Test case:
void block_diffs_C(int *ss, int *new, int ns, int *newp) {
int x, y, s = 0;
for (x = 0; x < 8; x++) {
newp = new++;
for (y = 0; y < 4; y++)
s += *newp++;
*ss = s;
}
}
With GNU C version 4.1.0 20050810 (experimental) (alphaev68-unknown-linux-gnu)
at -O3, I get:
363.c: In function 'block_diffs_C':
363.c:1: internal compiler error: tree check: expected ssa_name, have error_mark
in verify_ssa, at tree-ssa.c:746
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
-fno-ivopts makes it go away.
--
Summary: [4.0 regression] ICE with ivopts
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P2
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: falk at debian dot org
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23509
