[Bug rtl-optimization/52356] New: expr.c:emit_move_multi_word() can overwrite address register
jon at beniston dot com
gcc-bugzilla@gcc.gnu.org
Thu Feb 23 16:44:00 GMT 2012
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52356
Bug #: 52356
Summary: expr.c:emit_move_multi_word() can overwrite address
register
Classification: Unclassified
Product: gcc
Version: 4.6.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: jon@beniston.com
expr.c:emit_move_multi_word() can copy multiple words from an address specified
by y to a sequence of registers starting at x
However, it seems this code doesn't check to make sure that the register used
for holding the address y, isn't in the destination registers, or if it is,
reorder the sequence of moves, so that the write to this register is the last
move performed.
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