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inst,ir: cancelling inputs (#92)

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Adds support for a `CancellingInputs` instruction flag, to indicate cases like `XORQ R10, R10` where the instruction actually does not depend on the value of `R10` at all.

Closes #89
This commit is contained in:
Michael McLoughlin
2019-07-28 17:58:49 -07:00
committed by GitHub
parent 8f97788836
commit d43efabdbe
16 changed files with 970 additions and 392 deletions
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tests/fixedbugs/issue89/doc.go Normal file
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// Package issue89 tests register allocation with self-cancelling inputs.
package issue89