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llvm-mirror/include
Tim Northover 9530f416eb ARM: align loops to 4 bytes on Cortex-M3 and Cortex-M4.
The Technical Reference Manuals for these two CPUs state that branching
to an unaligned 32-bit instruction incurs an extra pipeline reload
penalty. That's bad.

This also enables the optimization at -Os since it costs on average one
byte per loop in return for 1 cycle per iteration, which is pretty good
going.

llvm-svn: 342127
2018-09-13 10:28:05 +00:00
..
llvm ARM: align loops to 4 bytes on Cortex-M3 and Cortex-M4. 2018-09-13 10:28:05 +00:00
llvm-c [Aggressive InstCombine] Move C bindings to their own header file. 2018-09-05 11:41:12 +00:00