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提交 67e07902 编写于 作者: M mdoerr
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8188868: PPC64: Support AES intrinsics on Big Endian 

Reviewed-by: goetz
上级 7970ee20
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Showing with 195 addition and 188 deletion
src/cpu/ppc/vm/assembler_ppc.hpp
浏览文件 @ 67e07902
......@@ -2100,6 +2100,7 @@ class Assembler : public AbstractAssembler {
// Endianess specific concatenation of 2 loaded vectors.
inline void load_perm(VectorRegister perm, Register addr);
inline void vec_perm(VectorRegister first_dest, VectorRegister second, VectorRegister perm);
inline void vec_perm(VectorRegister dest, VectorRegister first, VectorRegister second, VectorRegister perm);
// RegisterOrConstant versions.
// These emitters choose between the versions using two registers and
......
src/cpu/ppc/vm/assembler_ppc.inline.hpp
浏览文件 @ 67e07902
......@@ -904,6 +904,14 @@ inline void Assembler::vec_perm(VectorRegister first_dest, VectorRegister second
#endif
}
inline void Assembler::vec_perm(VectorRegister dest, VectorRegister first, VectorRegister second, VectorRegister perm) {
#if defined(VM_LITTLE_ENDIAN)
vperm(dest, second, first, perm);
#else
vperm(dest, first, second, perm);
#endif
}
inline void Assembler::load_const(Register d, void* x, Register tmp) {
load_const(d, (long)x, tmp);
}
......
src/cpu/ppc/vm/stubGenerator_ppc.cpp
浏览文件 @ 67e07902
......@@ -2224,7 +2224,7 @@ class StubGenerator: public StubCodeGenerator {
return start;
}
// Arguments for generated stub (little endian only):
// Arguments for generated stub:
// R3_ARG1 - source byte array address
// R4_ARG2 - destination byte array address
// R5_ARG3 - round key array
......@@ -2243,7 +2243,6 @@ class StubGenerator: public StubCodeGenerator {
Register keylen = R8;
Register temp = R9;
Register keypos = R10;
Register hex = R11;
Register fifteen = R12;
VectorRegister vRet = VR0;
......@@ -2263,60 +2262,58 @@ class StubGenerator: public StubCodeGenerator {
VectorRegister vTmp3 = VR11;
VectorRegister vTmp4 = VR12;
VectorRegister vLow = VR13;
VectorRegister vHigh = VR14;
__ li (hex, 16);
__ li (fifteen, 15);
__ vspltisb (fSplt, 0x0f);
// load unaligned from[0-15] to vsRet
__ lvx (vRet, from);
__ lvx (vTmp1, fifteen, from);
__ lvsl (fromPerm, from);
#ifdef VM_LITTLE_ENDIAN
__ vspltisb (fSplt, 0x0f);
__ vxor (fromPerm, fromPerm, fSplt);
#endif
__ vperm (vRet, vRet, vTmp1, fromPerm);
// load keylen (44 or 52 or 60)
__ lwz (keylen, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT), key);
// to load keys
__ lvsr (keyPerm, key);
__ vxor (vTmp2, vTmp2, vTmp2);
__ load_perm (keyPerm, key);
#ifdef VM_LITTLE_ENDIAN
__ vspltisb (vTmp2, -16);
__ vrld (keyPerm, keyPerm, vTmp2);
__ vrld (keyPerm, keyPerm, vTmp2);
__ vsldoi (keyPerm, keyPerm, keyPerm, 8);
#endif
// load the 1st round key to vKey1
__ li (keypos, 0);
// load the 1st round key to vTmp1
