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.
66 lines
882 B
Plaintext
66 lines
882 B
Plaintext
; Test basic code generation for control flow WebAssembly instructions.
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test compile
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target i686 haswell
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target x86_64 haswell
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function %br_if(i32) -> i32 {
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ebb0(v0: i32):
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v1 = iconst.i32 1
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brz v0, ebb1(v1)
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jump ebb2
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ebb1(v2: i32):
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return v2
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ebb2:
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jump ebb1(v0)
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}
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function %br_if_not(i32) -> i32 {
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ebb0(v0: i32):
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v1 = iconst.i32 1
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brnz v0, ebb1(v0)
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jump ebb2
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ebb1(v2: i32):
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return v2
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ebb2:
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jump ebb1(v0)
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}
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function %br_if_fallthrough(i32) -> i32 {
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ebb0(v0: i32):
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v1 = iconst.i32 1
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brz v0, ebb1(v1)
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; This jump gets converted to a fallthrough.
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jump ebb1(v0)
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ebb1(v2: i32):
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return v2
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}
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function %undefined() {
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ebb0:
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trap user0
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}
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function %br_table(i32) {
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jt0 = jump_table [ebb3, ebb1, ebb2]
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ebb0(v0: i32):
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br_table v0, ebb4, jt0
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ebb4:
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trap oob
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ebb1:
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return
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ebb2:
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return
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ebb3:
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return
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}
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