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| author | Richard Henderson <rth@redhat.com> | 2004-11-05 16:46:44 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2004-11-05 16:46:44 -0800 |
| commit | 9f7d06d693cc3c45b0213fbe115d56b252279dbe (patch) | |
| tree | 0fcebd9a2c7387d9db901a77b6f63722adf88b8a | |
| parent | 637022d94553359f5008b47699c84da48a25eee0 (diff) | |
| download | gcc-9f7d06d693cc3c45b0213fbe115d56b252279dbe.zip gcc-9f7d06d693cc3c45b0213fbe115d56b252279dbe.tar.gz gcc-9f7d06d693cc3c45b0213fbe115d56b252279dbe.tar.bz2 | |
alpha.c (alpha_expand_unaligned_load): Special case size 2 with BWX.
* config/alpha/alpha.c (alpha_expand_unaligned_load): Special case
size 2 with BWX.
(alpha_expand_unaligned_store): Likewise.
From-SVN: r90156
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/alpha/alpha.c | 53 |
2 files changed, 58 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index d654bf8..dd21cb1 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 2004-11-05 Richard Henderson <rth@redhat.com> + * config/alpha/alpha.c (alpha_expand_unaligned_load): Special case + size 2 with BWX. + (alpha_expand_unaligned_store): Likewise. + +2004-11-05 Richard Henderson <rth@redhat.com> + * expmed.c (extract_force_align_mem_bit_field): New. (extract_split_bit_field): Call it. diff --git a/gcc/config/alpha/alpha.c b/gcc/config/alpha/alpha.c index cefe86d..5151571 100644 --- a/gcc/config/alpha/alpha.c +++ b/gcc/config/alpha/alpha.c @@ -3164,6 +3164,35 @@ alpha_expand_unaligned_load (rtx tgt, rtx mem, HOST_WIDE_INT size, rtx meml, memh, addr, extl, exth, tmp, mema; enum machine_mode mode; + if (TARGET_BWX && size == 2) + { + meml = adjust_address (mem, QImode, 0); + memh = adjust_address (mem, QImode, 1); + if (BYTES_BIG_ENDIAN) + tmp = meml, meml = memh, memh = tmp; + extl = gen_reg_rtx (DImode); + exth = gen_reg_rtx (DImode); + emit_insn (gen_zero_extendqidi2 (extl, meml)); + emit_insn (gen_zero_extendqidi2 (exth, memh)); + exth = expand_simple_binop (DImode, ASHIFT, exth, GEN_INT (8), + NULL, 1, OPTAB_LIB_WIDEN); + addr = expand_simple_binop (DImode, IOR, extl, exth, + NULL, 1, OPTAB_LIB_WIDEN); + + if (sign && GET_MODE (tgt) != HImode) + { + addr = gen_lowpart (HImode, addr); + emit_insn (gen_extend_insn (tgt, addr, GET_MODE (tgt), HImode, 0)); + } + else + { + if (GET_MODE (tgt) != DImode) + addr = gen_lowpart (GET_MODE (tgt), addr); + emit_move_insn (tgt, addr); + } + return; + } + meml = gen_reg_rtx (DImode); memh = gen_reg_rtx (DImode); addr = gen_reg_rtx (DImode); @@ -3276,7 +3305,7 @@ alpha_expand_unaligned_load (rtx tgt, rtx mem, HOST_WIDE_INT size, } if (addr != tgt) - emit_move_insn (tgt, gen_lowpart(GET_MODE (tgt), addr)); + emit_move_insn (tgt, gen_lowpart (GET_MODE (tgt), addr)); } /* Similarly, use ins and msk instructions to perform unaligned stores. */ @@ -3287,6 +3316,28 @@ alpha_expand_unaligned_store (rtx dst, rtx src, { rtx dstl, dsth, addr, insl, insh, meml, memh, dsta; + if (TARGET_BWX && size == 2) + { + if (src != const0_rtx) + { + dstl = gen_lowpart (QImode, src); + dsth = expand_simple_binop (DImode, LSHIFTRT, src, GEN_INT (8), + NULL, 1, OPTAB_LIB_WIDEN); + dsth = gen_lowpart (QImode, dsth); + } + else + dstl = dsth = const0_rtx; + + meml = adjust_address (dst, QImode, 0); + memh = adjust_address (dst, QImode, 1); + if (BYTES_BIG_ENDIAN) + addr = meml, meml = memh, memh = addr; + + emit_move_insn (meml, dstl); + emit_move_insn (memh, dsth); + return; + } + dstl = gen_reg_rtx (DImode); dsth = gen_reg_rtx (DImode); insl = gen_reg_rtx (DImode); |