Hi,
unroll does not copy CONST_OR_PURE flag when duplicating insns causing
BB boundary in the middle of libcall and eventually makes us to mess up
everything. Regtested, bootstrapped with -funroll-loops and installed
as obvious.
Mon Dec 2 20:25:56 CET 2002 Jan Hubicka <jh@suse.cz>
* unroll.c (copy_loop_body): Copy CONST_OR_PURE_CALL_P.
Index: unroll.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/unroll.c,v
retrieving revision 1.183
diff -c -3 -p -r1.183 unroll.c
*** unroll.c 27 Oct 2002 14:47:55 -0000 1.183
--- unroll.c 2 Dec 2002 19:25:53 -0000
*************** copy_loop_body (loop, copy_start, copy_e
*** 2214,2219 ****
--- 2214,2220 ----
REG_NOTES (copy) = initial_reg_note_copy (REG_NOTES (insn), map);
INSN_SCOPE (copy) = INSN_SCOPE (insn);
SIBLING_CALL_P (copy) = SIBLING_CALL_P (insn);
+ CONST_OR_PURE_CALL_P (new) = CONST_OR_PURE_CALL_P (insn);