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infer_clone/infer/tests/codetoanalyze/c/frontend/arithmetic/compound_assignment.c.dot

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Add @generated comment to icfg.dot files Reviewed By: jvillard Differential Revision: D3358243 fbshipit-source-id: a47cc01
9 years ago
/* @generated */
[cfg] rename iCFG to cfg in dotty files Summary: Not sure what an "iCFG" is but the dotty is only about CFGs anyway. Diff obtained by mass-`sed`. Reviewed By: sblackshear Differential Revision: D6324280 fbshipit-source-id: b7603bb
7 years ago
digraph cfg {
Get rid of Declare_locals Reviewed By: jeremydubreil Differential Revision: D9234331 fbshipit-source-id: 70443eabe
6 years ago
"main.fad58de7366495db4650cfefac2fcd61_1" [label="1: Start main\nFormals: \nLocals: b:int x:double \n " color=yellow style=filled]
initial synchronization
10 years ago
Sort nodes when printing cfg to dot file Summary: Currently cfg nodes are written into dot files in whatever order they appear in a hash table. This seems unnecessarily sensitive, so this diff sorts the nodes. Reviewed By: dulmarod Differential Revision: D4232377 fbshipit-source-id: a907cc6
8 years ago
"main.fad58de7366495db4650cfefac2fcd61_1" -> "main.fad58de7366495db4650cfefac2fcd61_15" ;
"main.fad58de7366495db4650cfefac2fcd61_2" [label="2: Exit main \n " color=yellow style=filled]
initial synchronization
10 years ago
[cfg] print dotty *after* pre-analysis Summary: Useful to understand the changes in the pre-analysis, or to inspect the CFG that checkers actually get. This means that the pre-analysis always runs when we output the dotty, but I don't really see a reason why not. In fact, we could probably *always* store the CFGs as pre-analysed. Reviewed By: mbouaziz Differential Revision: D13102952 fbshipit-source-id: 89f3102ec
6 years ago
"main.fad58de7366495db4650cfefac2fcd61_3" [label="3: Return Stmt \n *&return:int=0 [line 21, column 3]\n APPLY_ABSTRACTION; [line 21, column 3]\n " shape="box"]
initial synchronization
10 years ago
Sort nodes when printing cfg to dot file Summary: Currently cfg nodes are written into dot files in whatever order they appear in a hash table. This seems unnecessarily sensitive, so this diff sorts the nodes. Reviewed By: dulmarod Differential Revision: D4232377 fbshipit-source-id: a907cc6
8 years ago
"main.fad58de7366495db4650cfefac2fcd61_3" -> "main.fad58de7366495db4650cfefac2fcd61_2" ;
[preanalysis] do not delay killing variables taken by reference Summary: Before, the liveness pre-analysis would place extra instructions in the CFG for either: 1. marking an `Ident.t` as dead, or 2. marking a `Pvar.t` as `= 0` But we have no way of marking pvars dead without setting them to 0. This is bad because setting pvars to 0 is not possible everywhere they are dead. Indeed, we only do it when we haven't seen their address being taken anyway. This prevents the following situation, recorded in our tests: ``` int address_taken() { int** x; int* y; int i = 7; y = &i; x = &y; // if we don't reason about taken addresses while adding nullify instructions, // we'll add // `nullify(y)` here and report a false NPE on the next line return **x; } ``` So we want to mark pvars as dead without nullifying them. This diff extends the `Remove_temps` SIL instruction to accept pvars as well, and so renames it to `ExitScope`. Reviewed By: da319 Differential Revision: D13102953 fbshipit-source-id: aa7f03a52
6 years ago
"main.fad58de7366495db4650cfefac2fcd61_4" [label="4: BinaryOperatorStmt: XorAssign \n n$0=*&b:int [line 20, column 3]\n *&b:int=(n$0 ^ 1) [line 20, column 3]\n NULLIFY(&b); [line 20, column 3]\n EXIT_SCOPE(n$0,b); [line 20, column 3]\n " shape="box"]
initial synchronization
10 years ago
Sort nodes when printing cfg to dot file Summary: Currently cfg nodes are written into dot files in whatever order they appear in a hash table. This seems unnecessarily sensitive, so this diff sorts the nodes. Reviewed By: dulmarod Differential Revision: D4232377 fbshipit-source-id: a907cc6
8 years ago
"main.fad58de7366495db4650cfefac2fcd61_4" -> "main.fad58de7366495db4650cfefac2fcd61_3" ;
