From: kettenis <kettenis@openbsd.org>
Date: Sun, 19 Nov 2023 16:42:05 +0000 (+0000)
Subject: Disable LOAD_STACK_GUARD on OpenBSD/armv7.  It seems the implementation
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=cdd3ff7c9bd29161e0ca09d6887cf4598c727e30;p=openbsd

Disable LOAD_STACK_GUARD on OpenBSD/armv7.  It seems the implementation
is incomplete resulting in SIGSEGV with the OpenBSD default options.

ok deraadt@, jsg@
---

diff --git a/gnu/llvm/llvm/lib/Target/ARM/ARMISelLowering.cpp b/gnu/llvm/llvm/lib/Target/ARM/ARMISelLowering.cpp
index 2e78b52d099..200d450537b 100644
--- a/gnu/llvm/llvm/lib/Target/ARM/ARMISelLowering.cpp
+++ b/gnu/llvm/llvm/lib/Target/ARM/ARMISelLowering.cpp
@@ -21198,6 +21198,8 @@ bool ARMTargetLowering::shouldInsertFencesForAtomic(
 }
 
 bool ARMTargetLowering::useLoadStackGuardNode() const {
+  if (Subtarget->getTargetTriple().isOSOpenBSD())
+    return false;
   // ROPI/RWPI are not supported currently.
   return !Subtarget->isROPI() && !Subtarget->isRWPI();
 }