SN-1910 已核对来源，附原文与上下文。
MinGW GCC 4.5.0：
MinGW GCC 4.5.0:
Crypto++ 不能用，X86_SHA256_HashBlocks() 一直不返回
Crypto++ doesn't work, X86_SHA256_HashBlocks() never returns
我只有用 test.cpp 时才让 4 路并行跑起来，被 BitcoinMiner 调用时就不行
I only got 4-way working with test.cpp but not when called by BitcoinMiner
MinGW GCC 4.4.1：
MinGW GCC 4.4.1:
Crypto++ 能用
Crypto++ works
4 路并行 SIGSEGV
4-way SIGSEGV
GCC 显然没有对齐 __m128i。
GCC is definitely not aligning __m128i.
即使我们自己把 __m128i 变量对齐了，编译器也可能在后台用 __m128i 当临时变量。
Even if we align our own __m128i variables, the compiler may decide to use a __m128i behind the scenes as a temporary variable.
把我们的 __m128i 变量对齐、并把这几处 inline 改成 define 之后，我让它在 4.4.1 上用 -O0 跑通了：
By making our __m128i variables aligned and changing these inlines to defines, I was able to get it to work on 4.4.1 with -O0 only:
#define Ch(b, c, d) ((b & c) ^ (~b & d))
#define Maj(b, c, d) ((b & c) ^ (b & d) ^ (c & d))
#define ROTR(x, n) (_mm_srli_epi32(x, n) | _mm_slli_epi32(x, 32 - n))
#define SHR(x, n) _mm_srli_epi32(x, n)但那是在 -O0 下。
But that's with -O0.