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[Bug bootstrap/44921] [4.6 Regression] Failed to bootstrap
- From: "hjl dot tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 12 Jul 2010 18:46:33 -0000
- Subject: [Bug bootstrap/44921] [4.6 Regression] Failed to bootstrap
- References: <bug-44921-682@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #1 from hjl dot tools at gmail dot com 2010-07-12 18:46 -------
This patch:
Index: postreload.c
===================================================================
--- postreload.c (revision 162085)
+++ postreload.c (working copy)
@@ -1281,7 +1281,7 @@ move2add_use_add3_insn (rtx reg, rtx sym
rtx src = SET_SRC (pat);
int regno = REGNO (reg);
int min_cost = INT_MAX;
- int min_regno;
+ int min_regno = -1;
bool speed = optimize_bb_for_speed_p (BLOCK_FOR_INSN (insn));
int i;
@@ -1317,7 +1317,7 @@ move2add_use_add3_insn (rtx reg, rtx sym
}
}
- if (min_cost < rtx_cost (src, SET, speed))
+ if (min_regno >= 0 && min_cost < rtx_cost (src, SET, speed))
{
rtx tem;
works for me.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44921