__ lvx (vTmp1, key);
__ li (keypos, 16);
__ lvx (vKey1, keypos, key);
__ addi (keypos, keypos, 16);
__ lvx (vTmp1, keypos, key);
__ vperm (vKey1, vTmp1, vKey1, keyPerm);
__ vec_perm (vTmp1, vKey1, keyPerm);
// 1st round
__ vxor (vRet, vRet, vKey1);
__ vxor (vRet, vRet, vTmp1);
// load the 2nd round key to vKey1
__ addi (keypos, keypos, 16);
__ lvx (vTmp2, keypos, key);
__ vperm (vKey1, vTmp2, vTmp1, keyPerm);
__ li (keypos, 32);
__ lvx (vKey2, keypos, key);
__ vec_perm (vKey1, vKey2, keyPerm);
// load the 3rd round key to vKey2
__ addi (keypos, keypos, 16);
__ lvx (vTmp1, keypos, key);
__ vperm (vKey2, vTmp1, vTmp2, keyPerm);
__ li (keypos, 48);
__ lvx (vKey3, keypos, key);
__ vec_perm (vKey2, vKey3, keyPerm);
// load the 4th round key to vKey3
__ addi (keypos, keypos, 16);
__ lvx (vTmp2, keypos, key);
__ vperm (vKey3, vTmp2, vTmp1, keyPerm);
__ li (keypos, 64);
__ lvx (vKey4, keypos, key);
__ vec_perm (vKey3, vKey4, keyPerm);
// load the 5th round key to vKey4
__ addi (keypos, keypos, 16);
__ li (keypos, 80);
__ lvx (vTmp1, keypos, key);
__ vperm (vKey4, vTmp1, vTmp2, keyPerm);
__ vec_perm (vKey4, vTmp1, keyPerm);
// 2nd - 5th rounds
__ vcipher (vRet, vRet, vKey1);
......@@ -2325,24 +2322,24 @@ class StubGenerator: public StubCodeGenerator {
__ vcipher (vRet, vRet, vKey4);
// load the 6th round key to vKey1
__ addi (keypos, keypos, 16);
__ lvx (vTmp2, keypos, key);
__ vperm (vKey1, vTmp2, vTmp1, keyPerm);
__ li (keypos, 96);
__ lvx (vKey2, keypos, key);
__ vec_perm (vKey1, vTmp1, vKey2, keyPerm);
// load the 7th round key to vKey2
__ addi (keypos, keypos, 16);
__ lvx (vTmp1, keypos, key);
__ vperm (vKey2, vTmp1, vTmp2, keyPerm);
__ li (keypos, 112);
__ lvx (vKey3, keypos, key);
__ vec_perm (vKey2, vKey3, keyPerm);
// load the 8th round key to vKey3
__ addi (keypos, keypos, 16);
__ lvx (vTmp2, keypos, key);
__ vperm (vKey3, vTmp2, vTmp1, keyPerm);
__ li (keypos, 128);
__ lvx (vKey4, keypos, key);
__ vec_perm (vKey3, vKey4, keyPerm);
// load the 9th round key to vKey4
__ addi (keypos, keypos, 16);
__ li (keypos, 144);
__ lvx (vTmp1, keypos, key);
__ vperm (vKey4, vTmp1, vTmp2, keyPerm);
__ vec_perm (vKey4, vTmp1, keyPerm);
// 6th - 9th rounds
__ vcipher (vRet, vRet, vKey1);
......@@ -2351,14 +2348,14 @@ class StubGenerator: public StubCodeGenerator {
__ vcipher (vRet, vRet, vKey4);
// load the 10th round key to vKey1
__ addi (keypos, keypos, 16);
__ lvx (vTmp2, keypos, key);
__ vperm (vKey1, vTmp2, vTmp1, keyPerm);
__ li (keypos, 160);
__ lvx (vKey2, keypos, key);
__ vec_perm (vKey1, vTmp1, vKey2, keyPerm);
// load the 11th round key to vKey2
__ addi (keypos, keypos, 16);
__ li (keypos, 176);
__ lvx (vTmp1, keypos, key);
__ vperm (vKey2, vTmp1, vTmp2, keyPerm);
__ vec_perm (vKey2, vTmp1, keyPerm);
// if all round keys are loaded, skip next 4 rounds
__ cmpwi (CCR0, keylen, 44);
......@@ -2369,14 +2366,14 @@ class StubGenerator: public StubCodeGenerator {
__ vcipher (vRet, vRet, vKey2);
// load the 12th round key to vKey1
