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PATCH: PR bootstrap/32764: [4.3 regression] : Failed to bootstrap on Linux/ia64
- From: "H.J. Lu" <hjl at lucon dot org>
- To: gcc-patches at gcc dot gnu dot org
- Cc: ctice at apple dot com
- Date: Fri, 13 Jul 2007 21:59:50 -0700
- Subject: PATCH: PR bootstrap/32764: [4.3 regression] : Failed to bootstrap on Linux/ia64
This patch checks NULL src before using REG_P (src). It works on
Linux/ia32, Linux/Intel64 and Linux/ia64.
H.J.
---
2007-07-13 H.J. Lu <hongjiu.lu@intel.com>
PR bootstrap/32764
* var-tracking.c (find_src_status): Check NULL src.
(find_src_set_src): Likewise.
--- gcc/var-tracking.c.bad 2007-07-13 19:38:08.000000000 -0700
+++ gcc/var-tracking.c 2007-07-13 20:24:27.000000000 -0700
@@ -1824,6 +1824,9 @@ find_src_status (dataflow_set *in, rtx l
src = SET_SRC (XVECEXP (PATTERN (insn), 0, i));
}
+ if (!src)
+ return status;
+
if (REG_P (src))
decl = var_debug_decl (REG_EXPR (src));
else if (MEM_P (src))
@@ -1862,6 +1865,9 @@ find_src_set_src (dataflow_set *set, rtx
src = SET_SRC (XVECEXP (PATTERN (insn), 0, i));
}
+ if (!src)
+ return set_src;
+
if (REG_P (src))
decl = var_debug_decl (REG_EXPR (src));
else if (MEM_P (src))