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[PowerPC][NFC]Add testcase for STWU scheduling check

Description

[PowerPC][NFC]Add testcase for STWU scheduling check

This patch add a STWU testcase for scheduling check.

Currently P7/P8 which use itineraries are missing IIC_LdStStoreUpd,
We use CHECK-ITIN prefix to check P7/P8, then use default for P9 (and future).

We will fix the missing itineraries of IIC_LdStStoreUpd in following patch,
and update this testcase to show the scheduling difference only there.

Differential Revision: https://reviews.llvm.org/D54699

Details

Committed
jsjiNov 20 2018, 6:55 AM
Differential Revision
D54699: [PowerPC][NFC]Add testcase for STWU scheduling check
Parents
rL347309: [llvm-exegesis][NFC] Some code style cleanup
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