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cpu: Add an indirect branch target predictor

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This patch adds a configurable indirect branch predictor that can be indexed
by a combination of GHR and path history hashes. Implements the functionality
described in:

"Target prediction for indirect jumps" by Chang, Hao, and Patt
http://dl.acm.org/citation.cfm?id=264209

This is a re-spin of fb9d142 after the revert (bd1c6789).
This commit is contained in:
Mitch Hayenga
2016-04-05 11:48:37 -05:00
parent 3f6874cb29
commit 0fd4bb7f12
10 changed files with 426 additions and 27 deletions
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2
src/cpu/pred/SConscript
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@@ -35,9 +35,11 @@ if env['TARGET_ISA'] == 'null':
SimObject('BranchPredictor.py')
DebugFlag('Indirect')
Source('bpred_unit.cc')
Source('2bit_local.cc')
Source('btb.cc')
Source('indirect.cc')
Source('ras.cc')
Source('tournament.cc')
Source ('bi_mode.cc')