From: John David Anglin <danglin@gcc.gnu.org>
Date: Tue, 12 Nov 2024 19:26:08 +0000 (-0500)
Subject: hppa: Fix decrement_and_branch_until_zero constraint
X-Git-Tag: basepoints/gcc-16~4375
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=b59c4b1803fca7cd66c27e8a82f89f7c10264f34;p=thirdparty%2Fgcc.git

hppa: Fix decrement_and_branch_until_zero constraint

The third alternative for argument 4 needs to be an early clobber
constraint.  Noticed testing LRA.

2024-11-12  John David Anglin  <danglin@gcc.gnu.org>

gcc/ChangeLog:

	* config/pa/pa.md (decrement_and_branch_until_zero): Fix
	constraint.
---

diff --git a/gcc/config/pa/pa.md b/gcc/config/pa/pa.md
index bf59b7f601e6..360198e9d087 100644
--- a/gcc/config/pa/pa.md
+++ b/gcc/config/pa/pa.md
@@ -9567,7 +9567,7 @@ add,l %2,%3,%3\;bv,n %%r0(%3)"
 	  (pc)))
    (set (match_dup 0)
 	(plus:SI (match_dup 0) (match_dup 1)))
-   (clobber (match_scratch:SI 4 "=X,r,r"))]
+   (clobber (match_scratch:SI 4 "=X,r,&r"))]
   ""
   "* return pa_output_dbra (operands, insn, which_alternative); "
 ;; Do not expect to understand this the first time through.