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Start a very simple GVN pass (#79)

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* Skeleton simple_gvn pass.
* Basic testing infrastructure for simple-gvn.
* Add can_load and can_store flags to instructions.
* Move the replace_values function into the DataFlowGraph.
* Make InstructionData derive from Hash, PartialEq, and Eq.
* Make EntityList's hash and eq functions panic.
* Change Ieee32 and Ieee64 to store u32 and u64, respectively.
This commit is contained in:
Dan Gohman
2017-05-18 18:18:57 -07:00
committed by Jakob Stoklund Olesen
parent 0c7b2c7b68
commit dc809628f4
16 changed files with 256 additions and 57 deletions
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8
docs/testing.rst
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@@ -344,3 +344,11 @@ sequences. Instead the test will fail.
Value locations must be present if they are required to compute the binary
bits. Missing value locations will cause the test to crash.
`test simple-gvn`
-----------------
Test the simple GVN pass.
The simple GVN pass is run on each function, and then results are run
through filecheck.