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re PR middle-end/86511 (Traps are generated for non-trapping compares) 

PR target/86511
	* expmed.c (emit_store_flag): Do not emit setcc followed by a
	conditional move when trapping comparison was split to a
	non-trapping one (and vice versa).

From-SVN: r262736
This commit is contained in:
Uros Bizjak 2018-07-16 17:11:57 +02:00
parent e2144dde6e
commit f4eafec9bc
2 changed files with 17 additions and 4 deletions
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10
gcc/ChangeLog
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@ -1,3 +1,10 @@
2018-07-16 Uros Bizjak <ubizjak@gmail.com>
PR target/86511
* expmed.c (emit_store_flag): Do not emit setcc followed by a
conditional move when trapping comparison was split to a
non-trapping one (and vice versa).
2018-07-16 Ilya Leoshkevich <iii@linux.ibm.com>
* config/s390/s390.c (s390_function_profiler): Generate nops
@ -130,7 +137,8 @@
call by using a sequence of char comparison.
(inline_expand_builtin_string_cmp): New routine. Inline expansion
a call to str(n)cmp/memcmp.
* doc/invoke.texi (--param builtin-string-cmp-inline-length): New option.
* doc/invoke.texi (--param builtin-string-cmp-inline-length):
New option.
* params.def (BUILTIN_STRING_CMP_INLINE_LENGTH): New.
2018-07-13 Richard Earnshaw <rearnsha@arm.com>

5
gcc/expmed.c
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@ -6038,6 +6038,11 @@ emit_store_flag (rtx target, enum rtx_code code, rtx op0, rtx op1,
if (!HAVE_conditional_move)
return 0;
/* Do not turn a trapping comparison into a non-trapping one. */
if ((code != EQ && code != NE && code != UNEQ && code != LTGT)
&& flag_trapping_math)
return 0;
/* Try using a setcc instruction for ORDERED/UNORDERED, followed by a
conditional move. */
tem = emit_store_flag_1 (subtarget, first_code, op0, op1, mode, 0,