From 0a514f47b835740bc283e61541883a2793d4af1f Mon Sep 17 00:00:00 2001
From: Walter Lee <walt@tilera.com>
Date: Wed, 27 Mar 2013 06:18:49 +0000
Subject: [PATCH] tilegx.c (tilegx_expand_prologue): Avoid double-decrement of
next_scratch_regno.
* config/tilegx/tilegx.c (tilegx_expand_prologue): Avoid
double-decrement of next_scratch_regno.
From-SVN: r197139
---
gcc/ChangeLog | 5 +++++
gcc/config/tilegx/tilegx.c | 9 ++++-----
2 files changed, 9 insertions(+), 5 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 919d3d720ab4..519cce0de82b 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2013-03-27 Walter Lee <walt@tilera.com>
+
+ * config/tilegx/tilegx.c (tilegx_expand_prologue): Avoid
+ double-decrement of next_scratch_regno.
+
2013-03-27 Walter Lee <walt@tilera.com>
* config/tilegx/tilegx.md (insn_v1mulu): Fix constraints on
diff --git a/gcc/config/tilegx/tilegx.c b/gcc/config/tilegx/tilegx.c
index 9f2aad5eb38f..beb1012cf2c6 100644
--- a/gcc/config/tilegx/tilegx.c
+++ b/gcc/config/tilegx/tilegx.c
@@ -3999,11 +3999,10 @@ tilegx_expand_prologue (void)
if (r == NULL_RTX)
{
- rtx p = compute_frame_addr (offset, &next_scratch_regno);
- r = gen_rtx_REG (Pmode, next_scratch_regno--);
- reg_save_addr[which_scratch] = r;
-
- emit_insn (gen_rtx_SET (VOIDmode, r, p));
+ int prev_scratch_regno = next_scratch_regno;
+ r = compute_frame_addr (offset, &next_scratch_regno);
+ if (prev_scratch_regno != next_scratch_regno)
+ reg_save_addr[which_scratch] = r;
}
else
{
--
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