__ addi (keypos, keypos, 16);
__ lvx (vTmp2, keypos, key);
__ vperm (vKey1, vTmp2, vTmp1, keyPerm);
__ li (keypos, 192);
__ lvx (vKey2, keypos, key);
__ vec_perm (vKey1, vTmp1, vKey2, keyPerm);
// load the 13th round key to vKey2
__ addi (keypos, keypos, 16);
__ li (keypos, 208);
__ lvx (vTmp1, keypos, key);
__ vperm (vKey2, vTmp1, vTmp2, keyPerm);
__ vec_perm (vKey2, vTmp1, keyPerm);
// if all round keys are loaded, skip next 2 rounds
__ cmpwi (CCR0, keylen, 52);
......@@ -2387,14 +2384,14 @@ class StubGenerator: public StubCodeGenerator {
__ vcipher (vRet, vRet, vKey2);
// load the 14th round key to vKey1
__ addi (keypos, keypos, 16);
__ lvx (vTmp2, keypos, key);
__ vperm (vKey1, vTmp2, vTmp1, keyPerm);
__ li (keypos, 224);
__ lvx (vKey2, keypos, key);
__ vec_perm (vKey1, vTmp1, vKey2, keyPerm);
// load the 15th round key to vKey2
__ addi (keypos, keypos, 16);
__ li (keypos, 240);
__ lvx (vTmp1, keypos, key);
__ vperm (vKey2, vTmp1, vTmp2, keyPerm);
__ vec_perm (vKey2, vTmp1, keyPerm);
__ bind(L_doLast);
......@@ -2402,25 +2399,33 @@ class StubGenerator: public StubCodeGenerator {
__ vcipher (vRet, vRet, vKey1);
__ vcipherlast (vRet, vRet, vKey2);
__ neg (temp, to);
__ lvsr (toPerm, temp);
__ vspltisb (vTmp2, -1);
__ vxor (vTmp1, vTmp1, vTmp1);
__ vperm (vTmp2, vTmp2, vTmp1, toPerm);
__ vxor (toPerm, toPerm, fSplt);
// store result (unaligned)
#ifdef VM_LITTLE_ENDIAN
__ lvsl (toPerm, to);
#else
__ lvsr (toPerm, to);
#endif
__ vspltisb (vTmp3, -1);
__ vspltisb (vTmp4, 0);
__ lvx (vTmp1, to);
__ vperm (vRet, vRet, vRet, toPerm);
__ vsel (vTmp1, vTmp1, vRet, vTmp2);
__ lvx (vTmp4, fifteen, to);
__ lvx (vTmp2, fifteen, to);
#ifdef VM_LITTLE_ENDIAN
__ vperm (vTmp3, vTmp3, vTmp4, toPerm); // generate select mask
__ vxor (toPerm, toPerm, fSplt); // swap bytes
#else
__ vperm (vTmp3, vTmp4, vTmp3, toPerm); // generate select mask
#endif
__ vperm (vTmp4, vRet, vRet, toPerm); // rotate data
__ vsel (vTmp2, vTmp4, vTmp2, vTmp3);
__ vsel (vTmp1, vTmp1, vTmp4, vTmp3);
__ stvx (vTmp2, fifteen, to); // store this one first (may alias)
__ stvx (vTmp1, to);
__ vsel (vRet, vRet, vTmp4, vTmp2);
__ stvx (vRet, fifteen, to);
__ blr();
return start;
}
// Arguments for generated stub (little endian only):
// Arguments for generated stub:
// R3_ARG1 - source byte array address
// R4_ARG2 - destination byte array address
// R5_ARG3 - K (key) in little endian int array
......@@ -2442,7 +2447,6 @@ class StubGenerator: public StubCodeGenerator {
Register keylen = R8;
Register temp = R9;
Register keypos = R10;
Register hex = R11;
Register fifteen = R12;
VectorRegister vRet = VR0;
......@@ -2463,30 +2467,30 @@ class StubGenerator: public StubCodeGenerator {
VectorRegister vTmp3 = VR12;
VectorRegister vTmp4 = VR13;
VectorRegister vLow = VR14;
VectorRegister vHigh = VR15;
__ li (hex, 16);
__ li (fifteen, 15);
__ vspltisb (fSplt, 0x0f);
// load unaligned from[0-15] to vsRet
__ lvx (vRet, from);
__ lvx (vTmp1, fifteen, from);
__ lvsl (fromPerm, from);
#ifdef VM_LITTLE_ENDIAN
__ vspltisb (fSplt, 0x0f);
__ vxor (fromPerm, fromPerm, fSplt);
#endif
