Files
wasmtime/cranelift/filetests/wasm/control.clif
Tyler McMullen 79cea5e18b Implement jump tables (#453)
* Add 'jump_table_entry' and 'indirect_jump' instructions.

* Update CodeSink to keep track of code size. Pretty up clif-util's disassembly output.

* Only disassemble the machine portion of output. Pretty print the read-only data after it.

* Update switch frontend code to use new br_table instruction w/ default.
2018-10-03 10:04:21 -07:00

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; Test basic code generation for control flow WebAssembly instructions.
test compile
target i686 haswell
target x86_64 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
}
function %undefined() {
ebb0:
trap user0
}
function %br_table(i32) {
jt0 = jump_table ebb3, ebb1, 0, ebb2
ebb0(v0: i32):
br_table v0, ebb4, jt0
ebb4:
trap oob
ebb1:
return
ebb2:
return
ebb3:
return
}