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Add a 'regalloc' filetest command.

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Run functions through the register allocator, and then filecheck.
This commit is contained in:
Jakob Stoklund Olesen
2017-02-17 17:07:08 -08:00
parent ccda0a192c
commit 4ba5cfeed3
4 changed files with 88 additions and 4 deletions
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14
docs/testing.rst
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@@ -300,3 +300,17 @@ Legalize each function for the specified target ISA and run the resulting
function through filecheck. This test command can be used to validate the
encodings selected for legal instructions as well as the instruction
transformations performed by the legalizer.
`test regalloc`
---------------
Test the register allocator.
First, each function is legalized for the specified target ISA. This is
required for register allocation since the instruction encodings provide
register class constraints to the register allocator.
Second, the register allocator is run on the function, inserting spill code and
assigning registers and stack slots to all values.
The resulting function is then run through filecheck.