[preanalysis] do not delay killing variables taken by reference Summary: Before, the liveness pre-analysis would place extra instructions in the CFG for either: 1. marking an `Ident.t` as dead, or 2. marking a `Pvar.t` as `= 0` But we have no way of marking pvars dead without setting them to 0. This is bad because setting pvars to 0 is not possible everywhere they are dead. Indeed, we only do it when we haven't seen their address being taken anyway. This prevents the following situation, recorded in our tests: ``` int address_taken() { int** x; int* y; int i = 7; y = &i; x = &y; // if we don't reason about taken addresses while adding nullify instructions, // we'll add // `nullify(y)` here and report a false NPE on the next line return **x; } ``` So we want to mark pvars as dead without nullifying them. This diff extends the `Remove_temps` SIL instruction to accept pvars as well, and so renames it to `ExitScope`. Reviewed By: da319 Differential Revision: D13102953 fbshipit-source-id: aa7f03a52
6 years ago
"main.fad58de7366495db4650cfefac2fcd61_5" [label="5: BinaryOperatorStmt: OrAssign \n n$1=*&b:int [line 19, column 3]\n *&b:int=(n$1 | 1) [line 19, column 3]\n EXIT_SCOPE(n$1); [line 19, column 3]\n " shape="box"]
initial synchronization
10 years ago
Sort nodes when printing cfg to dot file Summary: Currently cfg nodes are written into dot files in whatever order they appear in a hash table. This seems unnecessarily sensitive, so this diff sorts the nodes. Reviewed By: dulmarod Differential Revision: D4232377 fbshipit-source-id: a907cc6
8 years ago
"main.fad58de7366495db4650cfefac2fcd61_5" -> "main.fad58de7366495db4650cfefac2fcd61_4" ;
[preanalysis] do not delay killing variables taken by reference Summary: Before, the liveness pre-analysis would place extra instructions in the CFG for either: 1. marking an `Ident.t` as dead, or 2. marking a `Pvar.t` as `= 0` But we have no way of marking pvars dead without setting them to 0. This is bad because setting pvars to 0 is not possible everywhere they are dead. Indeed, we only do it when we haven't seen their address being taken anyway. This prevents the following situation, recorded in our tests: ``` int address_taken() { int** x; int* y; int i = 7; y = &i; x = &y; // if we don't reason about taken addresses while adding nullify instructions, // we'll add // `nullify(y)` here and report a false NPE on the next line return **x; } ``` So we want to mark pvars as dead without nullifying them. This diff extends the `Remove_temps` SIL instruction to accept pvars as well, and so renames it to `ExitScope`. Reviewed By: da319 Differential Revision: D13102953 fbshipit-source-id: aa7f03a52
6 years ago
"main.fad58de7366495db4650cfefac2fcd61_6" [label="6: BinaryOperatorStmt: AndAssign \n n$2=*&b:int [line 18, column 3]\n *&b:int=(n$2 & 1) [line 18, column 3]\n EXIT_SCOPE(n$2); [line 18, column 3]\n " shape="box"]
initial synchronization
10 years ago
Sort nodes when printing cfg to dot file Summary: Currently cfg nodes are written into dot files in whatever order they appear in a hash table. This seems unnecessarily sensitive, so this diff sorts the nodes. Reviewed By: dulmarod Differential Revision: D4232377 fbshipit-source-id: a907cc6
8 years ago
"main.fad58de7366495db4650cfefac2fcd61_6" -> "main.fad58de7366495db4650cfefac2fcd61_5" ;
[preanalysis] do not delay killing variables taken by reference Summary: Before, the liveness pre-analysis would place extra instructions in the CFG for either: 1. marking an `Ident.t` as dead, or 2. marking a `Pvar.t` as `= 0` But we have no way of marking pvars dead without setting them to 0. This is bad because setting pvars to 0 is not possible everywhere they are dead. Indeed, we only do it when we haven't seen their address being taken anyway. This prevents the following situation, recorded in our tests: ``` int address_taken() { int** x; int* y; int i = 7; y = &i; x = &y; // if we don't reason about taken addresses while adding nullify instructions, // we'll add // `nullify(y)` here and report a false NPE on the next line return **x; } ``` So we want to mark pvars as dead without nullifying them. This diff extends the `Remove_temps` SIL instruction to accept pvars as well, and so renames it to `ExitScope`. Reviewed By: da319 Differential Revision: D13102953 fbshipit-source-id: aa7f03a52
