[Bug bootstrap/59985] stage2/3 compare error on lto-streamer-in.o

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59985

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |vmakarov at gcc dot gnu.org

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Seems it is LRA where things change.  First of all, with -g there is an extra
-  151: r0:SI=r151:SI
+    Split reuse change 151->260:
+   77: debug b => r260:SI
+ 10150: r0:SI=r151:SI
message in -fdump-rtl-reload-details dump (obviously, insn numbers are
different).
But, even when comparing say -g --param min-nondebug-insn-uid=100 dump with
-g --param min-nondebug-insn-uid=1000 dump I see more important change:
-        Choosing alt 4 in insn 336:  (0) &r  (1) 0  (2) De {*anddi3_insn}
-      Creating newreg=262 from oldreg=249, assigning class GENERAL_REGS to
r262
-  336: r262:DI=r262:DI&0x1
+        Choosing alt 5 in insn 10224:  (0) &r  (1) r  (2) De {*anddi3_insn}
+      Creating newreg=262 from oldreg=231, assigning class GENERAL_REGS to
r262
+ 10224: r249:DI=r262:DI&0x1