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[Bug c/65629] New: valgrind error in move_spill_restore
- From: "dcb314 at hotmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 30 Mar 2015 13:11:29 +0000
- Subject: [Bug c/65629] New: valgrind error in move_spill_restore
- Auto-submitted: auto-generated
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65629
Bug ID: 65629
Summary: valgrind error in move_spill_restore
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Created attachment 35183
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35183&action=edit
C source code
The attached code, when compiled by gcc trunk dated 20150329
under valgrind, and flag -O2, does this
==20644== Conditional jump or move depends on uninitialised value(s)
==20644== at 0xA08BDC: move_spill_restore (ira-color.c:3396)
==20644== by 0xA08BDC: color (ira-color.c:4736)
==20644== by 0xA08BDC: ira_color() (ira-color.c:4848)
==20644== by 0x9E92BF: ira (ira.c:5267)
ira-color.c:3396 is
|| (hard_regno = ALLOCNO_HARD_REGNO (a)) < 0