toplev.c (no_new_pseudos): Define.

        * toplev.c (no_new_pseudos): Define.
        (rest_of_compilation):  Set no_new_pseudos as needed.
        * emit-rtl.c (gen_reg_rtx): Abort if we try to create a new pseudo
        if no_new_pseudos is set.
        * rtl.h (no_new_pseudos): Declare it.
        * reload1.c (reload): Update comments.
        * md.texi: Corresponding changes.
        * reload1.c (reg_used_in_insn): Renamed from reg_used_by_pseudo.
        (choose_reload_regs): Rename it here as well.  When computing it,
        also merge in used hardregs.

From-SVN: r23855

1 files changed, 4 insertions, 0 deletions

diff --git a/gcc/rtl.h b/gcc/rtl.h
index 6c47f2f..c5b816d 100644
--- a/gcc/rtl.h
+++ b/gcc/rtl.h
@@ -1222,6 +1222,10 @@ extern int reload_in_progress;
    the same indirect address eventually.  */
 extern int cse_not_expected;
 
+/* Set to nonzero before life analysis to indicate that it is unsafe to
+   generate any new pseudo registers.  */
+extern int no_new_pseudos;
+
 /* Indexed by pseudo register number, gives the rtx for that pseudo.
    Allocated in parallel with regno_pointer_flag.  */
 extern rtx *regno_reg_rtx;