From c2618f0522459c99f2cbf8a300e3c8f5ded6f12f Mon Sep 17 00:00:00 2001 From: Doug Evans Date: Fri, 24 Sep 1993 19:49:18 +0000 Subject: [PATCH] local-alloc.c: (find_free_reg): Make sure we will always be able to eliminate... * local-alloc.c: (find_free_reg): Make sure we will always be able to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. From-SVN: r5460 --- gcc/local-alloc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/gcc/local-alloc.c b/gcc/local-alloc.c index 00c06e8..d626fd7 100644 --- a/gcc/local-alloc.c +++ b/gcc/local-alloc.c @@ -1945,6 +1945,11 @@ find_free_reg (class, mode, qty, accept_call_clobbered, just_try_suggested, #ifdef ELIMINABLE_REGS for (i = 0; i < sizeof eliminables / sizeof eliminables[0]; i++) SET_HARD_REG_BIT (used, eliminables[i].from); +#if FRAME_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM + /* If FRAME_POINTER_REGNUM is not a real register, then protect the one + that it might be eliminated into. */ + SET_HARD_REG_BIT (used, HARD_FRAME_POINTER_REGNUM); +#endif #else SET_HARD_REG_BIT (used, FRAME_POINTER_REGNUM); #endif -- 2.7.4