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January 18, 2020 21:37
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Dart Internals - Getters Setters VM Example (compiled to IL flow graph)
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| *** BEGIN CFG | |
| Unoptimized Compilation | |
| ==== file:///Users/vadimlukicev/dev/getters_setters/main.dart_::_main_main | |
| B0[graph]:0 | |
| B1[function entry]:2 | |
| t0 <- LoadLocal(:arg_desc @0) | |
| t0 <- LoadField(t0 . ArgumentsDescriptor.type_args_len {final}) | |
| t1 <- Constant(#0) | |
| Branch if StrictCompare:8(===, t0, t1) goto (4, 5) | |
| B4[target]:12 | |
| goto:16 B3 | |
| B3[join]:6 pred(B4) | |
| t0 <- LoadLocal(:arg_desc @0) | |
| t0 <- LoadField(t0 . ArgumentsDescriptor.count {final}) | |
| t1 <- LoadLocal(:t0 @-4) | |
| t2 <- Constant(#1) | |
| Branch if StrictCompare:22(===, t1, t2) goto (7, 8) | |
| B7[target]:26 | |
| t1 <- LoadLocal(:arg_desc @0) | |
| t1 <- LoadField(t1 . ArgumentsDescriptor.positional_count {final}) | |
| Branch if StrictCompare:30(===, t0, t1) goto (9, 10) | |
| B9[target]:34 | |
| goto:42 B6 | |
| B6[join]:20 pred(B9) | |
| t0 <- LoadLocal(:closure @1) | |
| t0 <- LoadField(t0 . Closure.context {final}) | |
| StoreLocal(:current_context_var @-1, t0) | |
| goto:46 B11 | |
| B11[join]:44 pred(B6) | |
| Constant(#0) | |
| CheckStackOverflow:48(stack=0, loop=0) | |
| goto:60 B12 | |
| B10[target]:36 | |
| goto:40 B2 | |
| B8[target]:28 | |
| goto:38 B2 | |
| B5[target]:14 | |
| goto:18 B2 | |
| B2[join]:4 pred(B5, B8, B10) | |
| t0 <- LoadLocal(:arg_desc @0) | |
| TailCall(CallClosureNoSuchMethod(t0)) | |
| B13[function entry]:58 | |
| Constant(#1) | |
| CheckStackOverflow:54(stack=0, loop=0) | |
| goto:62 B12 | |
| B12[join]:56 pred(B11, B13) | |
| t0 <- StaticCall:50( main<0> ) | |
| Return:52(t0) | |
| *** END CFG | |
| *** BEGIN CFG | |
| Unoptimized Compilation | |
| ==== file:///Users/vadimlukicev/dev/getters_setters/main.dart_::_main | |
| B0[graph]:0 | |
| B1[function entry]:2 | |
| CheckStackOverflow:8(stack=0, loop=0) | |
| DebugStepCheck:10() | |
| t0 <- AllocateObject(A) | |
| t1 <- LoadLocal(:t0 @-4) | |
| PushArgument(t1) | |
| StaticCall:12( A.<0> t1) | |
| StoreLocal(a @-1, t0) | |
| t0 <- MakeTemp() | |
| t1 <- LoadLocal(a @-1) | |
| PushArgument(t1) | |
| t2 <- Constant(#propA) | |
| t2 <- StoreLocal(:t0 @-4, t2) | |
| PushArgument(t2) | |
| InstanceCall:14( set:prop<0>, t1, t2) | |
| DropTemps(1) | |
| t0 <- LoadLocal(a @-1) | |
| PushArgument(t0) | |
| t0 <- InstanceCall:16( get:prop<0>, t0) | |
| PushArgument(t0) | |
| StaticCall:18( print<0> t0) | |
| t0 <- AllocateObject(B) | |
| t1 <- LoadLocal(:t0 @-4) | |
| PushArgument(t1) | |
| StaticCall:20( B.<0> t1) | |
| StoreLocal(b @-2, t0) | |
| t0 <- MakeTemp() | |
| t1 <- LoadLocal(b @-2) | |
| PushArgument(t1) | |
| t2 <- Constant(#propB) | |
| t2 <- StoreLocal(:t0 @-4, t2) | |
| PushArgument(t2) | |
| InstanceCall:22( set:prop<0>, t1, t2) | |
| DropTemps(1) | |
| t0 <- LoadLocal(b @-2) | |
| PushArgument(t0) | |
| t0 <- InstanceCall:24( get:prop<0>, t0) | |
| PushArgument(t0) | |
| StaticCall:26( print<0> t0) | |
| t0 <- AllocateObject(C) | |
| t1 <- LoadLocal(:t0 @-4) | |
| PushArgument(t1) | |
| StaticCall:28( C.<0> t1) | |
| StoreLocal(c @-3, t0) | |
| t0 <- LoadLocal(c @-3) | |
| PushArgument(t0) | |
| t0 <- InstanceCall:30( get:prop<0>, t0) | |
| PushArgument(t0) | |
| StaticCall:32( print<0> t0) | |
| t0 <- Constant(#null) | |
| DebugStepCheck:34() | |
| Return:36(t0) | |
| *** END CFG | |
| *** BEGIN CFG | |
| Unoptimized Compilation | |
