The attached patch fixes PR 101177.
Committed to master, cherry-picked to GCC-13, GCC-12 and GCC-11.
Sanity tested with 'make all-gcc'.
Cheers,
Oleg
gcc/ChangeLog:
PR target/101177
* config/sh/sh.md (unnamed split pattern): Fix comparison of
find_regno_note result.
From 3ce4e99303d01d348229cca22bf8d3dd63004e01 Mon Sep 17 00:00:00 2001
From: Oleg Endo <olege...@gcc.gnu.org>
Date: Fri, 20 Oct 2023 18:48:34 +0900
Subject: [PATCH] SH: Fix PR 101177
Fix accidentally inverted comparison.
gcc/ChangeLog:
PR target/101177
* config/sh/sh.md (unnamed split pattern): Fix comparison of
find_regno_note result.
---
gcc/config/sh/sh.md | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/config/sh/sh.md b/gcc/config/sh/sh.md
index 76e7774..93374c6 100644
--- a/gcc/config/sh/sh.md
+++ b/gcc/config/sh/sh.md
@@ -841,9 +841,9 @@
rtx reg = operands[0];
if (SUBREG_P (reg))
reg = SUBREG_REG (reg);
gcc_assert (REG_P (reg));
- if (find_regno_note (curr_insn, REG_DEAD, REGNO (reg)) != NULL_RTX)
+ if (find_regno_note (curr_insn, REG_DEAD, REGNO (reg)) == NULL_RTX)
FAIL;
/* FIXME: Maybe also search the predecessor basic blocks to catch
more cases. */
--
libgit2 1.3.2
