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Pseudocode: Generate merge instruction regardless of number of branches

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This commit is contained in:
Alexey Sedunov
2014-07-25 20:59:00 +04:00
parent d008cb8c21
commit 9f3ebe5f3b
21 changed files with 525 additions and 500 deletions
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compiler/testData/cfg/tailCalls/sum.instructions
+11 -10
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@@ -24,23 +24,24 @@ L0:
jf(L2|<v5>) NEXT:[read (Unit), r(sum) -> <v6>]
r(sum) -> <v6>
ret(*|<v6>) L1 NEXT:[<END>]
- jmp(L3) NEXT:[r(x) -> <v8>] PREV:[]
- jmp(L3) NEXT:[merge(if (x == 0.toLong()) return sum|!<v7>) -> <v8>] PREV:[]
L2:
read (Unit) PREV:[jf(L2|<v5>)]
L3:
r(x) -> <v8>
r(1) -> <v9>
merge(if (x == 0.toLong()) return sum|!<v7>) -> <v8>
r(x) -> <v9>
r(1) -> <v10>
mark(x - 1)
call(x - 1, minus|<v8>, <v9>) -> <v10>
r(sum) -> <v11>
r(x) -> <v12>
call(x - 1, minus|<v9>, <v10>) -> <v11>
r(sum) -> <v12>
r(x) -> <v13>
mark(sum + x)
call(sum + x, plus|<v11>, <v12>) -> <v13>
call(sum + x, plus|<v12>, <v13>) -> <v14>
mark(sum(x - 1, sum + x))
call(sum(x - 1, sum + x), sum|<v10>, <v13>) -> <v14>
ret(*|<v14>) L1
call(sum(x - 1, sum + x), sum|<v11>, <v14>) -> <v15>
ret(*|<v15>) L1
L1:
1 <END> NEXT:[<SINK>] PREV:[ret(*|<v6>) L1, ret(*|<v14>) L1]
1 <END> NEXT:[<SINK>] PREV:[ret(*|<v6>) L1, ret(*|<v15>) L1]
error:
<ERROR> PREV:[]
sink: