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Silvermont can only decode one instruction per cycle if the instruction exceeds 8 bytes. Also in Silvermont instructions with more than 3 prefixes will cause 3 cycle penalty. Maximum nop length is limited to 7 bytes when used for padding on Silvermont. For other x86 processors max nop length remains unchanged 15 bytes. Differential Revision: http://reviews.llvm.org/D4374 llvm-svn: 212321 |
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.. | ||
CMakeLists.txt | ||
LLVMBuild.txt | ||
Makefile | ||
X86AsmBackend.cpp | ||
X86BaseInfo.h | ||
X86ELFObjectWriter.cpp | ||
X86ELFRelocationInfo.cpp | ||
X86FixupKinds.h | ||
X86MachObjectWriter.cpp | ||
X86MachORelocationInfo.cpp | ||
X86MCAsmInfo.cpp | ||
X86MCAsmInfo.h | ||
X86MCCodeEmitter.cpp | ||
X86MCTargetDesc.cpp | ||
X86MCTargetDesc.h | ||
X86WinCOFFObjectWriter.cpp | ||
X86WinCOFFStreamer.cpp |