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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.values
+10 -10
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@@ -13,14 +13,14 @@ toLong() <v4>: *
x == 0.toLong() <v5>: Boolean NEW: call(x == 0.toLong(), equals|<v2>, <v4>) -> <v5>
sum <v6>: Long NEW: r(sum) -> <v6>
return sum !<v7>: *
if (x == 0.toLong()) return sum !<v7>: * COPY
x <v8>: Long NEW: r(x) -> <v8>
1 <v9>: Int NEW: r(1) -> <v9>
x - 1 <v10>: Long NEW: call(x - 1, minus|<v8>, <v9>) -> <v10>
sum <v11>: Long NEW: r(sum) -> <v11>
x <v12>: Long NEW: r(x) -> <v12>
sum + x <v13>: Long NEW: call(sum + x, plus|<v11>, <v12>) -> <v13>
sum(x - 1, sum + x) <v14>: Long NEW: call(sum(x - 1, sum + x), sum|<v10>, <v13>) -> <v14>
return sum(x - 1, sum + x) !<v15>: *
{ if (x == 0.toLong()) return sum return sum(x - 1, sum + x) } !<v15>: * COPY
if (x == 0.toLong()) return sum <v8>: * NEW: merge(if (x == 0.toLong()) return sum|!<v7>) -> <v8>
x <v9>: Long NEW: r(x) -> <v9>
1 <v10>: Int NEW: r(1) -> <v10>
x - 1 <v11>: Long NEW: call(x - 1, minus|<v9>, <v10>) -> <v11>
sum <v12>: Long NEW: r(sum) -> <v12>
x <v13>: Long NEW: r(x) -> <v13>
sum + x <v14>: Long NEW: call(sum + x, plus|<v12>, <v13>) -> <v14>
sum(x - 1, sum + x) <v15>: Long NEW: call(sum(x - 1, sum + x), sum|<v11>, <v14>) -> <v15>
return sum(x - 1, sum + x) !<v16>: *
{ if (x == 0.toLong()) return sum return sum(x - 1, sum + x) } !<v16>: * COPY
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