12b2af3f8a
The EBB argument splitting may generate concat-split dependencies when it repairs branch arguments in EBBs that have not yet been fully legalized. Add a branch argument simplification step that can resolve these dependency chains. This means that all split and concatenation instructions will be dead after legalization for types that have no legal instructions using them.
56 lines
1.4 KiB
Plaintext
56 lines
1.4 KiB
Plaintext
; Test the legalization of EBB arguments that are split.
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test legalizer
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isa riscv
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; regex: V=vx?\d+
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function simple(i64, i64) -> i64 {
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ebb0(v1: i64, v2: i64):
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; check: $ebb0($(v1l=$V): i32, $(v1h=$V): i32, $(v2l=$V): i32, $(v2h=$V): i32):
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jump ebb1(v1)
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; check: jump $ebb1($v1l, $v1h)
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ebb1(v3: i64):
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; check: $ebb1($(v3l=$V): i32, $(v3h=$V): i32):
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v4 = band v3, v2
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; check: $(v4l=$V) = band $v3l, $v2l
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; check: $(v4h=$V) = band $v3h, $v2h
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return v4
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; check: return $v4l, $v4h
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}
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function multi(i64) -> i64 {
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ebb1(v1: i64):
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; check: $ebb1($(v1l=$V): i32, $(v1h=$V): i32):
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jump ebb2(v1, v1)
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; check: jump $ebb2($v1l, $v1l, $v1h, $v1h)
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ebb2(v2: i64, v3: i64):
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; check: $ebb2($(v2l=$V): i32, $(v3l=$V): i32, $(v2h=$V): i32, $(v3h=$V): i32):
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jump ebb3(v2)
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; check: jump $ebb3($v2l, $v2h)
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ebb3(v4: i64):
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; check: $ebb3($(v4l=$V): i32, $(v4h=$V): i32):
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v5 = band v4, v3
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; check: $(v5l=$V) = band $v4l, $v3l
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; check: $(v5h=$V) = band $v4h, $v3h
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return v5
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; check: return $v5l, $v5h
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}
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function loop(i64, i64) -> i64 {
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ebb0(v1: i64, v2: i64):
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; check: $ebb0($(v1l=$V): i32, $(v1h=$V): i32, $(v2l=$V): i32, $(v2h=$V): i32):
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jump ebb1(v1)
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; check: jump $ebb1($v1l, $v1h)
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ebb1(v3: i64):
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; check: $ebb1($(v3l=$V): i32, $(v3h=$V): i32):
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v4 = band v3, v2
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; check: $(v4l=$V) = band $v3l, $v2l
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; check: $(v4h=$V) = band $v3h, $v2h
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jump ebb1(v4)
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; check: jump $ebb1($v4l, $v4h)
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}
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