__ vperm (vRet, vRet, vTmp1, fromPerm); // align [and byte swap in LE]
// load keylen (44 or 52 or 60)
__ lwz (keylen, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT), key);
// to load keys
__ lvsr (keyPerm, key);
__ load_perm (keyPerm, key);
#ifdef VM_LITTLE_ENDIAN
__ vxor (vTmp2, vTmp2, vTmp2);
__ vspltisb (vTmp2, -16);
__ vrld (keyPerm, keyPerm, vTmp2);
__ vrld (keyPerm, keyPerm, vTmp2);
__ vsldoi (keyPerm, keyPerm, keyPerm, 8);
#endif
__ cmpwi (CCR0, keylen, 44);
__ beq (CCR0, L_do44);
......@@ -2494,32 +2498,32 @@ class StubGenerator: public StubCodeGenerator {
__ cmpwi (CCR0, keylen, 52);
__ beq (CCR0, L_do52);
// load the 15th round key to vKey11
// load the 15th round key to vKey1
__ li (keypos, 240);
__ lvx (vTmp1, keypos, key);
__ addi (keypos, keypos, -16);
__ lvx (vTmp2, keypos, key);
__ vperm (vKey1, vTmp1, vTmp2, keyPerm);
__ lvx (vKey1, keypos, key);
__ li (keypos, 224);
__ lvx (vKey2, keypos, key);
__ vec_perm (vKey1, vKey2, vKey1, keyPerm);
// load the 14th round key to vKey10
__ addi (keypos, keypos, -16);
__ lvx (vTmp1, keypos, key);
__ vperm (vKey2, vTmp2, vTmp1, keyPerm);
// load the 14th round key to vKey2
__ li (keypos, 208);
__ lvx (vKey3, keypos, key);
__ vec_perm (vKey2, vKey3, vKey2, keyPerm);
// load the 13th round key to vKey10
__ addi (keypos, keypos, -16);
__ lvx (vTmp2, keypos, key);
__ vperm (vKey3, vTmp1, vTmp2, keyPerm);
// load the 13th round key to vKey3
__ li (keypos, 192);
__ lvx (vKey4, keypos, key);
__ vec_perm (vKey3, vKey4, vKey3, keyPerm);
// load the 12th round key to vKey10
__ addi (keypos, keypos, -16);
__ lvx (vTmp1, keypos, key);
__ vperm (vKey4, vTmp2, vTmp1, keyPerm);
// load the 12th round key to vKey4
__ li (keypos, 176);
__ lvx (vKey5, keypos, key);
__ vec_perm (vKey4, vKey5, vKey4, keyPerm);
// load the 11th round key to vKey10
__ addi (keypos, keypos, -16);
__ lvx (vTmp2, keypos, key);
__ vperm (vKey5, vTmp1, vTmp2, keyPerm);
// load the 11th round key to vKey5
__ li (keypos, 160);
__ lvx (vTmp1, keypos, key);
__ vec_perm (vKey5, vTmp1, vKey5, keyPerm);
// 1st - 5th rounds
__ vxor (vRet, vRet, vKey1);
......@@ -2532,22 +2536,22 @@ class StubGenerator: public StubCodeGenerator {
__ bind (L_do52);
// load the 13th round key to vKey11
// load the 13th round key to vKey1
__ li (keypos, 208);
__ lvx (vTmp1, keypos, key);
__ addi (keypos, keypos, -16);
__ lvx (vTmp2, keypos, key);
__ vperm (vKey1, vTmp1, vTmp2, keyPerm);
__ lvx (vKey1, keypos, key);
__ li (keypos, 192);
__ lvx (vKey2, keypos, key);
__ vec_perm (vKey1, vKey2, vKey1, keyPerm);
// load the 12th round key to vKey10
__ addi (keypos, keypos, -16);
__ lvx (vTmp1, keypos, key);
__ vperm (vKey2, vTmp2, vTmp1, keyPerm);
// load the 12th round key to vKey2
__ li (keypos, 176);
__ lvx (vKey3, keypos, key);
__ vec_perm (vKey2, vKey3, vKey2, keyPerm);
// load the 11th round key to vKey10
__ addi (keypos, keypos, -16);
__ lvx (vTmp2, keypos, key);
__ vperm (vKey3, vTmp1, vTmp2, keyPerm);
// load the 11th round key to vKey3
