[X86][AVX] Add 'OK' tests cases for PR48877

(cherry picked from commit e951442)

Author: RKSimon

llvm/test/MC/Disassembler/X86/x86-64-avx.txt

@@ -0,0 +1,19 @@
+# RUN: llvm-mc --disassemble %s -triple=x86_64-apple-darwin9 | FileCheck %s
+
+# CHECK: vpackusdw (%rax), %xmm2, %xmm1
+0xc4 0xe2 0x69 0x2b 0x08
+
+# CHECK: vphsubd %xmm3, %xmm2, %xmm11
+0xc4 0x62 0x69 0x06 0xdb
+
+# CHECK: vpcmpestri $100, %xmm3, %xmm11
+0xc4 0x63 0x79 0x61 0xdb 0x64
+
+# CHECK: vpcmpestrm $100, %xmm3, %xmm11
+0xc4 0x63 0x79 0x60 0xdb 0x64
+
+# CHECK: vpcmpistri $100, %xmm3, %xmm11
+0xc4 0x63 0x79 0x63 0xdb 0x64
+
+# CHECK: vpcmpistrm $100, %xmm3, %xmm11
+0xc4 0x63 0x79 0x62 0xdb 0x64

llvm/test/MC/Disassembler/X86/x86-64-avx2.txt

@@ -0,0 +1,7 @@
+# RUN: llvm-mc --disassemble %s -triple=x86_64-apple-darwin9 | FileCheck %s
+
+# CHECK: vpackusdw %ymm0, %ymm2, %ymm1
+0xc4 0xe2 0x6d 0x2b 0xc8
+
+# CHECK: vphsubd %ymm0, %ymm2, %ymm1
+0xc4 0xe2 0x6d 0x06 0xc8