df_insn_refs_record's handling of global_regs[]

[David Miller]

From: David Miller <davem@davemloft.net>
Date: Tue, 16 Oct 2007 23:04:22 -0700 (PDT)

> I will do some regression testing of the following patch against
> gcc-4.2.x:
> 
> --- ./gcc/df-scan.c.ORIG	2007-10-16 02:07:46.000000000 -0700
> +++ ./gcc/df-scan.c	2007-10-16 23:00:32.000000000 -0700
> @@ -1584,12 +1584,19 @@ df_insn_refs_record (struct dataflow *df

No regressions on sparc-unknown-linux and sparc64-unknown-linux