From ce73761f15fce4c1e116ca3975db3443ac5013ef Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@redhat.com>
Date: Sat, 28 Oct 2000 22:41:44 -0700
Subject: [PATCH] regrename.c (scan_rtx_address): Frob action, not class, when
trying to disable optimization.
* regrename.c (scan_rtx_address): Frob action, not class,
when trying to disable optimization.
From-SVN: r37117
---
gcc/ChangeLog | 5 +++++
gcc/regrename.c | 4 +++-
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 876b6671bafa..9472fa0df4c0 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2000-10-28 Richard Henderson <rth@redhat.com>
+
+ * regrename.c (scan_rtx_address): Frob action, not class,
+ when trying to disable optimization.
+
2000-10-28 Mark Mitchell <mark@codesourcery.com>
* c-semantics.c (make_rtl_for_local_static): Don't clobber
diff --git a/gcc/regrename.c b/gcc/regrename.c
index ffe6d422b390..5078585647ee 100644
--- a/gcc/regrename.c
+++ b/gcc/regrename.c
@@ -475,7 +475,9 @@ scan_rtx_address (insn, loc, class, action, mode)
case PRE_DEC:
case PRE_MODIFY:
#ifndef AUTO_INC_DEC
- class = NO_REGS;
+ /* If the target doesn't claim to handle autoinc, this must be
+ something special, like a stack push. Kill this chain. */
+ action = terminate_all_read;
#endif
break;
--
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