https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112374
--- Comment #36 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Actually, while i386-expand.o compilation fails with -fcompare-debug even after
the above patch, seems that is only because of the discriminator issue, the
*.gkd difference is then:
--- i386-expand.cc.gkd 2023-11-16 09:57:22.666238096 +0100
+++ i386-expand.gk.cc.gkd 2023-11-16 09:59:09.207704622 +0100
@@ -245675,14 +245675,14 @@ Declarations used by ix86_expand_vector_
(note # 0 0 NOTE_INSN_DELETED)
(insn:TI # 0 0 11 (set (reg:QI 0 ax [360])
(mem:QI (plus:DI (reg/f:DI 0 ax [orig:192 rt ] [192])
- (const_int 3 [0x3])) [ MEM <unsigned char> [(struct rtx_def
*)tmp_295 + 3B]+0 S1 A8])) "../../gcc/config/i386/i386-expand.cc":17709:451
discrim 6# {*movqi_internal}
+ (const_int 3 [0x3])) [ MEM <unsigned char> [(struct rtx_def
*)tmp_295 + 3B]+0 S1 A8])) "../../gcc/config/i386/i386-expand.cc":17709:451
discrim 5# {*movqi_internal}
(nil))
(insn:TI # 0 0 11 (parallel [
(set (reg:SI 0 ax [360])
(and:SI (reg:SI 0 ax [360])
(const_int -29 [0xffffffffffffffe3])))
(clobber (reg:CC 17 flags))
- ]) "../../gcc/config/i386/i386-expand.cc":17709:451 discrim 6#
{*andsi_1}
+ ]) "../../gcc/config/i386/i386-expand.cc":17709:451 discrim 5#
{*andsi_1}
(expr_list:REG_UNUSED (reg:CC 17 flags)
(nil)))
(insn:TI # 0 0 11 (parallel [
@@ -245690,12 +245690,12 @@ Declarations used by ix86_expand_vector_
(ior:SI (reg:SI 0 ax [360])
(const_int 24 [0x18])))
(clobber (reg:CC 17 flags))
- ]) "../../gcc/config/i386/i386-expand.cc":17709:451 discrim 6#
{*iorsi_1}
+ ]) "../../gcc/config/i386/i386-expand.cc":17709:451 discrim 5#
{*iorsi_1}
(expr_list:REG_UNUSED (reg:CC 17 flags)
(nil)))
(insn:TI # 0 0 11 (set (mem:QI (plus:DI (reg/v/f:DI 3 bx [orig:192 rt ] [192])
(const_int 3 [0x3])) [ MEM <unsigned char> [(struct rtx_def
*)tmp_295 + 3B]+0 S1 A8])
- (reg:QI 0 ax [362])) "../../gcc/config/i386/i386-expand.cc":17709:451
discrim 6# {*movqi_internal}
+ (reg:QI 0 ax [362])) "../../gcc/config/i386/i386-expand.cc":17709:451
discrim 5# {*movqi_internal}
(expr_list:REG_DEAD (reg:QI 0 ax [362])
(nil)))
(jump_insn # 0 0 11 (set (pc)
So, this should no longer fail normal bootstrap comparison (but of course fail
-fcompare-debug bootstrap). And with -fcompare-debug -gno-statement-frontiers
it compiles fine.