__ li (keypos, 160);
__ lvx (vTmp1, keypos, key);
__ vec_perm (vKey3, vTmp1, vKey3, keyPerm);
// 1st - 3rd rounds
__ vxor (vRet, vRet, vKey1);
......@@ -2558,42 +2562,42 @@ class StubGenerator: public StubCodeGenerator {
__ bind (L_do44);
// load the 11th round key to vKey11
// load the 11th round key to vKey1
__ li (keypos, 176);
__ lvx (vKey1, keypos, key);
__ li (keypos, 160);
__ lvx (vTmp1, keypos, key);
__ addi (keypos, keypos, -16);
__ lvx (vTmp2, keypos, key);
__ vperm (vKey1, vTmp1, vTmp2, keyPerm);
__ vec_perm (vKey1, vTmp1, vKey1, keyPerm);
// 1st round
__ vxor (vRet, vRet, vKey1);
__ bind (L_doLast);
// load the 10th round key to vKey10
__ addi (keypos, keypos, -16);
__ lvx (vTmp1, keypos, key);
__ vperm (vKey1, vTmp2, vTmp1, keyPerm);
// load the 10th round key to vKey1
__ li (keypos, 144);
__ lvx (vKey2, keypos, key);
__ vec_perm (vKey1, vKey2, vTmp1, keyPerm);
// load the 9th round key to vKey10
__ addi (keypos, keypos, -16);
__ lvx (vTmp2, keypos, key);
__ vperm (vKey2, vTmp1, vTmp2, keyPerm);
// load the 9th round key to vKey2
__ li (keypos, 128);
__ lvx (vKey3, keypos, key);
__ vec_perm (vKey2, vKey3, vKey2, keyPerm);
// load the 8th round key to vKey10
__ addi (keypos, keypos, -16);
__ lvx (vTmp1, keypos, key);
__ vperm (vKey3, vTmp2, vTmp1, keyPerm);
// load the 8th round key to vKey3
__ li (keypos, 112);
__ lvx (vKey4, keypos, key);
__ vec_perm (vKey3, vKey4, vKey3, keyPerm);
// load the 7th round key to vKey10
__ addi (keypos, keypos, -16);
__ lvx (vTmp2, keypos, key);
__ vperm (vKey4, vTmp1, vTmp2, keyPerm);
// load the 7th round key to vKey4
__ li (keypos, 96);
__ lvx (vKey5, keypos, key);
__ vec_perm (vKey4, vKey5, vKey4, keyPerm);
// load the 6th round key to vKey10
__ addi (keypos, keypos, -16);
// load the 6th round key to vKey5
__ li (keypos, 80);
__ lvx (vTmp1, keypos, key);
__ vperm (vKey5, vTmp2, vTmp1, keyPerm);
__ vec_perm (vKey5, vTmp1, vKey5, keyPerm);
// last 10th - 6th rounds
__ vncipher (vRet, vRet, vKey1);
......@@ -2602,30 +2606,29 @@ class StubGenerator: public StubCodeGenerator {
__ vncipher (vRet, vRet, vKey4);
__ vncipher (vRet, vRet, vKey5);
// load the 5th round key to vKey10
__ addi (keypos, keypos, -16);
__ lvx (vTmp2, keypos, key);
__ vperm (vKey1, vTmp1, vTmp2, keyPerm);
// load the 5th round key to vKey1
__ li (keypos, 64);
__ lvx (vKey2, keypos, key);
__ vec_perm (vKey1, vKey2, vTmp1, keyPerm);
// load the 4th round key to vKey10
__ addi (keypos, keypos, -16);
__ lvx (vTmp1, keypos, key);
__ vperm (vKey2, vTmp2, vTmp1, keyPerm);
// load the 4th round key to vKey2
__ li (keypos, 48);
__ lvx (vKey3, keypos, key);
__ vec_perm (vKey2, vKey3, vKey2, keyPerm);
// load the 3rd round key to vKey10
__ addi (keypos, keypos, -16);
__ lvx (vTmp2, keypos, key);
__ vperm (vKey3, vTmp1, vTmp2, keyPerm);
// load the 3rd round key to vKey3
__ li (keypos, 32);
__ lvx (vKey4, keypos, key);
__ vec_perm (vKey3, vKey4, vKey3, keyPerm);
// load the 2nd round key to vKey10
