add test for invpcid

Author: XinWang10

llvm/test/MC/Disassembler/X86/apx/invpcid.txt

@@ -1,6 +1,10 @@
 # RUN: llvm-mc --disassemble %s -triple=x86_64 | FileCheck %s --check-prefixes=ATT
 # RUN: llvm-mc --disassemble %s -triple=x86_64 -x86-asm-syntax=intel --output-asm-variant=1 | FileCheck %s --check-prefixes=INTEL
 
+# ATT:   invpcid	123(%rax,%rbx,4), %r9
+# INTEL: invpcid	r9, xmmword ptr [rax + 4*rbx + 123]
+0x62,0x74,0x7e,0x08,0xf2,0x4c,0x98,0x7b
+
 # ATT:   invpcid	291(%r28,%r29,4), %r19
 # INTEL: invpcid	r19, xmmword ptr [r28 + 4*r29 + 291]
 0x62,0x8c,0x7a,0x08,0xf2,0x9c,0xac,0x23,0x01,0x00,0x00

llvm/test/MC/X86/apx/invpcid-att.s

@@ -1,8 +1,12 @@
 # RUN: llvm-mc -triple x86_64 --show-encoding %s | FileCheck %s
 # RUN: not llvm-mc -triple i386 -show-encoding %s 2>&1 | FileCheck %s --check-prefix=ERROR
 
-# ERROR-COUNT-1: error:
+# ERROR-COUNT-2: error:
 # ERROR-NOT: error:
+# CHECK: {evex}	invpcid	123(%rax,%rbx,4), %r9
+# CHECK: encoding: [0x62,0x74,0x7e,0x08,0xf2,0x4c,0x98,0x7b]
+         {evex}	invpcid	123(%rax,%rbx,4), %r9
+
 # CHECK: invpcid	291(%r28,%r29,4), %r19
 # CHECK: encoding: [0x62,0x8c,0x7a,0x08,0xf2,0x9c,0xac,0x23,0x01,0x00,0x00]
          invpcid	291(%r28,%r29,4), %r19

llvm/test/MC/X86/apx/invpcid-intel.s

@@ -1,5 +1,9 @@
 # RUN: llvm-mc -triple x86_64 -x86-asm-syntax=intel -output-asm-variant=1 --show-encoding %s | FileCheck %s
 
+# CHECK: {evex}	invpcid	r9, xmmword ptr [rax + 4*rbx + 123]
+# CHECK: encoding: [0x62,0x74,0x7e,0x08,0xf2,0x4c,0x98,0x7b]
+         {evex}	invpcid	r9, xmmword ptr [rax + 4*rbx + 123]
+
 # CHECK: invpcid	r19, xmmword ptr [r28 + 4*r29 + 291]
 # CHECK: encoding: [0x62,0x8c,0x7a,0x08,0xf2,0x9c,0xac,0x23,0x01,0x00,0x00]
          invpcid	r19, xmmword ptr [r28 + 4*r29 + 291]