wangtao
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
320,472 Commits 29 Branches 0 Tags 2.2 GiB
Commit Graph

2 Commits

Author SHA1 Message Date
Sam Parker 9a92be1b35 [HardwareLoops] Loop counter guard intrinsic 
Introduce llvm.test.set.loop.iterations which sets the loop counter
and also produces an i1 after testing that the count is not zero.

Differential Revision: https://reviews.llvm.org/D63809

llvm-svn: 364628
 2019-06-28 07:38:16 +00:00
Sam Parker 1bd3d00e7e [CodeGen] Check for HardwareLoop Latch ExitBlock 
The HardwareLoops pass finds exit blocks with a scevable exit count.
If the target specifies to update the loop counter in a register,
through a phi, we need to ensure that the exit block is a latch so
that we can insert the phi with the correct value for the incoming
edge.

Differential Revision: https://reviews.llvm.org/D63336

llvm-svn: 363556
 2019-06-17 13:39:28 +00:00