llvm-project

0f22d47a - [LTO] Teach computeLTOCacheKey to return std::string (NFC) (#105331)

[LTO] Teach computeLTOCacheKey to return std::string (NFC) (#105331) Without this patch, computeLTOCacheKey computes SHA1, creates its hexadecimal representation with toHex, which returns std::string, and then copies it to an output parameter of type SmallString. This patch removes the redirection and teaches computeLTOCacheKey to directly return std::string computed by toHex. With the move semantics, no buffer copy should be involved. While I am at it, this patch adds a Twine to concatenate two strings.