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wasmtime/cranelift/filetests/regalloc/fallthrough-return.clif
Dan Gohman 88bbbca6cd Make regalloc visit fallthrough_return instructions.
Add an explicit "is_ghost" property to selected instructions, and use
that to determine whether reload and coloring should visit instructions.
This allows them to visit fallthrough_return instructions and insert
fills and register moves as needed.
2018-11-07 11:03:23 +01:00

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test regalloc
target x86_64
; Test that fallthrough returns are visited by reload and coloring.
function %foo() -> f64 {
fn0 = %bar()
ebb0:
v0 = f64const 0.0
call fn0()
fallthrough_return v0
}
; check: fill v0
function %foo() -> f64 {
fn0 = %bar() -> f64, f64
ebb0:
v0, v1 = call fn0()
fallthrough_return v1
}
; check: regmove v1, %xmm1 -> %xmm0