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3 Commits

Author SHA1 Message Date
Nemanja Ivanovic
70193b21d1 [NFC] Fix test case after edab7dd426249bd40059b49b255ba9cc5b784753 
The author of the patch forgot to add -verify-machineinstrs to the RUN
lines which would have made the issue appear on all bots. Added that
as well as a fix for the undefined register issue (after the hoisting).
 2019-11-11 20:40:40 -06:00
Victor Huang
6b0af41ad7 Fixing PowerPC llc test cases for Disable hoisting MI to hotter basic blocks by adding powerpc triple 2019-11-11 23:47:47 +00:00
Victor Huang
edab7dd426 Disable hoisting MI to hotter basic blocks 
In current Hoist() function of machine licm pass, it will not check the source and destination basic block frequencies that a instruction is hoisted from/to.
There is a chance that instruction is hoisted from a cold to a hot basic block.

In this patch, we add options to disable machine instruction hoisting if destination block is hotter.

Differential Revision: https://reviews.llvm.org/D63676
 2019-11-11 21:32:56 +00:00