1098eafb45
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.
117 lines
2.3 KiB
Plaintext
117 lines
2.3 KiB
Plaintext
; Parsing branches and jumps.
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test cat
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; Jumps with no arguments. The '()' empty argument list is optional.
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function %minimal() {
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ebb0:
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jump ebb1
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ebb1:
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jump ebb0()
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}
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; sameln: function %minimal() fast {
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; nextln: ebb0:
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; nextln: jump ebb1
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; nextln:
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; nextln: ebb1:
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; nextln: jump ebb0
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; nextln: }
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; Jumps with 1 arg.
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function %onearg(i32) {
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ebb0(v90: i32):
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jump ebb1(v90)
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ebb1(v91: i32):
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jump ebb0(v91)
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}
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; sameln: function %onearg(i32) fast {
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; nextln: ebb0(v90: i32):
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; nextln: jump ebb1(v90)
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; nextln:
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; nextln: ebb1(v91: i32):
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; nextln: jump ebb0(v91)
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; nextln: }
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; Jumps with 2 args.
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function %twoargs(i32, f32) {
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ebb0(v90: i32, v91: f32):
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jump ebb1(v90, v91)
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ebb1(v92: i32, v93: f32):
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jump ebb0(v92, v93)
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}
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; sameln: function %twoargs(i32, f32) fast {
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; nextln: ebb0(v90: i32, v91: f32):
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; nextln: jump ebb1(v90, v91)
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; nextln:
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; nextln: ebb1(v92: i32, v93: f32):
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; nextln: jump ebb0(v92, v93)
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; nextln: }
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; Branches with no arguments. The '()' empty argument list is optional.
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function %minimal(i32) {
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ebb0(v90: i32):
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brz v90, ebb1
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ebb1:
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brnz v90, ebb1()
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}
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; sameln: function %minimal(i32) fast {
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; nextln: ebb0(v90: i32):
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; nextln: brz v90, ebb1
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; nextln:
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; nextln: ebb1:
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; nextln: brnz.i32 v90, ebb1
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; nextln: }
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function %twoargs(i32, f32) {
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ebb0(v90: i32, v91: f32):
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brz v90, ebb1(v90, v91)
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ebb1(v92: i32, v93: f32):
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brnz v90, ebb0(v92, v93)
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}
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; sameln: function %twoargs(i32, f32) fast {
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; nextln: ebb0(v90: i32, v91: f32):
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; nextln: brz v90, ebb1(v90, v91)
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; nextln:
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; nextln: ebb1(v92: i32, v93: f32):
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; nextln: brnz.i32 v90, ebb0(v92, v93)
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; nextln: }
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function %jumptable(i32) {
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jt200 = jump_table []
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jt2 = jump_table [ebb10, ebb40, ebb20, ebb30]
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ebb10(v3: i32):
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br_table v3, ebb50, jt2
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ebb20:
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trap user2
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ebb30:
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trap user3
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ebb40:
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trap user4
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ebb50:
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trap user1
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}
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; sameln: function %jumptable(i32) fast {
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; check: jt2 = jump_table [ebb10, ebb40, ebb20, ebb30]
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; check: jt200 = jump_table []
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; check: ebb10(v3: i32):
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; nextln: br_table v3, ebb50, jt2
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; nextln:
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; nextln: ebb20:
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; nextln: trap user2
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; nextln:
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; nextln: ebb30:
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; nextln: trap user3
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; nextln:
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; nextln: ebb40:
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; nextln: trap user4
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; nextln:
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; nextln: ebb50:
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; nextln: trap user1
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; nextln: }
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