From: Pan Li <[email protected]>
Like vwmacc[u].vx, allow the rvv register overlap for the undef
form of the dual widen ternary vx insn vwmaccu.vx. The undef form
comes from the combine of the vec_duplicate and the vwmaccu.vv
instead of the intrinsic. After that, all the dual widen ternary
vx insns are able to overlap.
gcc/ChangeLog:
* config/riscv/vector.md: Leverage Wvr constraint.
Signed-off-by: Pan Li <[email protected]>
---
gcc/config/riscv/vector.md | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/gcc/config/riscv/vector.md b/gcc/config/riscv/vector.md
index bbdbe8eddd1..e760f708faf 100644
--- a/gcc/config/riscv/vector.md
+++ b/gcc/config/riscv/vector.md
@@ -9181,24 +9181,24 @@ (define_expand "@pred_mul_plus_vx<mode>"
})
(define_insn "*pred_widen_mul_plus_u_vx<mode>_undef"
- [(set (match_operand:VWEXTI 0 "register_operand"
"=&vr")
+ [(set (match_operand:VWEXTI 0 "register_operand"
"=vr, vd")
(if_then_else:VWEXTI
(unspec:<VM>
- [(match_operand:<VM> 1 "vector_mask_operand"
"vmWc1")
- (match_operand 6 "vector_length_operand" "
rvl")
- (match_operand 7 "const_int_operand" "
i")
- (match_operand 8 "const_int_operand" "
i")
- (match_operand 9 "const_int_operand" "
i")
+ [(match_operand:<VM> 1 "vector_mask_operand" "Wc1,
vm")
+ (match_operand 6 "vector_length_operand"
"rvl,rvl")
+ (match_operand 7 "const_int_operand" " i,
i")
+ (match_operand 8 "const_int_operand" " i,
i")
+ (match_operand 9 "const_int_operand" " i,
i")
(reg:SI VL_REGNUM)
(reg:SI VTYPE_REGNUM)] UNSPEC_VPREDICATE)
(plus:VWEXTI
(mult:VWEXTI
(zero_extend:VWEXTI
(vec_duplicate:<V_DOUBLE_TRUNC>
- (match_operand:<VSUBEL> 3 "register_operand" "
rJ")))
+ (match_operand:<VSUBEL> 3 "register_operand" " rJ,
rJ")))
(zero_extend:VWEXTI
- (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "
vr")))
- (match_operand:VWEXTI 5 "register_operand" "
0"))
+ (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand"
"Wvr,Wvr")))
+ (match_operand:VWEXTI 5 "register_operand" " 0,
0"))
(match_operand:VWEXTI 2 "vector_undef_operand")))]
"TARGET_VECTOR"
"vwmaccu.vx\t%0,%z3,%4%p1"
--
2.43.0
