From: Andrew Stubbs <ams@baylibre.com>
Date: Fri, 20 Jun 2025 16:43:37 +0000 (+0000)
Subject: amdgcn: allow SImode in VCC_HI [PR120722]
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=95752870fb5c51868a084b94705a83d728be52c8;p=thirdparty%2Fgcc.git

amdgcn: allow SImode in VCC_HI [PR120722]

This patch isn't fully tested yet, but it fixes the build failure, so that
will do for now.  SImode was not allowed in VCC_HI because there were issues,
way back before the port went upstream, so it's possible we'll find out what
those issues were again soon.

gcc/ChangeLog:

	PR target/120722
	* config/gcn/gcn.cc (gcn_hard_regno_mode_ok): Allow SImode in VCC_HI.
---

diff --git a/gcc/config/gcn/gcn.cc b/gcc/config/gcn/gcn.cc
index 31a59dd6f22..2d8dfa3232e 100644
--- a/gcc/config/gcn/gcn.cc
+++ b/gcc/config/gcn/gcn.cc
@@ -585,9 +585,8 @@ gcn_hard_regno_mode_ok (unsigned int regno, machine_mode mode)
     case XNACK_MASK_HI_REG:
     case TBA_HI_REG:
     case TMA_HI_REG:
-      return mode == SImode;
     case VCC_HI_REG:
-      return false;
+      return mode == SImode;
     case EXEC_HI_REG:
       return mode == SImode /*|| mode == V32BImode */ ;
     case SCC_REG: