Pre-commit preliminary tests to check for Non-SSA Exec mask instructions

[lalaniket8]

Pre-commit to check for exec mask instruction changes caused by #789

[github-actions]

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[z1-cciauto]

PSDB Build Link: http://mlse-bdc-20dd129:8065/#/builders/10/builds/36

[cdevadas]

I think this is the good time to modify the original tests to not have PHIs. Most of the tests in this file are initially written by considering the SSA form. We are scheduling this pass in the non-SSA pipeline. In that way, the input to this pass will be in the non-SSA form. Your other patch (#789) should have the getRequiredProperties() to check for setNoPHIs() in the MF properties to ensure the input MF to the wave-transform pass is in the non-SSA form.

[lalaniket8]

We need the tests in this pre-commit to be in SSA, so that it can run with the original WaveTransform pass. Even though the pass is later in the pipeline where PHI-elimination has happened, the pass itself cannot digest nonSSA code given to it.
The support for NonSSA input is added in PR : #789

The same PR should have SSA -> NonSSA changes in the tests.

[cmc-rep]

This looks good to me. This is testing the existing WaveTransform code, which uses SSA. Later on, these tests will be updated (both input and output) with Aniket's code change

[z1-cciauto]

PSDB Build Link: http://mlse-bdc-20dd129:8065/#/builders/10/builds/38

[cdevadas]

LGTM except for the suggestions.

[z1-cciauto]

PSDB Build Link: http://mlse-bdc-20dd129:8065/#/builders/10/builds/39