Files
wasmtime/filetests/wasm/control.cton
Jakob Stoklund Olesen 5a81831c69 Don't require that the fallthrough instruction has an encoding.
A fallthrough jump is actually represented as 0 bytes, so no encoding is
needed.

Also allow for unencoded instructions in the generated emit_inst
implementations. The verifier has stricter rules for when this is
allowed.
2017-07-19 09:30:04 -07:00

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; Test basic code generation for control flow WebAssembly instructions.
test compile
set is_64bit=0
isa intel haswell
set is_64bit=1
isa intel haswell
function %br_if(i32) -> i32 {
ebb0(v0: i32):
v1 = iconst.i32 1
brz v0, ebb1(v1)
jump ebb2
ebb1(v2: i32):
return v2
ebb2:
jump ebb1(v0)
}
function %br_if_not(i32) -> i32 {
ebb0(v0: i32):
v1 = iconst.i32 1
brnz v0, ebb1(v0)
jump ebb2
ebb1(v2: i32):
return v2
ebb2:
jump ebb1(v0)
}
function %br_if_fallthrough(i32) -> i32 {
ebb0(v0: i32):
v1 = iconst.i32 1
brz v0, ebb1(v1)
; This jump gets converted to a fallthrough.
jump ebb1(v0)
ebb1(v2: i32):
return v2
}