From: Andrew Stubbs <ams@codesourcery.com>
Date: Tue, 28 Apr 2020 19:48:51 +0000 (+0100)
Subject: amdgcn: use unsigned extend for lshiftrt
X-Git-Tag: releases/gcc-10.2.0~207
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8a3453786c3c2d6343c5258e564ad139d5ad116f;p=thirdparty%2Fgcc.git

amdgcn: use unsigned extend for lshiftrt

This fixes a wrong-code logic error in a previous patch.
Detected by gcc.c-torture/execute/pr53645-2.c.

	gcc/
	* config/gcn/gcn-valu.md (v<expander><mode>3): Fix unsignedp.

(cherry picked from commit b8db70e1f1cea312888470e1911c7b5e32333c61)
---

diff --git a/gcc/config/gcn/gcn-valu.md b/gcc/config/gcn/gcn-valu.md
index dd55c08dae47..6d7fecaa12c2 100644
--- a/gcc/config/gcn/gcn-valu.md
+++ b/gcc/config/gcn/gcn-valu.md
@@ -2113,7 +2113,7 @@
   ""
   {
     enum {ashift, lshiftrt, ashiftrt};
-    bool unsignedp = (<code> == ashift || <code> == ashiftrt);
+    bool unsignedp = (<code> == lshiftrt);
     rtx insi1 = gen_reg_rtx (<VnSI>mode);
     rtx insi2 = gen_reg_rtx (<VnSI>mode);
     rtx outsi = gen_reg_rtx (<VnSI>mode);