From: Jeff Law <jlaw@ventanamicro.com>
Date: Sat, 22 Jul 2023 15:47:21 +0000 (-0600)
Subject: [committed] Fix length computation bug in bfin port
X-Git-Tag: basepoints/gcc-15~7413
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bb095e8a343db043a0cd0b0da9b2ab1186d1a1ed;p=thirdparty%2Fgcc.git

[committed] Fix length computation bug in bfin port

The tester seemed to occasionally ping-pong a compilation failure on the
builtin-bitops-1.c test.  I long suspected it was something like length
computations.

I finally got a few minutes to dig into it, and sure enough the blackfin
port was claiming the "ones" operation was 2 bytes when it is in fact 4 bytes.

This fixes the compilation failure for the builtin-bitops-1.c test.   Sadly,
it doesn't fix any of the other failures on the bfin port.

Committed to the trunk.

gcc/
	* config/bfin/bfin.md (ones): Fix length computation.
---

diff --git a/gcc/config/bfin/bfin.md b/gcc/config/bfin/bfin.md
index 9b5ab0717786..c6b174dc3bdd 100644
--- a/gcc/config/bfin/bfin.md
+++ b/gcc/config/bfin/bfin.md
@@ -1401,7 +1401,8 @@
 	 (popcount:SI (match_operand:SI 1 "register_operand" "d"))))]
   ""
   "%h0 = ONES %1;"
-  [(set_attr "type" "alu0")])
+  [(set_attr "type" "alu0")
+   (set_attr "length" "4")])
 
 (define_expand "popcountsi2"
   [(set (match_dup 2)