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From: "aldyh at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/115009] [15 regression] AVR: ICE in alloc, at
 value-range-storage.cc:598
Date: Thu, 09 May 2024 21:47:49 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D115009

--- Comment #11 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
(In reply to Jeffrey A. Law from comment #8)
> And on msp430-elf we're getting a codegen correctness issue on msp430-elf=
.=20
> gcc.dg/pr66444.c fails in the simulator.  The -O2 code difference looks l=
ike:
>=20
> *** good.s      Thu May  9 20:41:37 2024
> --- bad.s       Thu May  9 20:41:44 2024
> *************** baz:
> *** 73,81 ****
>   ; saved regs:(none)
>         ; start of prologue
>         ; end of prologue
> !       MOV.W   #2062, R12
>         CALL    #fn1
> !       MOV.W   #2062, R12
>         CALL    #fn2
>         MOV.B   #0, R12
>         ; start of epilogue
> --- 73,81 ----
>   ; saved regs:(none)
>         ; start of prologue
>         ; end of prologue
> !       MOV.B   #0, R12
>         CALL    #fn1
> !       MOV.B   #0, R12
>         CALL    #fn2
>         MOV.B   #0, R12
>         ; start of epilogue
>=20
>=20
> We're mucking up the pointer that baz() passes down to fn1 and fn2 I thin=
k.

Hmmm, this may be something different.  I can look at it tomorrow.=