[Bug rtl-optimization/119174] [15 Regression] IRA allocating value live across a call to call clobbered register

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119174

--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Commenting out TARGET_LRA_P in msp430.cc and gets us code that works:
```
.L2:
        CMP.W   R9, R10 { JL    .L3
        ; start of epilogue
        ADD.W   #2, R1
        POPM.W  #2, r10
        RET
.L3:
        MOV.W   @R13+, R14
        MOV.W   R13, @R1
        CALL    R14
        ADD.W   #1, R10
        MOV.W   @R1, R13
        BR      #.L2

```

Not the best code as it should have been in R1 in the first place but code that
definitely works.