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re PR target/87474 (ICE in extract_insn, at recog.c:2305)

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2018-10-02  Aaron Sawdey  <acsawdey@linux.ibm.com>

	PR target/87474
	* config/rs6000/rs6000-string.c (expand_strn_compare): Check that both
	P8_VECTOR and VSX are enabled.

From-SVN: r264799
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Aaron Sawdey 2018-10-02 17:31:53 +00:00 committed by Aaron Sawdey
parent d8ccfadbf2
commit 6bd2b8ec8d
2 changed files with 13 additions and 3 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2018-10-02 Aaron Sawdey <acsawdey@linux.ibm.com>
PR target/87474
* config/rs6000/rs6000-string.c (expand_strn_compare): Check that both
P8_VECTOR and VSX are enabled.
2018-10-02 Andreas Krebbel <krebbel@linux.ibm.com>
* config/s390/driver-native.c (s390_host_detect_local_cpu): Add

10
gcc/config/rs6000/rs6000-string.c
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@ -2205,6 +2205,7 @@ emit_final_str_compare_vec (rtx str1, rtx str2, rtx result,
}
else
{
gcc_assert (TARGET_P8_VECTOR);
rtx diffix = gen_reg_rtx (DImode);
rtx result_gbbd = gen_reg_rtx (V16QImode);
/* Since each byte of the input is either 00 or FF, the bytes in
@ -2313,9 +2314,12 @@ expand_strn_compare (rtx operands[], int no_length)
/* Is it OK to use vec/vsx for this. TARGET_VSX means we have at
least POWER7 but we use TARGET_EFFICIENT_UNALIGNED_VSX which is
at least POWER8. That way we can rely on overlapping compares to
do the final comparison of less than 16 bytes. Also I do not want
to deal with making this work for 32 bits. */
int use_vec = (bytes >= 16 && !TARGET_32BIT && TARGET_EFFICIENT_UNALIGNED_VSX);
do the final comparison of less than 16 bytes. Also I do not
want to deal with making this work for 32 bits. In addition, we
have to make sure that we have at least P8_VECTOR (we don't allow
P9_VECTOR without P8_VECTOR). */
int use_vec = (bytes >= 16 && !TARGET_32BIT
&& TARGET_EFFICIENT_UNALIGNED_VSX && TARGET_P8_VECTOR);
if (use_vec)
required_align = 16;