| ==== file:///Users/vadimlukicev/dev/getters_setters/main.dart_A_A. | |
| B0[graph]:0 | |
| B1[function entry]:2 | |
| CheckStackOverflow:8(stack=0, loop=0) | |
| t0 <- LoadLocal(this @1) | |
| PushArgument(t0) | |
| StaticCall:10( Object.<0> t0, recognized_kind = ObjectConstructor) | |
| t0 <- Constant(#null) | |
| Return:12(t0) | |
| *** END CFG | |
| *** BEGIN CFG | |
| Unoptimized Compilation | |
| ==== file:///Users/vadimlukicev/dev/getters_setters/main.dart_A_set_prop | |
| B0[graph]:0 | |
| B1[function entry]:2 | |
| t0 <- LoadLocal(this @2) | |
| t1 <- LoadLocal(value @1) | |
| t2 <- LoadLocal(:t1 @-3) | |
| GuardFieldClass:4(prop <nullable Null>, t2) | |
| StoreInstanceField(t0 . prop = t1) | |
| t0 <- Constant(#null) | |
| Return:8(t0) | |
| *** END CFG | |
| *** BEGIN CFG | |
| Unoptimized Compilation | |
| ==== file:///Users/vadimlukicev/dev/getters_setters/main.dart_A_get_prop | |
| B0[graph]:0 | |
| B1[function entry]:2 | |
| t0 <- LoadLocal(this @1) | |
| t0 <- LoadField(t0 . prop) | |
| Return:4(t0) | |
| *** END CFG | |
| propA | |
| *** BEGIN CFG | |
| Unoptimized Compilation | |
| ==== file:///Users/vadimlukicev/dev/getters_setters/main.dart_B_B. | |
| B0[graph]:0 | |
| B1[function entry]:2 | |
| CheckStackOverflow:8(stack=0, loop=0) | |
| t0 <- LoadLocal(this @1) | |
| PushArgument(t0) | |
| StaticCall:10( Object.<0> t0, recognized_kind = ObjectConstructor) | |
| t0 <- Constant(#null) | |
| Return:12(t0) | |
| *** END CFG | |
| *** BEGIN CFG | |
| Unoptimized Compilation | |
| ==== file:///Users/vadimlukicev/dev/getters_setters/main.dart_B_set_prop | |
| B0[graph]:0 | |
| B1[function entry]:2 | |
| CheckStackOverflow:8(stack=0, loop=0) | |
| DebugStepCheck:10() | |
| t0 <- MakeTemp() | |
| t1 <- LoadLocal(this @2) | |
| PushArgument(t1) | |
| t2 <- LoadLocal(value @1) | |
| t2 <- StoreLocal(:t0 @-2, t2) | |
| PushArgument(t2) | |
| InstanceCall:12( set:_prop@19294495<0>, t1, t2) | |
| DebugStepCheck:14() | |
| Return:16(t0) | |
| *** END CFG | |
| *** BEGIN CFG | |
| Unoptimized Compilation | |
| ==== file:///Users/vadimlukicev/dev/getters_setters/main.dart_B_set__prop@19294495 | |
| B0[graph]:0 | |
| B1[function entry]:2 | |
| t0 <- LoadLocal(this @2) | |
| t1 <- LoadLocal(value @1) | |
| t2 <- LoadLocal(:t1 @-3) | |
| GuardFieldClass:4(_prop@19294495 <nullable Null>, t2) | |
| StoreInstanceField(t0 . _prop@19294495 = t1) | |
| t0 <- Constant(#null) | |
| Return:8(t0) | |
| *** END CFG | |
| *** BEGIN CFG | |
| Unoptimized Compilation | |
| ==== file:///Users/vadimlukicev/dev/getters_setters/main.dart_B_get_prop | |
| B0[graph]:0 | |
| B1[function entry]:2 | |
| CheckStackOverflow:8(stack=0, loop=0) | |
| DebugStepCheck:10() | |
| t0 <- LoadLocal(this @1) | |
| PushArgument(t0) | |
| t0 <- InstanceCall:12( get:_prop@19294495<0>, t0) | |
| DebugStepCheck:14() | |
| Return:16(t0) | |
| *** END CFG | |
| *** BEGIN CFG | |
| Unoptimized Compilation | |
| ==== file:///Users/vadimlukicev/dev/getters_setters/main.dart_B_get__prop@19294495 | |
| B0[graph]:0 | |
| B1[function entry]:2 | |
| t0 <- LoadLocal(this @1) | |
| t0 <- LoadField(t0 . _prop@19294495) | |
| Return:4(t0) | |
| *** END CFG | |
| propB | |
| *** BEGIN CFG | |
| Unoptimized Compilation | |
| ==== file:///Users/vadimlukicev/dev/getters_setters/main.dart_C_C. | |
| B0[graph]:0 | |
| B1[function entry]:2 | |
| CheckStackOverflow:8(stack=0, loop=0) | |
| t0 <- LoadLocal(this @1) | |
| PushArgument(t0) | |
| StaticCall:10( Object.<0> t0, recognized_kind = ObjectConstructor) | |
| t0 <- Constant(#null) | |
| Return:12(t0) | |
| *** END CFG | |
| *** BEGIN CFG |
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