[VE] Add missing vector regression test

I forgot to add a regression test for VMAXX instruction when I added
it.  So, I'm adding it now.

Reviewed By: simoll

Differential Revision: https://reviews.llvm.org/D90356

Author: kaz7

llvm/test/MC/VE/VMAXX.s

@@ -0,0 +1,28 @@
+# RUN: llvm-mc -triple=ve --show-encoding < %s \
+# RUN:     | FileCheck %s --check-prefixes=CHECK-ENCODING,CHECK-INST
+# RUN: llvm-mc -triple=ve -filetype=obj < %s | llvm-objdump -d - \
+# RUN:     | FileCheck %s --check-prefixes=CHECK-INST
+
+# CHECK-INST: vrmaxs.l.fst %v11, %v12
+# CHECK-ENCODING: encoding: [0x00,0x00,0x0c,0x0b,0x00,0x00,0x00,0xab]
+vrmaxs.l.fst %v11, %v12
+
+# CHECK-INST: vrmaxs.l.fst %v11, %vix, %vm11
+# CHECK-ENCODING: encoding: [0x00,0x00,0xff,0x0b,0x00,0x00,0x0b,0xab]
+vrmaxs.l.fst %v11, %vix, %vm11
+
+# CHECK-INST: vrmaxs.l.lst %vix, %v22, %vm15
+# CHECK-ENCODING: encoding: [0x00,0x00,0x16,0xff,0x00,0x00,0x2f,0xab]
+vrmaxs.l.lst %vix, %v22, %vm15
+
+# CHECK-INST: vrmins.l.lst %v63, %v60, %vm2
+# CHECK-ENCODING: encoding: [0x00,0x00,0x3c,0x3f,0x00,0x00,0x32,0xab]
+vrmins.l.lst %v63, %v60, %vm2
+
+# CHECK-INST: vrmins.l.fst %vix, %vix
+# CHECK-ENCODING: encoding: [0x00,0x00,0xff,0xff,0x00,0x00,0x10,0xab]
+vrmins.l.fst %vix, %vix, %vm0
+
+# CHECK-INST: vrmins.l.lst %vix, %vix, %vm2
+# CHECK-ENCODING: encoding: [0x00,0x00,0xff,0xff,0x00,0x00,0x32,0xab]
+vrmins.l.lst %vix, %vix, %vm2