wasmtime

T0b1/wasmtime

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Author	SHA1	Message	Date
Jakob Stoklund Olesen	12b2af3f8a	Simplify branch arguments after splitting EBB arguments. The EBB argument splitting may generate concat-split dependencies when it repairs branch arguments in EBBs that have not yet been fully legalized. Add a branch argument simplification step that can resolve these dependency chains. This means that all split and concatenation instructions will be dead after legalization for types that have no legal instructions using them.	2017-03-22 15:29:06 -07:00
Jakob Stoklund Olesen	19db81f6a8	Iteratively split EBB arguments. When the legalizer splits a value into halves, it would previously stop if the value was an EBB argument. With this change, we also split EBB arguments and iteratively split arguments on branches to the EBB. The iterative splitting stops when we hit the entry block arguments or an instruction that isn't one of the concatenation instructions.	2017-03-22 13:12:19 -07:00

Author

SHA1

Message

Date

Jakob Stoklund Olesen

12b2af3f8a

Simplify branch arguments after splitting EBB arguments.

The EBB argument splitting may generate concat-split dependencies when
it repairs branch arguments in EBBs that have not yet been fully
legalized. Add a branch argument simplification step that can resolve
these dependency chains.

This means that all split and concatenation instructions will be dead
after legalization for types that have no legal instructions using them.

2017-03-22 15:29:06 -07:00

Jakob Stoklund Olesen

19db81f6a8

Iteratively split EBB arguments.

When the legalizer splits a value into halves, it would previously stop
if the value was an EBB argument. With this change, we also split EBB
arguments and iteratively split arguments on branches to the EBB.

The iterative splitting stops when we hit the entry block arguments or
an instruction that isn't one of the concatenation instructions.

2017-03-22 13:12:19 -07:00

2 Commits