Remove XTEA SIMD impl

Testing showed no actual speedup on either i7 (SSE2) or POWER7 (Altivec),
so it is just dead weight.

3 files changed, 0 insertions, 165 deletions

diff --git a/src/lib/block/xtea_simd/info.txt b/src/lib/block/xtea_simd/info.txt
deleted file mode 100644
index 01fb4110d..000000000
--- a/src/lib/block/xtea_simd/info.txt
+++ /dev/null
@@ -1,6 +0,0 @@
-define XTEA_SIMD 20131128
-
-<requires>
-xtea
-simd
-</requires>
diff --git a/src/lib/block/xtea_simd/xtea_simd.cpp b/src/lib/block/xtea_simd/xtea_simd.cpp
deleted file mode 100644
index 6e50f4ff7..000000000
--- a/src/lib/block/xtea_simd/xtea_simd.cpp
+++ /dev/null
@@ -1,129 +0,0 @@
-/*
-* XTEA in SIMD
-* (C) 2009 Jack Lloyd
-*
-* Botan is released under the Simplified BSD License (see license.txt)
-*/
-
-#include <botan/xtea_simd.h>
-#include <botan/internal/simd_32.h>
-
-namespace Botan {
-
-namespace {
-
-void xtea_encrypt_8(const byte in[64], byte out[64], const u32bit EK[64])
-   {
-   SIMD_32 L0 = SIMD_32::load_be(in     );
-   SIMD_32 R0 = SIMD_32::load_be(in + 16);
-   SIMD_32 L1 = SIMD_32::load_be(in + 32);
-   SIMD_32 R1 = SIMD_32::load_be(in + 48);
-
-   SIMD_32::transpose(L0, R0, L1, R1);
-
-   for(size_t i = 0; i != 32; i += 2)
-      {
-      SIMD_32 K0(EK[2*i  ]);
-      SIMD_32 K1(EK[2*i+1]);
-      SIMD_32 K2(EK[2*i+2]);
-      SIMD_32 K3(EK[2*i+3]);
-
-      L0 += (((R0 << 4) ^ (R0 >> 5)) + R0) ^ K0;
-      L1 += (((R1 << 4) ^ (R1 >> 5)) + R1) ^ K0;
-
-      R0 += (((L0 << 4) ^ (L0 >> 5)) + L0) ^ K1;
-      R1 += (((L1 << 4) ^ (L1 >> 5)) + L1) ^ K1;
-
-      L0 += (((R0 << 4) ^ (R0 >> 5)) + R0) ^ K2;
-      L1 += (((R1 << 4) ^ (R1 >> 5)) + R1) ^ K2;
-
-      R0 += (((L0 << 4) ^ (L0 >> 5)) + L0) ^ K3;
-      R1 += (((L1 << 4) ^ (L1 >> 5)) + L1) ^ K3;
-      }
-
-   SIMD_32::transpose(L0, R0, L1, R1);
-
-   L0.store_be(out);
-   R0.store_be(out + 16);
-   L1.store_be(out + 32);
-   R1.store_be(out + 48);
-   }
-
-void xtea_decrypt_8(const byte in[64], byte out[64], const u32bit EK[64])
-   {
-   SIMD_32 L0 = SIMD_32::load_be(in     );
-   SIMD_32 R0 = SIMD_32::load_be(in + 16);
-   SIMD_32 L1 = SIMD_32::load_be(in + 32);
-   SIMD_32 R1 = SIMD_32::load_be(in + 48);
-
-   SIMD_32::transpose(L0, R0, L1, R1);
-
-   for(size_t i = 0; i != 32; i += 2)
-      {
-      SIMD_32 K0(EK[63 - 2*i]);
-      SIMD_32 K1(EK[62 - 2*i]);
-      SIMD_32 K2(EK[61 - 2*i]);
-      SIMD_32 K3(EK[60 - 2*i]);
-
-      R0 -= (((L0 << 4) ^ (L0 >> 5)) + L0) ^ K0;
-      R1 -= (((L1 << 4) ^ (L1 >> 5)) + L1) ^ K0;
-
-      L0 -= (((R0 << 4) ^ (R0 >> 5)) + R0) ^ K1;
-      L1 -= (((R1 << 4) ^ (R1 >> 5)) + R1) ^ K1;
-
-      R0 -= (((L0 << 4) ^ (L0 >> 5)) + L0) ^ K2;
-      R1 -= (((L1 << 4) ^ (L1 >> 5)) + L1) ^ K2;
-
-      L0 -= (((R0 << 4) ^ (R0 >> 5)) + R0) ^ K3;
-      L1 -= (((R1 << 4) ^ (R1 >> 5)) + R1) ^ K3;
-      }
-
-   SIMD_32::transpose(L0, R0, L1, R1);
-
-   L0.store_be(out);
-   R0.store_be(out + 16);
-   L1.store_be(out + 32);
-   R1.store_be(out + 48);
-   }
-
-}
-
-/*
-* XTEA Encryption
-*/
-void XTEA_SIMD::encrypt_n(const byte in[], byte out[], size_t blocks) const
-   {
-   const u32bit* KS = &(this->get_EK()[0]);
-
-   while(blocks >= 8)
-      {
-      xtea_encrypt_8(in, out, KS);
-      in += 8 * BLOCK_SIZE;
-      out += 8 * BLOCK_SIZE;
-      blocks -= 8;
-      }
-
-   if(blocks)
-     XTEA::encrypt_n(in, out, blocks);
-   }
-
-/*
-* XTEA Decryption
-*/
-void XTEA_SIMD::decrypt_n(const byte in[], byte out[], size_t blocks) const
-   {
-   const u32bit* KS = &(this->get_EK()[0]);
-
-   while(blocks >= 8)
-      {
-      xtea_decrypt_8(in, out, KS);
-      in += 8 * BLOCK_SIZE;
-      out += 8 * BLOCK_SIZE;
-      blocks -= 8;
-      }
-
-   if(blocks)
-     XTEA::decrypt_n(in, out, blocks);
-   }
-
-}
diff --git a/src/lib/block/xtea_simd/xtea_simd.h b/src/lib/block/xtea_simd/xtea_simd.h
deleted file mode 100644
index 0b0558032..000000000
--- a/src/lib/block/xtea_simd/xtea_simd.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
-* XTEA in SIMD
-* (C) 2009 Jack Lloyd
-*
-* Botan is released under the Simplified BSD License (see license.txt)
-*/
-
-#ifndef BOTAN_XTEA_SIMD_H__
-#define BOTAN_XTEA_SIMD_H__
-
-#include <botan/xtea.h>
-
-namespace Botan {
-
-/**
-* XTEA implemented using SIMD operations
-*/
-class BOTAN_DLL XTEA_SIMD final : public XTEA
-   {
-   public:
-      size_t parallelism() const override { return 8; }
-
-      void encrypt_n(const byte in[], byte out[], size_t blocks) const override;
-      void decrypt_n(const byte in[], byte out[], size_t blocks) const override;
-      BlockCipher* clone() const override { return new XTEA_SIMD; }
-   };
-
-}
-
-#endif