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[PowerPC] Fix PR25572, -mminimal-toc trashes r30
- From: Alan Modra <amodra at bigpond dot net dot au>
- To: gcc-patches at gcc dot gnu dot org
- Cc: David Edelsohn <dje at watson dot ibm dot com>
- Date: Wed, 28 Dec 2005 15:47:18 +1030
- Subject: [PowerPC] Fix PR25572, -mminimal-toc trashes r30
This patch updates regs_ever_live so that the prologue/epilogue code
knows about use of the TOC register created during reload. Bootstrapped
and regression tested powerpc64-linux. OK mainline? OK for 4.1, 4.0
and 3.4 too, after I bootstrap there?
PR target/25572
* config/rs6000/rs6000.c (create_TOC_reference): Set regs_ever_live.
Index: gcc/config/rs6000/rs6000.c
===================================================================
--- gcc/config/rs6000/rs6000.c (revision 109087)
+++ gcc/config/rs6000/rs6000.c (working copy)
@@ -13499,6 +13499,8 @@ uses_TOC (void)
rtx
create_TOC_reference (rtx symbol)
{
+ if (no_new_pseudos)
+ regs_ever_live[TOC_REGISTER] = 1;
return gen_rtx_PLUS (Pmode,
gen_rtx_REG (Pmode, TOC_REGISTER),
gen_rtx_CONST (Pmode,
--
Alan Modra
IBM OzLabs - Linux Technology Centre