diff mbox series

or1k: Update FPU to specify detect tininess before rounding

Message ID 20211021131859.1065675-1-shorne@gmail.com
State New
Headers show
Series or1k: Update FPU to specify detect tininess before rounding | expand

Commit Message

Stafford Horne Oct. 21, 2021, 1:18 p.m. UTC 
This was not defined in the spec and not consistent in the
implementation causing incosistent behavior.  After review we have
updated the CPU implementations and proposed the spec be updated to
specific that FPU tininess checks check for tininess before roudning.

Architecture change draft:

	https://openrisc.io/proposals/p18-fpu-tininess

libgcc/ChangeLog:

	* config/or1k/sfp-machine.h (_FP_TININESS_AFTER_ROUNDING):
	Change to 0.
---
 libgcc/config/or1k/sfp-machine.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/libgcc/config/or1k/sfp-machine.h b/libgcc/config/or1k/sfp-machine.h
index eebe5b0578e..162c6bc5326 100644
--- a/libgcc/config/or1k/sfp-machine.h
+++ b/libgcc/config/or1k/sfp-machine.h
@@ -85,7 +85,7 @@  do {								\
 
 #define __BYTE_ORDER __BIG_ENDIAN
 
-#define _FP_TININESS_AFTER_ROUNDING 1
+#define _FP_TININESS_AFTER_ROUNDING 0
 
 /* Define ALIASNAME as a strong alias for NAME.  */
 # define strong_alias(name, aliasname) _strong_alias(name, aliasname)