arne
/
cryptopp
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Add additional comments

pull/795/head
Jeffrey Walton 2019-01-16 17:26:30 -05:00
parent e86a6b32eb
commit 2718731bac
No known key found for this signature in database
GPG Key ID: B36AB348921B1838
1 changed files with 7 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
config.h
View File

@ -297,11 +297,13 @@ const lword LWORD_MAX = W64LIT(0xffffffffffffffff);
// Also see https://bugs.llvm.org/show_bug.cgi?id=39895 .
// #define CRYPTOPP_DISABLE_MIXED_ASM 1
// Several compilers discard SIMD code that loads unaligned data. For example,
// Power7 can load unaligned data using vec_vsx_ld but GCC and Clang require
// 16-byte aligned arrays when using builtin function. Define this to disable
// Crypto++ code that uses problematic builtins or intrinsics.
// #define CRYPTOPP_BUGGY_SIMD_LOAD_AND_STORE 1
// Several compilers discard SIMD code that loads unaligned data. The symptom
// is often self test failures and UBsan findings of unaligned loads. For
// example, Power7 can load unaligned data using vec_vsx_ld but some versions
// of GCC and Clang require 16-byte aligned arrays when using the builtin
// function. It is not limited to SSE and PowerPC code. Define this to disable
// Crypto++ code that uses potentially problematic builtins or intrinsics.
#define CRYPTOPP_BUGGY_SIMD_LOAD_AND_STORE 1
// This list will probably grow over time as more compilers are identified.
#if defined(CRYPTOPP_BUGGY_SIMD_LOAD_AND_STORE)