From: Stafford Horne <shorne@gmail.com>
Date: Sat, 18 Mar 2023 07:43:05 +0000 (+0900)
Subject: or1k: Do not clear existing FPU exceptions before updating
X-Git-Tag: basepoints/gcc-14~455
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=33fb1625992ba8180b42988e714460bcab08ca0f;p=thirdparty%2Fgcc.git

or1k: Do not clear existing FPU exceptions before updating

We should always carry the exceptions forward.  This bug was found when
working on testing glibc math tests, many tests were failing with
Overflow and Underflow flags not set.  This was traced to here.

libgcc/ChangeLog:

	* config/or1k/sfp-machine.h (FP_HANDLE_EXCEPTIONS): Remove
	statement clearing existing exceptions.
---

diff --git a/libgcc/config/or1k/sfp-machine.h b/libgcc/config/or1k/sfp-machine.h
index 162c6bc53262..c804270fb3cb 100644
--- a/libgcc/config/or1k/sfp-machine.h
+++ b/libgcc/config/or1k/sfp-machine.h
@@ -73,7 +73,6 @@ do {								\
 do {								\
   if (__builtin_expect (_fex, 0))				\
     {								\
-      _fpcsr &= ~FP_EX_ALL;					\
       _fpcsr |= _fex;						\
       __asm__ volatile ("l.mtspr r0,%0,20" : : "r" (_fpcsr));	\
     }								\