http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52856
Bug #: 52856
Summary: misuse of MODE_SIZE vice MODE_PRECISION in
get_mode_bounds
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: big...@acm.org
get_mode_bounds improperly uses GET_MODE_BITSIZE(mode) instead of
GET_MODE_PRECISION(mode) when calculating the minimal and maximal values. This
produces the wrong answer for a 20-bit PSImode, causing an ordered comparison
of a PSImode integer with zero to improperly fold to a constant in the
out-of-tree msp430 back-end.
