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one-byte NOPs. If the processor actually executes those NOPs, as it sometimes does with aligned bundling, this can have a performance impact. From my micro-benchmarks run on my one machine, a 15-byte NOP followed by twelve one-byte NOPs is about 20% worse than a 15 followed by a 12. This patch changes NOP emission to emit as many 15-byte (the maximum) as possible followed by at most one shorter NOP. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176464 91177308-0d34-0410-b5e6-96231b3b80d8 |
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AArch64 | ||
ARM | ||
AsmParser | ||
COFF | ||
Disassembler | ||
ELF | ||
MachO | ||
Markup | ||
MBlaze | ||
Mips | ||
PowerPC | ||
X86 |