From: Kewen Lin
Hi,
Previous version link:
https://gcc.gnu.org/ml/gcc-patches/2019-05/msg00654.html
Comparing with the previous version, I moved the generic
parts of rs6000 target hook to IVOPTs. But I still kept
the target hook as previous which checks some target
specific criteria like
From: Kewen Lin
Previous version link for background:
https://gcc.gnu.org/ml/gcc-patches/2019-04/msg00912.html
This hook is to predict whether one loop in gimple will
be transformed to low-overhead loop later in RTL, and
designed to be called in ivopts.
"Since the low-overhead loop optimize
From: Kewen Lin
Previous version link for background:
https://gcc.gnu.org/ml/gcc-patches/2019-04/msg00912.html
Firstly, it's to call predict_doloop_p hook to check this
loop will be transformed to doloop or not, if yes, find
the expected comp iv use and its dependent original iv,
set the iv
From: Kewen Lin
Previous version link:
https://gcc.gnu.org/ml/gcc-patches/2019-04/msg00912.html
This is a NFC (no functional change) patch. Ivopts has
some codes to expand gimple to RTL seq, but before call
expanding, we should call a preparation funciton
prepare_decl_rtl. This patch is to