We llow forward references to values and EBBs, so it is not possible to rewrite these from the source domain to the in-memory domain during parsing. Instead go through all the instructions after parsing everything and rewrite the value and EBB references when everything has been created and mapped.
25 lines
745 B
Plaintext
25 lines
745 B
Plaintext
; The .cton parser can't preserve the actual entity numbers in the input file
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; since entities are numbered as they are created. For entities declared in the
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; preamble, this is no problem, but for EBB and value references, mapping
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; source numbers to real numbers can be a problem.
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;
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; It is possible to refer to instructions and EBBs that have not yet been
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; defined in the lexical order, so the parser needs to rewrite these references
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; after the fact.
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; Check that defining numbers are rewritten.
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function defs() {
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ebb100(v20: i32):
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v1000 = iconst.i32x8 5
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vx200 = f64const 0x4.0p0
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trap
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}
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; Using values.
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function use_value() {
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ebb100(v20: i32):
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v1000 = iadd_imm v20, 5
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vx200 = iadd v20, v1000
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jump ebb100(v1000)
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}
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