tests/gem5/replacement-policies/traces/fifo_test2_ld.py

# Copyright (c) 2022 Jarvis Jia, Jing Qu, Matt Sinclair, & Mingyuan Xiang
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# This test is targeting loads.
# Access pattern: A, C, E, G, A, C, I, K, E, G
# Each letter represents a 64-byte address range.

# The [] indicate two different sets, and each set has four ways.
# [set0way0, set0way1, set0way2, set0way3],
# [set1way0, set1way1, set1way2, set1way3],
# If you have a 512B cache with 4-way associativity, and each cache
# line is 64B with FIFO replacement policy, you will observe:
# m, m, m, m, h, h, m, m, h, h
# where 'm' means miss, and 'h' means hit.

# Explanation of this result:
# A, C, E, G are misses, now the cache stores
# ([A*, C, E, G],[ , , ,]), A marked * as the next entry to be evicted.
# A hits.
# Now the cache stores ([A*, C, E, G],[ , , ,]).
# C hits.
# Now the cache stores ([A*, C, E, G],[ , , ,]).
# I misses, searches for a victim and selects A.
# Now the cache stores ([I, C*, E, G],[ , , ,]).
# K misses, searches for a victim and selects C.
# Now the cache stores ([I, K, E*, G],[ , , ,]).
# E hits.
# Now the cache stores ([I, K, E*, G],[ , , ,]).
# G hits
# Now the cache stores ([I, K, E*, G],[ , , ,]).

from m5.objects.ReplacementPolicies import FIFORP as rp


def python_generator(generator):
    yield generator.createLinear(60000, 0, 63, 64, 30000, 30000, 100, 0)
    yield generator.createLinear(60000, 128, 191, 64, 30000, 30000, 100, 0)
    yield generator.createLinear(60000, 256, 319, 64, 30000, 30000, 100, 0)
    yield generator.createLinear(60000, 384, 447, 64, 30000, 30000, 100, 0)
    yield generator.createLinear(60000, 0, 63, 64, 30000, 30000, 100, 0)
    yield generator.createLinear(60000, 128, 191, 64, 30000, 30000, 100, 0)
    yield generator.createLinear(60000, 512, 575, 64, 30000, 30000, 100, 0)
    yield generator.createLinear(60000, 640, 703, 64, 30000, 30000, 100, 0)
    yield generator.createLinear(60000, 256, 319, 64, 30000, 30000, 100, 0)
    yield generator.createLinear(60000, 384, 447, 64, 30000, 30000, 100, 0)
    yield generator.createLinear(30000, 0, 0, 0, 30000, 30000, 100, 0)

    yield generator.createExit(0)