6 years ago
"main.fad58de7366495db4650cfefac2fcd61_7" [label="7: BinaryOperatorStmt: RemAssing \n n$3=*&b:int [line 17, column 3]\n *&b:int=(n$3 % 1) [line 17, column 3]\n EXIT_SCOPE(n$3); [line 17, column 3]\n " shape="box"]
initial synchronization
10 years ago
Sort nodes when printing cfg to dot file Summary: Currently cfg nodes are written into dot files in whatever order they appear in a hash table. This seems unnecessarily sensitive, so this diff sorts the nodes. Reviewed By: dulmarod Differential Revision: D4232377 fbshipit-source-id: a907cc6
8 years ago
"main.fad58de7366495db4650cfefac2fcd61_7" -> "main.fad58de7366495db4650cfefac2fcd61_6" ;
[preanalysis] do not delay killing variables taken by reference Summary: Before, the liveness pre-analysis would place extra instructions in the CFG for either: 1. marking an `Ident.t` as dead, or 2. marking a `Pvar.t` as `= 0` But we have no way of marking pvars dead without setting them to 0. This is bad because setting pvars to 0 is not possible everywhere they are dead. Indeed, we only do it when we haven't seen their address being taken anyway. This prevents the following situation, recorded in our tests: ``` int address_taken() { int** x; int* y; int i = 7; y = &i; x = &y; // if we don't reason about taken addresses while adding nullify instructions, // we'll add // `nullify(y)` here and report a false NPE on the next line return **x; } ``` So we want to mark pvars as dead without nullifying them. This diff extends the `Remove_temps` SIL instruction to accept pvars as well, and so renames it to `ExitScope`. Reviewed By: da319 Differential Revision: D13102953 fbshipit-source-id: aa7f03a52
6 years ago
"main.fad58de7366495db4650cfefac2fcd61_8" [label="8: BinaryOperatorStmt: ShrAssign \n n$4=*&b:int [line 16, column 3]\n *&b:int=(n$4 >> 1) [line 16, column 3]\n EXIT_SCOPE(n$4); [line 16, column 3]\n " shape="box"]
initial synchronization
10 years ago
[debug][dotty] Fix issue in dotty output where overloaded functions were conflated Reviewed By: jvillard Differential Revision: D4117078 fbshipit-source-id: fdd8e93
8 years ago
"main.fad58de7366495db4650cfefac2fcd61_8" -> "main.fad58de7366495db4650cfefac2fcd61_7" ;
[preanalysis] do not delay killing variables taken by reference Summary: Before, the liveness pre-analysis would place extra instructions in the CFG for either: 1. marking an `Ident.t` as dead, or 2. marking a `Pvar.t` as `= 0` But we have no way of marking pvars dead without setting them to 0. This is bad because setting pvars to 0 is not possible everywhere they are dead. Indeed, we only do it when we haven't seen their address being taken anyway. This prevents the following situation, recorded in our tests: ``` int address_taken() { int** x; int* y; int i = 7; y = &i; x = &y; // if we don't reason about taken addresses while adding nullify instructions, // we'll add // `nullify(y)` here and report a false NPE on the next line return **x; } ``` So we want to mark pvars as dead without nullifying them. This diff extends the `Remove_temps` SIL instruction to accept pvars as well, and so renames it to `ExitScope`. Reviewed By: da319 Differential Revision: D13102953 fbshipit-source-id: aa7f03a52
6 years ago
"main.fad58de7366495db4650cfefac2fcd61_9" [label="9: BinaryOperatorStmt: ShlAssign \n n$5=*&b:int [line 15, column 3]\n *&b:int=(n$5 << 1) [line 15, column 3]\n EXIT_SCOPE(n$5); [line 15, column 3]\n " shape="box"]
initial synchronization
10 years ago
Sort nodes when printing cfg to dot file Summary: Currently cfg nodes are written into dot files in whatever order they appear in a hash table. This seems unnecessarily sensitive, so this diff sorts the nodes. Reviewed By: dulmarod Differential Revision: D4232377 fbshipit-source-id: a907cc6
8 years ago
"main.fad58de7366495db4650cfefac2fcd61_9" -> "main.fad58de7366495db4650cfefac2fcd61_8" ;
[SIL][preanalysis] add call flag for functions treating first formal as return Summary: This helps some checkers and the liveness preanalysis. Reviewed By: da319 Differential Revision: D13102954 fbshipit-source-id: b8d3c5fe2
