[InstCombine, InstSimplify] (re)move tests, regenerate checks; NFC

Description

[InstCombine, InstSimplify] (re)move tests, regenerate checks; NFC

The InstCombine integer mul test file had tests that belong in InstSimplify
(including fmul tests). Move things to where they belong and auto-generate
complete checks for everything.

Details

Committed
spatelTue, Feb 13, 10:22 AM
Parents
rL325036: [Debugify] Avoid verifier failure on non-definition subprograms
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