From 881a89697e1604663cb76e32abab1c2419fbcbc8 Mon Sep 17 00:00:00 2001
From: Matthew Hiller <hiller@redhat.com>
Date: Fri, 10 Nov 2000 05:22:48 +0000
Subject: [PATCH] reload1.c (reload_combine): Fixed calculation of
first_index_reg, last_index_reg.
* reload1.c (reload_combine): Fixed calculation of
first_index_reg, last_index_reg.
From-SVN: r37360
---
gcc/ChangeLog | 5 +++++
gcc/reload1.c | 6 +++---
2 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8c6ed0ea79dd..15ccecbd516f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2000-11-09 Matthew Hiller <hiller@redhat.com>
+
+ * reload1.c (reload_combine): Fixed calculation of
+ first_index_reg, last_index_reg.
+
2000-11-09 Mark Mitchell <mark@codesourcery.com>
* c-dump.c (dequeue_and_dump): Dump function bodies.
diff --git a/gcc/reload1.c b/gcc/reload1.c
index 151529ada8e0..5219e8a09d2c 100644
--- a/gcc/reload1.c
+++ b/gcc/reload1.c
@@ -8363,7 +8363,7 @@ static void
reload_combine ()
{
rtx insn, set;
- int first_index_reg = 1, last_index_reg = 0;
+ int first_index_reg = -1, last_index_reg;
int i;
unsigned int r;
int last_label_ruid;
@@ -8381,14 +8381,14 @@ reload_combine ()
for (r = 0; r < FIRST_PSEUDO_REGISTER; r++)
if (TEST_HARD_REG_BIT (reg_class_contents[INDEX_REG_CLASS], r))
{
- if (! first_index_reg)
+ if (first_index_reg == -1)
first_index_reg = r;
last_index_reg = r;
}
/* If no index register is available, we can quit now. */
- if (first_index_reg > last_index_reg)
+ if (first_index_reg == -1)
return;
/* Set up LABEL_LIVE and EVER_LIVE_AT_START. The register lifetime
--
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