From 9e8b2461bd1f8b308ca1d0fe406e46a97822316c Mon Sep 17 00:00:00 2001
From: Richard Kenner <kenner@gcc.gnu.org>
Date: Tue, 15 Nov 1994 19:33:56 -0500
Subject: [PATCH] (relax_delay_slots): When invert a conditional jump over a
single unconditional jump...
(relax_delay_slots): When invert a conditional jump over a single
unconditional jump, invert the INSN_FROM_TARGET_P bit of insns in the
delay slots.
From-SVN: r8452
---
gcc/reorg.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/gcc/reorg.c b/gcc/reorg.c
index ec21a3503824..cd7d6528f24b 100644
--- a/gcc/reorg.c
+++ b/gcc/reorg.c
@@ -3972,6 +3972,17 @@ relax_delay_slots (first)
if (invert_jump (delay_insn, label))
{
+ int i;
+
+ /* Must update the INSN_FROM_TARGET_P bits now that
+ the branch is reversed, so that mark_target_live_regs
+ will handle the delay slot insn correctly. */
+ for (i = 1; i < XVECLEN (PATTERN (insn), 0); i++)
+ {
+ rtx slot = XVECEXP (PATTERN (insn), 0, i);
+ INSN_FROM_TARGET_P (slot) = ! INSN_FROM_TARGET_P (slot);
+ }
+
delete_insn (next);
next = insn;
}
--
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