6 years ago
"main.fad58de7366495db4650cfefac2fcd61_10" [label="10: DeclStmt \n n$6=_fun___variable_initialization(&b:int) assign_last [line 14, column 3]\n *&b:int=1 [line 14, column 3]\n EXIT_SCOPE(n$6); [line 14, column 3]\n " shape="box"]
initial synchronization
10 years ago
Sort nodes when printing cfg to dot file Summary: Currently cfg nodes are written into dot files in whatever order they appear in a hash table. This seems unnecessarily sensitive, so this diff sorts the nodes. Reviewed By: dulmarod Differential Revision: D4232377 fbshipit-source-id: a907cc6
8 years ago
"main.fad58de7366495db4650cfefac2fcd61_10" -> "main.fad58de7366495db4650cfefac2fcd61_9" ;
[preanalysis] do not delay killing variables taken by reference Summary: Before, the liveness pre-analysis would place extra instructions in the CFG for either: 1. marking an `Ident.t` as dead, or 2. marking a `Pvar.t` as `= 0` But we have no way of marking pvars dead without setting them to 0. This is bad because setting pvars to 0 is not possible everywhere they are dead. Indeed, we only do it when we haven't seen their address being taken anyway. This prevents the following situation, recorded in our tests: ``` int address_taken() { int** x; int* y; int i = 7; y = &i; x = &y; // if we don't reason about taken addresses while adding nullify instructions, // we'll add // `nullify(y)` here and report a false NPE on the next line return **x; } ``` So we want to mark pvars as dead without nullifying them. This diff extends the `Remove_temps` SIL instruction to accept pvars as well, and so renames it to `ExitScope`. Reviewed By: da319 Differential Revision: D13102953 fbshipit-source-id: aa7f03a52
6 years ago
"main.fad58de7366495db4650cfefac2fcd61_11" [label="11: BinaryOperatorStmt: MulAssign \n n$7=*&x:double [line 13, column 3]\n *&x:double=(n$7 * 1.) [line 13, column 3]\n NULLIFY(&x); [line 13, column 3]\n EXIT_SCOPE(n$7,x); [line 13, column 3]\n " shape="box"]
initial synchronization
10 years ago
Sort nodes when printing cfg to dot file Summary: Currently cfg nodes are written into dot files in whatever order they appear in a hash table. This seems unnecessarily sensitive, so this diff sorts the nodes. Reviewed By: dulmarod Differential Revision: D4232377 fbshipit-source-id: a907cc6
8 years ago
"main.fad58de7366495db4650cfefac2fcd61_11" -> "main.fad58de7366495db4650cfefac2fcd61_10" ;
[preanalysis] do not delay killing variables taken by reference Summary: Before, the liveness pre-analysis would place extra instructions in the CFG for either: 1. marking an `Ident.t` as dead, or 2. marking a `Pvar.t` as `= 0` But we have no way of marking pvars dead without setting them to 0. This is bad because setting pvars to 0 is not possible everywhere they are dead. Indeed, we only do it when we haven't seen their address being taken anyway. This prevents the following situation, recorded in our tests: ``` int address_taken() { int** x; int* y; int i = 7; y = &i; x = &y; // if we don't reason about taken addresses while adding nullify instructions, // we'll add // `nullify(y)` here and report a false NPE on the next line return **x; } ``` So we want to mark pvars as dead without nullifying them. This diff extends the `Remove_temps` SIL instruction to accept pvars as well, and so renames it to `ExitScope`. Reviewed By: da319 Differential Revision: D13102953 fbshipit-source-id: aa7f03a52
6 years ago
"main.fad58de7366495db4650cfefac2fcd61_12" [label="12: BinaryOperatorStmt: DivAssign \n n$8=*&x:double [line 12, column 3]\n *&x:double=(n$8 / 1.) [line 12, column 3]\n EXIT_SCOPE(n$8); [line 12, column 3]\n " shape="box"]
initial synchronization
10 years ago
Sort nodes when printing cfg to dot file Summary: Currently cfg nodes are written into dot files in whatever order they appear in a hash table. This seems unnecessarily sensitive, so this diff sorts the nodes. Reviewed By: dulmarod Differential Revision: D4232377 fbshipit-source-id: a907cc6
8 years ago
"main.fad58de7366495db4650cfefac2fcd61_12" -> "main.fad58de7366495db4650cfefac2fcd61_11" ;
