[Bug target/61915] [AArch64] Default use of the LRA results in extra code size
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61915 --- Comment #1 from Andrew Pinski --- > How is this accomplished internally in A53 and A57? I don't know about A53 and A57 but I can say that for Cavium's Thunder, it does not go through the load/store unit and there is a direct path between the gprs and fps (and the latency for them is low).
[Bug target/61915] [AArch64] Default use of the LRA results in extra code size
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61915 --- Comment #2 from Andrew Pinski --- https://gcc.gnu.org/ml/gcc/2014-05/msg00160.html
[Bug target/61915] [AArch64] Default use of the LRA results in extra code size
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61915 --- Comment #3 from Evandro Menezes --- In Opteron, there was a path from FP to the GP registers, but not the other way around. That path was eventually made symmetric in Barcelona only.