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[Bug rtl-optimization/70405] [6 Regression] -fcompare-debug failure with -mavx512f
- From: "ubizjak at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 25 Mar 2016 12:56:37 +0000
- Subject: [Bug rtl-optimization/70405] [6 Regression] -fcompare-debug failure with -mavx512f
- Auto-submitted: auto-generated
- References: <bug-70405-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70405
--- Comment #1 from UroÅ Bizjak <ubizjak at gmail dot com> ---
There is difference in _.optimized dump:
--- pr70405.c.211t.optimized 2016-03-25 13:54:01.942116037 +0100
+++ pr70405.c.gk.211t.optimized 2016-03-25 13:54:01.968115746 +0100
@@ -107,8 +107,10 @@
_70 = (unsigned int) _68;
_71 = _68 >> _70;
v.1_2 = {_11, _15, _19, _23, _27, _31, _35, _39, _43, _47, _51, _55, _59,
_63, _67, _71};
- _3 = VEC_PERM_EXPR <v.1_2, v.1_2, { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0 }>;
+ # DEBUG v => v.1_2
+ _3 = {_11, _11, _11, _11, _11, _11, _11, _11, _11, _11, _11, _11, _11, _11,
_11, _11};
v.2_4 = v.1_2 - _3;
+ # DEBUG v => v.2_4
_5 = BIT_FIELD_REF <v.2_4, 16, 48>;
_6 = (int) _5;
return _6;