__ addi (keypos, keypos, -16);
__ lvx (vTmp1, keypos, key);
__ vperm (vKey4, vTmp2, vTmp1, keyPerm);
// load the 2nd round key to vKey4
__ li (keypos, 16);
__ lvx (vKey5, keypos, key);
__ vec_perm (vKey4, vKey5, vKey4, keyPerm);
// load the 1st round key to vKey10
__ addi (keypos, keypos, -16);
__ lvx (vTmp2, keypos, key);
__ vperm (vKey5, vTmp1, vTmp2, keyPerm);
// load the 1st round key to vKey5
__ lvx (vTmp1, key);
__ vec_perm (vKey5, vTmp1, vKey5, keyPerm);
// last 5th - 1th rounds
__ vncipher (vRet, vRet, vKey1);
......@@ -2634,19 +2637,27 @@ class StubGenerator: public StubCodeGenerator {
__ vncipher (vRet, vRet, vKey4);
__ vncipherlast (vRet, vRet, vKey5);
__ neg (temp, to);
__ lvsr (toPerm, temp);
__ vspltisb (vTmp2, -1);
__ vxor (vTmp1, vTmp1, vTmp1);
__ vperm (vTmp2, vTmp2, vTmp1, toPerm);
__ vxor (toPerm, toPerm, fSplt);
// store result (unaligned)
#ifdef VM_LITTLE_ENDIAN
__ lvsl (toPerm, to);
#else
__ lvsr (toPerm, to);
#endif
__ vspltisb (vTmp3, -1);
__ vspltisb (vTmp4, 0);
__ lvx (vTmp1, to);
__ vperm (vRet, vRet, vRet, toPerm);
__ vsel (vTmp1, vTmp1, vRet, vTmp2);
__ lvx (vTmp4, fifteen, to);
__ lvx (vTmp2, fifteen, to);
#ifdef VM_LITTLE_ENDIAN
__ vperm (vTmp3, vTmp3, vTmp4, toPerm); // generate select mask
__ vxor (toPerm, toPerm, fSplt); // swap bytes
#else
__ vperm (vTmp3, vTmp4, vTmp3, toPerm); // generate select mask
#endif
__ vperm (vTmp4, vRet, vRet, toPerm); // rotate data
__ vsel (vTmp2, vTmp4, vTmp2, vTmp3);
__ vsel (vTmp1, vTmp1, vTmp4, vTmp3);
__ stvx (vTmp2, fifteen, to); // store this one first (may alias)
__ stvx (vTmp1, to);
__ vsel (vRet, vRet, vTmp4, vTmp2);
__ stvx (vRet, fifteen, to);
__ blr();
return start;
......
src/cpu/ppc/vm/stubRoutines_ppc_64.hpp
浏览文件 @ 67e07902
......@@ -34,7 +34,7 @@ static bool returns_to_call_stub(address return_pc) { return return_pc == _call_
enum platform_dependent_constants {
code_size1 = 20000, // simply increase if too small (assembler will crash if too small)
code_size2 = 22000 // simply increase if too small (assembler will crash if too small)
code_size2 = 24000 // simply increase if too small (assembler will crash if too small)
};
// CRC32 Intrinsics.
......
src/cpu/ppc/vm/vm_version_ppc.cpp
浏览文件 @ 67e07902
......@@ -174,7 +174,6 @@ void VM_Version::initialize() {
}
// The AES intrinsic stubs require AES instruction support.
#if defined(VM_LITTLE_ENDIAN)
if (has_vcipher()) {
if (FLAG_IS_DEFAULT(UseAES)) {
UseAES = true;
......@@ -195,18 +194,6 @@ void VM_Version::initialize() {
FLAG_SET_DEFAULT(UseAESIntrinsics, false);
}
#else
if (UseAES) {
warning("AES instructions are not available on this CPU");
FLAG_SET_DEFAULT(UseAES, false);
}
if (UseAESIntrinsics) {
if (!FLAG_IS_DEFAULT(UseAESIntrinsics))
warning("AES intrinsics are not available on this CPU");
FLAG_SET_DEFAULT(UseAESIntrinsics, false);
}
#endif
if (has_vshasig()) {
if (FLAG_IS_DEFAULT(UseSHA)) {
UseSHA = true;
......
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