* doc/invoke.texi (NS32K Options): Document -mieee-compare option

        * config/ns32k/ns32k.md (addsi3, *frame_addr, *stack_addr): merge
        into addsi3 using register class "x" and "y".

        * config/ns32k/ns32k.md (*madddf, *maddsf, *msubdf, *msubsf):
        "earlyclobber" constraint modifier for some alternative.

        * config/ns32k/ns32k.md (tstdf, tstsf, cmpdf, cmpsf, blt, ble)
        (*ble, *blt): Flag to indicate bCOND and sCOND should check for
        unordered.
        config/ns32k/ns32k.h (CC_UNORD): define corresponding mask.

        * config/ns32k/ns32k.h (TARGET_IEEE_COMPARE, MASK_IEEE_COMPARE)
        (TARGET_SWITCHES): Add -mieee-compare option.
        (OVERRIDE_OPTIONS): 32332 is a subset of
        32532. Don't use IEEE_COMPARE -funsafe-math-optimizations.
        (TARGET_SWITCHES): Fix description of bitfield option.
        * config/ns32k/netbsd.h (TARGET_DEFAULT): Add
        -mieee-compare option. Remove 32332 flag.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@55489 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 9 insertions, 0 deletions

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index eae04a40e1f..6497fe38b38 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -8698,6 +8698,15 @@ Do not try and generate multiply-add floating point instructions
 Generate output containing library calls for floating point.
 @strong{Warning:} the requisite libraries may not be available.
 
+@item -mieee-compare
+@itemx -mno-ieee-compare
+@opindex mieee-compare
+@opindex mno-ieee-compare
+Control whether or not the compiler uses IEEE floating point
+comparisons.  These handle correctly the case where the result of a
+comparison is unordered.
+@strong{Warning:} the requisite kernel support may not be available.
+
 @item -mnobitfield
 @opindex mnobitfield
 Do not use the bit-field instructions.  On some machines it is faster to