[PATCH] D31821: Remove redundant copy in recurrences

[Taewook Oh via Phabricator via llvm-commits]

twoh added a comment.

FYI, below is the compile difference in percentage for spec2006:

400.perlbench	0.23
401.bzip2	-0.01
403.gcc	-0.01
429.mcf	3.35
433.milc	1.11
444.namd	0.27
445.gobmk	0.20
447.dealII	0.49
450.soplex	1.02
453.povray	0.55
456.hmmer	0.19
458.sjeng	1.37
462.libquantum	1.76
464.h264ref	1.01
470.lbm	-0.98
471.omnetpp	1.61
473.astar	0.95
482.sphinx3	0.50
483.xalncbmk	-0.89


https://reviews.llvm.org/D31821