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Remove the concept of non-dense jump tables.

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WebAssembly doesn't have non-dense jump tables, and higher-level users
are better served by the facilities in lib/frontend/src/switch.rs for
working with non-dense switches.

This eliminates the concept of "absent" jump table entries, which
were represented as "0" in the text format.

Also, jump table contents are now enclosed in `[` and `]`, so that
we can unambiguously display empty jump tables. Previously, empty jump
tables were displayed as if they had a single absent entry.
This commit is contained in:
Dan Gohman
2018-10-04 10:35:31 -07:00
parent dc9221a70c
commit 1098eafb45
22 changed files with 113 additions and 208 deletions
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11
lib/filetests/src/test_binemit.rs
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@@ -291,14 +291,9 @@ impl SubTest for TestBinEmit {
for (jt, jt_data) in func.jump_tables.iter() {
let jt_offset = func.jt_offsets[jt];
for idx in 0..jt_data.len() {
match jt_data.get_entry(idx) {
Some(ebb) => {
let rel_offset: i32 = func.offsets[ebb] as i32 - jt_offset as i32;
sink.put4(rel_offset as u32)
}
None => sink.put4(0),
}
for ebb in jt_data.iter() {
let rel_offset: i32 = func.offsets[*ebb] as i32 - jt_offset as i32;
sink.put4(rel_offset as u32)
}
}