[Bug tree-optimization/115009] [15 regression] AVR: ICE in alloc, at value-range-storage.cc:598

[law at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115009

--- Comment #8 from Jeffrey A. Law <law at gcc dot gnu.org> ---
And on msp430-elf we're getting a codegen correctness issue on msp430-elf. 
gcc.dg/pr66444.c fails in the simulator.  The -O2 code difference looks like:

*** 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


We're mucking up the pointer that baz() passes down to fn1 and fn2 I think.