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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/controlStructures/If.instructions
+27 -24
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@@ -30,32 +30,33 @@ L0:
mark("s")
r("s") -> <v2>
w(u|<v2>)
2 jmp(L3) NEXT:[r(u) -> <v4>]
2 jmp(L3) NEXT:[merge(if (b) { u = "s" }|!<v3>) -> <v4>]
L2:
read (Unit) PREV:[jf(L2|<v1>)]
L3:
r(u) -> <v4> PREV:[jmp(L3), read (Unit)]
merge(if (b) { u = "s" }|!<v3>) -> <v4> PREV:[jmp(L3), read (Unit)]
r(u) -> <v5>
mark(doSmth(u))
call(doSmth(u), doSmth|<v4>) -> <v5>
call(doSmth(u), doSmth|<v5>) -> <v6>
v(var r: String)
mark(if (b) { r = "s" } else { r = "t" })
r(b) -> <v6>
jf(L4|<v6>) NEXT:[mark({ r = "t" }), mark({ r = "s" })]
r(b) -> <v7>
jf(L4|<v7>) NEXT:[mark({ r = "t" }), mark({ r = "s" })]
3 mark({ r = "s" })
mark("s")
r("s") -> <v7>
w(r|<v7>)
2 jmp(L5) NEXT:[merge(if (b) { r = "s" } else { r = "t" }|!<v8>, !<v10>) -> <v11>]
r("s") -> <v8>
w(r|<v8>)
2 jmp(L5) NEXT:[merge(if (b) { r = "s" } else { r = "t" }|!<v9>, !<v11>) -> <v12>]
L4:
3 mark({ r = "t" }) PREV:[jf(L4|<v6>)]
3 mark({ r = "t" }) PREV:[jf(L4|<v7>)]
mark("t")
r("t") -> <v9>
w(r|<v9>)
r("t") -> <v10>
w(r|<v10>)
L5:
2 merge(if (b) { r = "s" } else { r = "t" }|!<v8>, !<v10>) -> <v11> PREV:[jmp(L5), w(r|<v9>)]
r(r) -> <v12>
2 merge(if (b) { r = "s" } else { r = "t" }|!<v9>, !<v11>) -> <v12> PREV:[jmp(L5), w(r|<v10>)]
r(r) -> <v13>
mark(doSmth(r))
call(doSmth(r), doSmth|<v12>) -> <v13>
call(doSmth(r), doSmth|<v13>) -> <v14>
L1:
1 <END> NEXT:[<SINK>]
error:
@@ -89,26 +90,28 @@ L0:
jf(L2|<v2>) NEXT:[read (Unit), mark({ return; })]
3 mark({ return; })
ret L1 NEXT:[<END>]
- 2 jmp(L3) NEXT:[r(i) -> <v4>] PREV:[]
- 2 jmp(L3) NEXT:[merge(if (b) { return; }|!<v3>) -> <v4>] PREV:[]
L2:
read (Unit) PREV:[jf(L2|<v2>)]
L3:
r(i) -> <v4>
merge(if (b) { return; }|!<v3>) -> <v4>
r(i) -> <v5>
mark(doSmth(i))
call(doSmth(i), doSmth|<v4>) -> <v5>
call(doSmth(i), doSmth|<v5>) -> <v6>
mark(if (i is Int) { return; })
mark(i is Int)
r(i) -> <v6>
magic[IS](i is Int|<v6>) -> <v7>
jf(L4|<v7>) NEXT:[read (Unit), mark({ return; })]
r(i) -> <v7>
magic[IS](i is Int|<v7>) -> <v8>
jf(L4|<v8>) NEXT:[read (Unit), mark({ return; })]
3 mark({ return; })
ret L1 NEXT:[<END>]
- 2 jmp(L5) NEXT:[<END>] PREV:[]
- 2 jmp(L5) NEXT:[merge(if (i is Int) { return; }|!<v9>) -> <v10>] PREV:[]
L4:
read (Unit) PREV:[jf(L4|<v7>)]
L1:
read (Unit) PREV:[jf(L4|<v8>)]
L5:
1 <END> NEXT:[<SINK>] PREV:[ret L1, ret L1, read (Unit)]
merge(if (i is Int) { return; }|!<v9>) -> <v10>
L1:
1 <END> NEXT:[<SINK>] PREV:[ret L1, ret L1, merge(if (i is Int) { return; }|!<v9>) -> <v10>]
error:
<ERROR> PREV:[]
sink: