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| author | Richard Henderson <rth@redhat.com> | 2007-02-12 10:53:22 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2007-02-12 10:53:22 -0800 |
| commit | fffef1dc7ace1a016c3de1f20e6d2f8f399a9fb9 (patch) | |
| tree | 37f86bd962a54ff98ce454b52dba53ceabc07932 | |
| parent | 7ab0aca2fecff07dbc2dd3cf01e6288bf4a18454 (diff) | |
| download | gcc-fffef1dc7ace1a016c3de1f20e6d2f8f399a9fb9.zip gcc-fffef1dc7ace1a016c3de1f20e6d2f8f399a9fb9.tar.gz gcc-fffef1dc7ace1a016c3de1f20e6d2f8f399a9fb9.tar.bz2 | |
alpha.md (bswapsi2, bswapdi2): New.
* config/alpha/alpha.md (bswapsi2, bswapdi2): New.
(inswl_const): Export.
From-SVN: r121853
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/alpha/alpha.md | 56 |
2 files changed, 60 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e23a321..f8a1d0b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,10 @@ 2007-02-12 Richard Henderson <rth@redhat.com> + * config/alpha/alpha.md (bswapsi2, bswapdi2): New. + (inswl_const): Export. + +2007-02-12 Richard Henderson <rth@redhat.com> + * calls.c (emit_library_call_value_1): If PROMOTE_MODE modifed the result mode of the libcall, convert back to outmode. diff --git a/gcc/config/alpha/alpha.md b/gcc/config/alpha/alpha.md index 87871cc..3edd04c 100644 --- a/gcc/config/alpha/alpha.md +++ b/gcc/config/alpha/alpha.md @@ -1437,6 +1437,60 @@ "TARGET_CIX" "ctpop %1,%0" [(set_attr "type" "mvi")]) + +(define_expand "bswapsi2" + [(set (match_operand:SI 0 "register_operand" "") + (bswap:SI (match_operand:SI 1 "register_operand" "")))] + "!optimize_size" +{ + rtx t0, t1; + + t0 = gen_reg_rtx (DImode); + t1 = gen_reg_rtx (DImode); + + emit_insn (gen_insxh (t0, gen_lowpart (DImode, operands[1]), + GEN_INT (32), GEN_INT (WORDS_BIG_ENDIAN ? 0 : 7))); + emit_insn (gen_inswl_const (t1, gen_lowpart (HImode, operands[1]), + GEN_INT (24))); + emit_insn (gen_iordi3 (t1, t0, t1)); + emit_insn (gen_lshrdi3 (t0, t1, GEN_INT (16))); + emit_insn (gen_anddi3 (t1, t1, alpha_expand_zap_mask (0x5))); + emit_insn (gen_anddi3 (t0, t0, alpha_expand_zap_mask (0xa))); + emit_insn (gen_addsi3 (operands[0], gen_lowpart (SImode, t0), + gen_lowpart (SImode, t1))); + DONE; +}) + +(define_expand "bswapdi2" + [(set (match_operand:DI 0 "register_operand" "") + (bswap:DI (match_operand:DI 1 "register_operand" "")))] + "!optimize_size" +{ + rtx t0, t1; + + t0 = gen_reg_rtx (DImode); + t1 = gen_reg_rtx (DImode); + + /* This method of shifting and masking is not specific to Alpha, but + is only profitable on Alpha because of our handy byte zap insn. */ + + emit_insn (gen_lshrdi3 (t0, operands[1], GEN_INT (32))); + emit_insn (gen_ashldi3 (t1, operands[1], GEN_INT (32))); + emit_insn (gen_iordi3 (t1, t0, t1)); + + emit_insn (gen_lshrdi3 (t0, t1, GEN_INT (16))); + emit_insn (gen_ashldi3 (t1, t1, GEN_INT (16))); + emit_insn (gen_anddi3 (t0, t0, alpha_expand_zap_mask (0xcc))); + emit_insn (gen_anddi3 (t1, t1, alpha_expand_zap_mask (0x33))); + emit_insn (gen_iordi3 (t1, t0, t1)); + + emit_insn (gen_lshrdi3 (t0, t1, GEN_INT (8))); + emit_insn (gen_ashldi3 (t1, t1, GEN_INT (8))); + emit_insn (gen_anddi3 (t0, t0, alpha_expand_zap_mask (0xaa))); + emit_insn (gen_anddi3 (t1, t1, alpha_expand_zap_mask (0x55))); + emit_insn (gen_iordi3 (operands[0], t0, t1)); + DONE; +}) ;; Next come the shifts and the various extract and insert operations. @@ -2008,7 +2062,7 @@ "insbl %1,%s2,%0" [(set_attr "type" "shift")]) -(define_insn "*inswl_const" +(define_insn "inswl_const" [(set (match_operand:DI 0 "register_operand" "=r") (ashift:DI (zero_extend:DI (match_operand:HI 1 "register_operand" "r")) (match_operand:DI 2 "mul8_operand" "I")))] |