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rs6000-string.c (expand_compare_loop, [...]): Insert REG_BR_PROB notes in inline expansion of memcmp/strncmp. 

2019-02-09  Aaron Sawdey  <acsawdey@linux.ibm.com>

	* config/rs6000/rs6000-string.c (expand_compare_loop,
	expand_block_compare): Insert REG_BR_PROB notes in inline expansion of
	memcmp/strncmp.

From-SVN: r268724
This commit is contained in:
Aaron Sawdey 2019-02-09 17:06:12 +00:00 committed by Aaron Sawdey
parent b9cee23e86
commit 5585759fdb
2 changed files with 9 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2019-02-09 Aaron Sawdey <acsawdey@linux.ibm.com>
* config/rs6000/rs6000-string.c (expand_compare_loop,
expand_block_compare): Insert REG_BR_PROB notes in inline expansion of
memcmp/strncmp.
2019-02-09 Jakub Jelinek <jakub@redhat.com>
PR middle-end/89246

4
gcc/config/rs6000/rs6000-string.c
View File

@ -1525,6 +1525,7 @@ expand_compare_loop (rtx operands[])
else
j = emit_jump_insn (gen_bdnztf_si (fc_loop, ctr, ctr,
eqrtx, cond));
add_reg_br_prob_note (j, profile_probability::likely ());
JUMP_LABEL (j) = fc_loop;
LABEL_NUSES (fc_loop) += 1;
@ -1896,7 +1897,8 @@ expand_block_compare_gpr(unsigned HOST_WIDE_INT bytes, unsigned int base_align,
rtx ne_rtx = gen_rtx_NE (VOIDmode, cond, const0_rtx);
rtx ifelse = gen_rtx_IF_THEN_ELSE (VOIDmode, ne_rtx,
cvt_ref, pc_rtx);
rtx j = emit_jump_insn (gen_rtx_SET (pc_rtx, ifelse));
rtx_insn *j = emit_jump_insn (gen_rtx_SET (pc_rtx, ifelse));
add_reg_br_prob_note (j, profile_probability::likely ());
JUMP_LABEL (j) = convert_label;
LABEL_NUSES (convert_label) += 1;
}