The simplescalar tool set, version 2.0(14)

-mem:width <bytes>

specify width of memory bus in bytes. Thedefault is 8 bytes.

-tlb:lat <cycles>

specify latency (in cycles) to service a TLBmiss. The default is 30 cycles.Specifying the branch predictor

Branch prediction is speci ed by choosing the following agwith one of the six subsequent arguments. The default is a bimo-dal predictor with 2048 entries.-bpred <type>nottakenalways predict not taken.takenalways predict taken.perfectperfect predictor.bimodbimodal predictor, using a branch target

buffer (BTB) with 2-bit counters.

2lev2-level adaptive bcombined predictor (bimodal and 2-level

adaptive).The predictor-speci c arguments are listed below:-bpred:bimod <size>

set the bimodal predictor table size to be<size> entries.

-bpred:2lev <l1size> <l2size> <hist_size> <xor>

specify the 2-level adaptive predictor.<l1size> speci es the number of entries inthe rst-level table, <l2size> speci es thenumber of entries in the second-level table,<hist_size> speci es the history width, and<xor> allows you to xor the history and theaddress in the second level of the predictor.This organization is depicted in Figure6. InTable2 we show how these parameters cor-respond to modern prediction schemes. Thedefault settings for the four parameters are 1,1024, 8, and 0, respectively.

-bpred:comb <size>

set the meta-table size of the combined pre-dictor to be <size> entries. The default is1024.

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