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pass: add PruneSelfMoves cleanup pass (#80)

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In some cases natural use of abstraction in avo programs can lead to redundant move instructions, specifically self-moves such as MOVQ AX, AX. This does not produce incorrect code but it is incorrect and inelegant.

This diff introduces a PruneSelfMoves pass that removes such unnecessary instructions.

Closes #76
This commit is contained in:
Michael McLoughlin
2019-04-14 14:26:28 -07:00
committed by GitHub
parent 5d3176b111
commit 57c23b967e
10 changed files with 196 additions and 25 deletions
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5
tests/fixedbugs/issue76/stub.go Normal file
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// Code generated by command: go run asm.go -out issue76.s -stubs stub.go. DO NOT EDIT.
package issue76
func Issue76(x uint64, y uint64) uint64