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PATCH: PR bootstrap/66978: [6 Regression] bootstrap failure with --with-multilib-list=m32,m64,mx32
- From: "H.J. Lu" <hongjiu dot lu at intel dot com>
- To: gcc-patches at gcc dot gnu dot org
- Cc: Alexandre Oliva <aoliva at redhat dot com>
- Date: Fri, 24 Jul 2015 07:46:26 -0700
- Subject: PATCH: PR bootstrap/66978: [6 Regression] bootstrap failure with --with-multilib-list=m32,m64,mx32
- Authentication-results: sourceware.org; auth=none
- Reply-to: "H.J. Lu" <hjl dot tools at gmail dot com>
Hi,
Static chain returned from get_rtl_for_parm_ssa_default_def may not
have Pmode. This patch converts static chain to Pmode if needed.
Tested on Linux/x86-64. OK for trunk?
Thanks.
H.J.
---
2015-07-24 H.J. Lu <hongjiu.lu@intel.com>
PR bootstrap/66978
* function.c (expand_function_start): Convert static chain to
Pmode if needed.
diff --git a/gcc/function.c b/gcc/function.c
index c3d00cd..f63c9be 100644
--- a/gcc/function.c
+++ b/gcc/function.c
@@ -5207,6 +5207,10 @@ expand_function_start (tree subr)
SET_DECL_RTL (parm, local);
mark_reg_pointer (local, TYPE_ALIGN (TREE_TYPE (TREE_TYPE (parm))));
+ if (GET_MODE (local) != Pmode)
+ local = convert_to_mode (Pmode, local,
+ TYPE_UNSIGNED (TREE_TYPE (parm)));
+
insn = emit_move_insn (local, chain);
/* Mark the register as eliminable, similar to parameters. */