Currently gcc does not emit wf{c,k}* instructions when comparing long
double values. Middle-end actually adds them in the first place, but
then veclower pass replaces them with floating point register pair
operations, because the corresponding expander is missing.
gcc/ChangeLog:
2019-08-09 Ilya Leoshkevich <i...@linux.ibm.com>
PR target/77918
* config/s390/vector.md (V_HW): Add V1TI in order to make
vcond$a$b generate vcondv1tiv1tf.
---
gcc/config/s390/vector.md | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/config/s390/vector.md b/gcc/config/s390/vector.md
index 8a0b01f562b..2c2c56f7835 100644
--- a/gcc/config/s390/vector.md
+++ b/gcc/config/s390/vector.md
@@ -29,7 +29,7 @@
; All modes directly supported by the hardware having full vector reg size
; V_HW2 is duplicate of V_HW for having two iterators expanding
; independently e.g. vcond
-(define_mode_iterator V_HW [V16QI V8HI V4SI V2DI V2DF (V4SF "TARGET_VXE")
(V1TF "TARGET_VXE")])
+(define_mode_iterator V_HW [V16QI V8HI V4SI V2DI (V1TI "TARGET_VXE") V2DF
(V4SF "TARGET_VXE") (V1TF "TARGET_VXE")])
(define_mode_iterator V_HW2 [V16QI V8HI V4SI V2DI V2DF (V4SF "TARGET_VXE")
(V1TF "TARGET_VXE")])
(define_mode_iterator V_HW_64 [V2DI V2DF])
--
2.23.0
