangeLog (working copy) @@ -46,6 +46,8 @@ * config/bfin/bfin.c (bfin_output_mi_thunk): Use R3 as scratch reg instead of R2. + * config/bfin/bfin.md (rotl16, rotlsi3, rotrsi3): New patterns. + 2007-02-27 Andreas Schwab schwab@suse.de * Makefile.in (TEXI_GCCINSTALL_FILES): Add gcc-common.texi. Index: config/bfin/bfin.md

--- config/bfin/bfin.md (revision 122374) +++ config/bfin/bfin.md (working copy) @@ -1477,6 +1477,37 @@ (define_insn "ashrsi3" %0 = %1 >>> %2%!" [(set_attr "type" "shft,dsp32")])

+(define_insn "rotl16"

• [(set (match_operand:SI 0 "register_operand" "=d")
• (rotate:SI (match_operand:SI 1 "register_operand" "d")

•      (const_int 16)))]

• ""
• "%0 = PACK (%h1, %d1)%!"
• [(set_attr "type" "dsp32")])
• +(define_expand "rotlsi3"
• [(set (match_operand:SI 0 "register_operand" "")
• (rotate:SI (match_operand:SI 1 "register_operand" "")

•      (match_operand:SI 2 "immediate_operand" "")))]

• "" +{
• if (INTVAL (operands[2]) != 16)
• FAIL;

+}) + +(define_expand "rotrsi3"

• [(set (match_operand:SI 0 "register_operand" "")
• (rotatert:SI (match_operand:SI 1 "register_operand" "")

•        (match_operand:SI 2 "immediate_operand" "")))]

• "" +{
• if (INTVAL (operands[2]) != 16)
• FAIL;
• emit_insn (gen_rotl16 (operands[0], operands[1]));
• DONE; +})
• (define_insn "ror_one" [(set (match_operand:SI 0 "register_operand" "=d") (ior:SI (lshiftrt:SI (match_operand:SI 1 "register_operand" "d") (const_int 1))