[preanalysis] do not delay killing variables taken by reference Summary: Before, the liveness pre-analysis would place extra instructions in the CFG for either: 1. marking an `Ident.t` as dead, or 2. marking a `Pvar.t` as `= 0` But we have no way of marking pvars dead without setting them to 0. This is bad because setting pvars to 0 is not possible everywhere they are dead. Indeed, we only do it when we haven't seen their address being taken anyway. This prevents the following situation, recorded in our tests: ``` int address_taken() { int** x; int* y; int i = 7; y = &i; x = &y; // if we don't reason about taken addresses while adding nullify instructions, // we'll add // `nullify(y)` here and report a false NPE on the next line return **x; } ``` So we want to mark pvars as dead without nullifying them. This diff extends the `Remove_temps` SIL instruction to accept pvars as well, and so renames it to `ExitScope`. Reviewed By: da319 Differential Revision: D13102953 fbshipit-source-id: aa7f03a52
6 years ago
"main.fad58de7366495db4650cfefac2fcd61_13" [label="13: BinaryOperatorStmt: SubAssign \n n$9=*&x:double [line 11, column 3]\n *&x:double=(n$9 - 1.) [line 11, column 3]\n EXIT_SCOPE(n$9); [line 11, column 3]\n " shape="box"]
initial synchronization
10 years ago
Sort nodes when printing cfg to dot file Summary: Currently cfg nodes are written into dot files in whatever order they appear in a hash table. This seems unnecessarily sensitive, so this diff sorts the nodes. Reviewed By: dulmarod Differential Revision: D4232377 fbshipit-source-id: a907cc6
8 years ago
"main.fad58de7366495db4650cfefac2fcd61_13" -> "main.fad58de7366495db4650cfefac2fcd61_12" ;
[preanalysis] do not delay killing variables taken by reference Summary: Before, the liveness pre-analysis would place extra instructions in the CFG for either: 1. marking an `Ident.t` as dead, or 2. marking a `Pvar.t` as `= 0` But we have no way of marking pvars dead without setting them to 0. This is bad because setting pvars to 0 is not possible everywhere they are dead. Indeed, we only do it when we haven't seen their address being taken anyway. This prevents the following situation, recorded in our tests: ``` int address_taken() { int** x; int* y; int i = 7; y = &i; x = &y; // if we don't reason about taken addresses while adding nullify instructions, // we'll add // `nullify(y)` here and report a false NPE on the next line return **x; } ``` So we want to mark pvars as dead without nullifying them. This diff extends the `Remove_temps` SIL instruction to accept pvars as well, and so renames it to `ExitScope`. Reviewed By: da319 Differential Revision: D13102953 fbshipit-source-id: aa7f03a52
6 years ago
"main.fad58de7366495db4650cfefac2fcd61_14" [label="14: BinaryOperatorStmt: AddAssign \n n$10=*&x:double [line 10, column 3]\n *&x:double=(n$10 + 1.) [line 10, column 3]\n EXIT_SCOPE(n$10); [line 10, column 3]\n " shape="box"]
initial synchronization
10 years ago
Sort nodes when printing cfg to dot file Summary: Currently cfg nodes are written into dot files in whatever order they appear in a hash table. This seems unnecessarily sensitive, so this diff sorts the nodes. Reviewed By: dulmarod Differential Revision: D4232377 fbshipit-source-id: a907cc6
8 years ago
"main.fad58de7366495db4650cfefac2fcd61_14" -> "main.fad58de7366495db4650cfefac2fcd61_13" ;
[SIL][preanalysis] add call flag for functions treating first formal as return Summary: This helps some checkers and the liveness preanalysis. Reviewed By: da319 Differential Revision: D13102954 fbshipit-source-id: b8d3c5fe2
6 years ago
"main.fad58de7366495db4650cfefac2fcd61_15" [label="15: DeclStmt \n n$11=_fun___variable_initialization(&x:double) assign_last [line 9, column 3]\n *&x:double=1. [line 9, column 3]\n EXIT_SCOPE(n$11); [line 9, column 3]\n " shape="box"]
initial synchronization
10 years ago
Sort nodes when printing cfg to dot file Summary: Currently cfg nodes are written into dot files in whatever order they appear in a hash table. This seems unnecessarily sensitive, so this diff sorts the nodes. Reviewed By: dulmarod Differential Revision: D4232377 fbshipit-source-id: a907cc6
8 years ago
"main.fad58de7366495db4650cfefac2fcd61_15" -> "main.fad58de7366495db4650cfefac2fcd61_14" ;
initial synchronization
10 years ago
}