[LoongArch] Fix incorrect pattern XVREPL128VEI_{W/D} instructions

Remove the incorrect patterns for `XVREPL128VEI_{W/D}` instructions,
and add correct patterns for XVREPLVE0_{W/D} instructions

Author: wangleiat

llvm/lib/Target/LoongArch/LoongArchLASXInstrInfo.td

@@ -1571,11 +1571,11 @@ def : Pat<(loongarch_vreplve v8i32:$xj, GRLenVT:$rk),
 def : Pat<(loongarch_vreplve v4i64:$xj, GRLenVT:$rk),
           (XVREPLVE_D v4i64:$xj, GRLenVT:$rk)>;
 
-// XVREPL128VEI_{W/D}
+// XVREPLVE0_{W/D}
 def : Pat<(lasxsplatf32 FPR32:$fj),
-          (XVREPL128VEI_W (SUBREG_TO_REG (i64 0), FPR32:$fj, sub_32), 0)>;
+          (XVREPLVE0_W (SUBREG_TO_REG (i64 0), FPR32:$fj, sub_32))>;
 def : Pat<(lasxsplatf64 FPR64:$fj),
-          (XVREPL128VEI_D (SUBREG_TO_REG (i64 0), FPR64:$fj, sub_64), 0)>;
+          (XVREPLVE0_D (SUBREG_TO_REG (i64 0), FPR64:$fj, sub_64))>;
 
 // Loads/Stores
 foreach vt = [v32i8, v16i16, v8i32, v4i64, v8f32, v4f64] in {

llvm/test/CodeGen/LoongArch/lasx/build-vector.ll

@@ -57,7 +57,7 @@ define void @buildvector_v8f32_splat(ptr %dst, float %a0) nounwind {
 ; CHECK-LABEL: buildvector_v8f32_splat:
 ; CHECK:       # %bb.0: # %entry
 ; CHECK-NEXT:    # kill: def $f0 killed $f0 def $xr0
-; CHECK-NEXT:    xvrepl128vei.w $xr0, $xr0, 0
+; CHECK-NEXT:    xvreplve0.w $xr0, $xr0
 ; CHECK-NEXT:    xvst $xr0, $a0, 0
 ; CHECK-NEXT:    ret
 entry:
@@ -71,7 +71,7 @@ define void @buildvector_v4f64_splat(ptr %dst, double %a0) nounwind {
 ; CHECK-LABEL: buildvector_v4f64_splat:
 ; CHECK:       # %bb.0: # %entry
 ; CHECK-NEXT:    # kill: def $f0_64 killed $f0_64 def $xr0
-; CHECK-NEXT:    xvrepl128vei.d $xr0, $xr0, 0
+; CHECK-NEXT:    xvreplve0.d $xr0, $xr0
 ; CHECK-NEXT:    xvst $xr0, $a0, 0
 ; CHECK-NEXT:    ret
 entry: