The attached test case contains two equivalent functions. The second one
produces better code, because it has been manually CSE'd. The problem is that
fold-const is doing the conversion of 'a ==V1 || a == V2' (V2 == V1 + 1) into
'(a - V1) <= (V2 - V1)', but that can't be done until we spot that both RHS of
the && are identical.
Death to fold-const!
--
Summary: in range test not noticed
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: nathan at gcc dot gnu dot org
CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19104
