From dfc107627c31c493e4ed089aea79bc398738a27b Mon Sep 17 00:00:00 2001
From: Segher Boessenkool <segher@kernel.crashing.org>
Date: Thu, 15 Jun 2017 08:49:17 +0200
Subject: [PATCH] rs6000: Don't use REGNO in the add<mode>3 expander
The argument could be a subreg of reg instead, which means we have to
use reg_or_subregno instead of REGNO.
* config/rs6000/rs6000.md (add<mode>3): Use reg_or_subregno instead
of REGNO.
From-SVN: r249213
---
gcc/ChangeLog | 5 +++++
gcc/config/rs6000/rs6000.md | 2 +-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2d5110c8d86b..f460df6bd0de 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2017-06-15 Segher Boessenkool <segher@kernel.crashing.org>
+
+ * config/rs6000/rs6000.md (add<mode>3): Use reg_or_subregno instead
+ of REGNO.
+
2017-06-14 Maciej W. Rozycki <macro@imgtec.com>
* config/mips/mips.md (MIPS16_T_REGNUM): Remove constant.
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
index dedb2e3c1933..8e1b460ee814 100644
--- a/gcc/config/rs6000/rs6000.md
+++ b/gcc/config/rs6000/rs6000.md
@@ -1631,7 +1631,7 @@
/* Adding a constant to r0 is not a valid insn, so use a different
strategy in that case. */
- if (REGNO (operands[1]) == 0 || REGNO (tmp) == 0)
+ if (reg_or_subregno (operands[1]) == 0 || reg_or_subregno (tmp) == 0)
{
if (operands[0] == operands[1])
FAIL;
--
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