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| author | Richard Kenner <kenner@gcc.gnu.org> | 1995-06-09 17:48:51 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1995-06-09 17:48:51 -0400 |
| commit | 17856c497fa53217a7bde0e6c622ad8b61fd956f (patch) | |
| tree | c7642a99e38c23f56a11307094c3f3a8b0215bfd /gcc | |
| parent | 7a208c0b6726d7b48b7c78ef8ce91b3f279ec228 (diff) | |
| download | gcc-17856c497fa53217a7bde0e6c622ad8b61fd956f.zip gcc-17856c497fa53217a7bde0e6c622ad8b61fd956f.tar.gz gcc-17856c497fa53217a7bde0e6c622ad8b61fd956f.tar.bz2 | |
(tstdi): Rewrite.
From-SVN: r9913
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/m68k/m68k.md | 37 |
1 files changed, 16 insertions, 21 deletions
diff --git a/gcc/config/m68k/m68k.md b/gcc/config/m68k/m68k.md index e16004e..db632e6 100644 --- a/gcc/config/m68k/m68k.md +++ b/gcc/config/m68k/m68k.md @@ -281,31 +281,26 @@ ;; (set (cc0) (const_int foo)) has no mode information. Such insns will ;; be folded while optimizing anyway. -(define_insn "tstdi" +(define_expand "tstdi" + [(parallel + [(set (cc0) + (match_operand:DI 0 "nonimmediate_operand" "d")) + (clobber (match_dup 1))])] + "" + " +{ + operands[1] = gen_reg_rtx (DImode); +}") + +(define_insn "" [(set (cc0) - (match_operand:DI 0 "nonimmediate_operand" "oa>,d")) - (clobber (match_scratch:SI 1 "=d,d")) - (clobber (match_scratch:SI 2 "=d,"))] + (match_operand:DI 1 "nonimmediate_operand" "0")) + (clobber (match_operand:DI 0 "register_operand" "=d"))] "" "* { - if (GET_CODE (operands[0]) == REG) - operands[3] = gen_rtx (REG, SImode, REGNO (operands[0]) + 1); - else if (GET_CODE (operands[0]) == MEM - && GET_CODE (XEXP (operands[0], 0)) == POST_INC) - operands[3] = operands[0]; - else - operands[3] = adj_offsettable_operand (operands[0], 4); - if (DATA_REG_P (operands[0])) - operands[2] = operands[0]; - else - output_asm_insn (\"move%.l %0,%2\", operands); - /* - ** 'sub' clears %1, and also clears the X cc bit - ** 'tst' sets the Z cc bit according to the low part of the DImode operand - ** 'subx %1' (i.e. subx #0) acts as a (non-existent) tstx on the high part - */ - return \"sub%.l %1,%1\;tst%.l %3\;subx%.l %1,%2\"; + cc_status.flags |= CC_REVERSED; + return \"neg%.l %R0\;negx%.l %0\"; }") (define_insn "tstsi" |