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-rw-r--r--MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem8.asm53
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diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem8.asm b/MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem8.asm
deleted file mode 100644
index 8ece85e5b4a2..000000000000
--- a/MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem8.asm
+++ /dev/null
@@ -1,53 +0,0 @@
-;------------------------------------------------------------------------------
-;
-; Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
-; This program and the accompanying materials
-; are licensed and made available under the terms and conditions of the BSD License
-; which accompanies this distribution. The full text of the license may be found at
-; http://opensource.org/licenses/bsd-license.php.
-;
-; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-;
-; Module Name:
-;
-; ScanMem8.Asm
-;
-; Abstract:
-;
-; ScanMem8 function
-;
-; Notes:
-;
-; The following BaseMemoryLib instances contain the same copy of this file:
-;
-; BaseMemoryLibRepStr
-; BaseMemoryLibMmx
-; BaseMemoryLibSse2
-; BaseMemoryLibOptDxe
-; BaseMemoryLibOptPei
-;
-;------------------------------------------------------------------------------
-
- .code
-
-;------------------------------------------------------------------------------
-; CONST VOID *
-; EFIAPI
-; InternalMemScanMem8 (
-; IN CONST VOID *Buffer,
-; IN UINTN Length,
-; IN UINT8 Value
-; );
-;------------------------------------------------------------------------------
-InternalMemScanMem8 PROC USES rdi
- mov rdi, rcx
- mov rcx, rdx
- mov rax, r8
- repne scasb
- lea rax, [rdi - 1]
- cmovnz rax, rcx ; set rax to 0 if not found
- ret
-InternalMemScanMem8 ENDP
-
- END