[Bug debug/25023] [4.1/4.2 Regression] ICE in def_cfa_1, at dwarf2out.c:792

[jakub at gcc dot gnu dot org]

------- Comment #14 from jakub at gcc dot gnu dot org  2005-12-09 20:13 -------
Created an attachment (id=10446)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10446&action=view)
gcc41-pr25023.patch

A new version of the patch.  While this bootstraps (at least on i386 I tried),
I'm getting some regressions though, particularly:
FAIL: gcc.dg/compat/scalar-by-value-4 c_compat_x_tst.o compile
FAIL: gcc.dg/compat/scalar-by-value-4 c_compat_y_tst.o compile
FAIL: gcc.dg/compat/scalar-return-4 c_compat_x_tst.o compile
FAIL: gcc.dg/compat/scalar-return-4 c_compat_y_tst.o compile
FAIL: gcc.dg/compat/struct-by-value-11 c_compat_x_tst.o compile
FAIL: gcc.dg/compat/struct-by-value-11 c_compat_y_tst.o compile

All seem to be ICEs in emit_move_resolve_push (CQI, [
(mem/i:CQI (pre_modify:SI (reg/f:SI 7 sp)
        (plus:SI (reg/f:SI 7 sp)
            (const_int -4 [0xfffffffc]))) [0 S2 A8])
]), where that function only handles PRE_{INC,DEC} and POST_{INC,DEC}, but
not PRE_MODIFY.  Will see if just handling {PRE,POST}_MODIFY is the right thing
there or if something different is wrong.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25023