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Re: delete LIBCALL note after split
- From: Sa Liu <SALIU at de dot ibm dot com>
- To: Ian Lance Taylor <iant at google dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Fri, 3 Aug 2007 18:09:07 +0200
- Subject: Re: delete LIBCALL note after split
Ian Lance Taylor <iant@google.com> wrote on 03.08.2007 17:24:45:
> Thanks. The general idea looks right, but the implementation is
> incorrect.
>
Thank you! I have made the correction:
Index: gcc/emit-rtl.c
===================================================================
--- gcc.orig/emit-rtl.c
+++ gcc/emit-rtl.c
@@ -3121,7 +3121,7 @@ try_split (rtx pat, rtx trial, int last)
rtx before = PREV_INSN (trial);
rtx after = NEXT_INSN (trial);
int has_barrier = 0;
- rtx tem;
+ rtx tem, note_retval;
rtx note, seq;
int probability;
rtx insn_last, insn;
@@ -3257,6 +3257,17 @@ try_split (rtx pat, rtx trial, int last)
break;
#endif
+ case REG_LIBCALL:
+ /* Relink the insns with REG_LIBCALL note and with REG_RETVAL note
+ after split. */
+ REG_NOTES (insn_last)
+ = gen_rtx_EXPR_LIST (REG_LIBCALL,
+ XEXP (note, 0),
+ REG_NOTES (insn_last));
+ note_retval = find_reg_note (XEXP (note, 0), REG_RETVAL,
NULL);
+ XEXP (note_retval, 0) = insn_last;
+ break;
+
default:
break;
}
Sa