diff options
| author | Aaron Sawdey <acsawdey@linux.ibm.com> | 2018-11-02 17:02:38 +0000 |
|---|---|---|
| committer | Aaron Sawdey <acsawdey@gcc.gnu.org> | 2018-11-02 12:02:38 -0500 |
| commit | 122d6c36552fd516efee6e57e68103ec693a9ff5 (patch) | |
| tree | 192ddf6b5071d1d838097bd8fbf3f980904a6fbf | |
| parent | 5f7dbaa0adbe5148029177b198ae3dc26e1ff257 (diff) | |
| download | gcc-122d6c36552fd516efee6e57e68103ec693a9ff5.zip gcc-122d6c36552fd516efee6e57e68103ec693a9ff5.tar.gz gcc-122d6c36552fd516efee6e57e68103ec693a9ff5.tar.bz2 | |
rs6000-string.c (expand_strncmp_gpr_sequence): Pay attention to TARGET_AVOID_XFORM and BYTES_BIG_ENDIAN.
2018-11-02 Aaron Sawdey <acsawdey@linux.ibm.com>
* config/rs6000/rs6000-string.c (expand_strncmp_gpr_sequence): Pay
attention to TARGET_AVOID_XFORM and BYTES_BIG_ENDIAN.
From-SVN: r265751
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/rs6000/rs6000-string.c | 16 |
2 files changed, 16 insertions, 5 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3ddb149..5cf291d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2018-11-02 Aaron Sawdey <acsawdey@linux.ibm.com> + + * config/rs6000/rs6000-string.c (expand_strncmp_gpr_sequence): Pay + attention to TARGET_AVOID_XFORM and BYTES_BIG_ENDIAN. + 2018-11-02 Richard Earnshaw <rearnsha@arm.com> * config/aarch64/aarch64.c ((aarch64_override_options): Disable diff --git a/gcc/config/rs6000/rs6000-string.c b/gcc/config/rs6000/rs6000-string.c index 96729d9..22fe966 100644 --- a/gcc/config/rs6000/rs6000-string.c +++ b/gcc/config/rs6000/rs6000-string.c @@ -1798,12 +1798,18 @@ expand_strncmp_gpr_sequence (unsigned HOST_WIDE_INT bytes_to_compare, rid of the extra bytes. */ cmp_bytes = bytes_to_compare; - rtx offset_reg = gen_reg_rtx (Pmode); - emit_move_insn (offset_reg, GEN_INT (offset)); - - rtx addr1 = gen_rtx_PLUS (Pmode, src1_addr, offset_reg); + rtx offset_rtx; + if (BYTES_BIG_ENDIAN || TARGET_AVOID_XFORM) + offset_rtx = GEN_INT (offset); + else + { + offset_rtx = gen_reg_rtx (Pmode); + emit_move_insn (offset_rtx, GEN_INT (offset)); + } + rtx addr1 = gen_rtx_PLUS (Pmode, src1_addr, offset_rtx); + rtx addr2 = gen_rtx_PLUS (Pmode, src2_addr, offset_rtx); + do_load_for_compare_from_addr (load_mode, tmp_reg_src1, addr1, orig_src1); - rtx addr2 = gen_rtx_PLUS (Pmode, src2_addr, offset_reg); do_load_for_compare_from_addr (load_mode, tmp_reg_src2, addr2, orig_src2); /* We must always left-align the data we read, and |