0613418c98
Currently, we judge whether we need to fix up the branch instruction based on Optab.type_ field, but the type_ field in optab may change. This CL marks the branch instruction in optab, and checks whether to do fixing up according to the mark. Depending on the constant parameter range of the branch instruction, there are two labels, BRANCH14BITS, BRANCH19BITS. For the 26-bit branch, linker will handle it. Besides this CL removes the unnecessary alignment of the DWORD instruction. Because the ISA doesn't require it and no 64-bit load assume it. The only effect is that there is some performance penalty for loading from DWORDs if the 8-byte DWORD instruction crosses the cache line, but this is very rare. Change-Id: I993902b3fb5ad8e081dd6c441e86bcf581031835 Reviewed-on: https://go-review.googlesource.com/c/go/+/424135 Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Cherry Mui <cherryyz@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Run-TryBot: Eric Fang <eric.fang@arm.com> Reviewed-by: Joedian Reid <joedian@golang.org> |
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