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Implement jump tables (#453)

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* Add 'jump_table_entry' and 'indirect_jump' instructions.

* Update CodeSink to keep track of code size. Pretty up clif-util's disassembly output.

* Only disassemble the machine portion of output. Pretty print the read-only data after it.

* Update switch frontend code to use new br_table instruction w/ default.
This commit is contained in:
Tyler McMullen
2018-10-03 11:04:21 -06:00
committed by Dan Gohman
parent de1d82b4ba
commit 79cea5e18b
39 changed files with 627 additions and 100 deletions
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5
lib/codegen/meta-python/base/formats.py
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@@ -50,7 +50,10 @@ Branch = InstructionFormat(VALUE, ebb, VARIABLE_ARGS)
BranchInt = InstructionFormat(intcc, VALUE, ebb, VARIABLE_ARGS)
BranchFloat = InstructionFormat(floatcc, VALUE, ebb, VARIABLE_ARGS)
BranchIcmp = InstructionFormat(intcc, VALUE, VALUE, ebb, VARIABLE_ARGS)
BranchTable = InstructionFormat(VALUE, entities.jump_table)
BranchTable = InstructionFormat(VALUE, ebb, entities.jump_table)
BranchTableEntry = InstructionFormat(VALUE, VALUE, uimm8, entities.jump_table)
BranchTableBase = InstructionFormat(entities.jump_table)
IndirectJump = InstructionFormat(VALUE, entities.jump_table)
Call = InstructionFormat(func_ref, VARIABLE_ARGS)
CallIndirect = InstructionFormat(sig_ref, VALUE, VARIABLE_ARGS)