From 7edca9823ec8ef0aed10c88fa07ef969792aab77 Mon Sep 17 00:00:00 2001 From: Cliff Click Date: Mon, 19 Oct 2026 14:56:14 -0700 Subject: Split from ch25, SCCP and interprocedural SCCP --- chapter-interprocedural-sccp/Makefile | 186 ++ chapter-interprocedural-sccp/README.ja.md | 33 + chapter-interprocedural-sccp/README.md | 73 + chapter-interprocedural-sccp/docs/24-grammar.ja.md | 168 ++ chapter-interprocedural-sccp/docs/24-grammar.md | 168 ++ chapter-interprocedural-sccp/docs/Makefile | 12 + .../docs/examples/A_helloWorld.smp | 3 + .../docs/examples/BubbleSort.smp | 37 + .../docs/font-awesome-4.7.0.zip | Bin 0 -> 669808 bytes chapter-interprocedural-sccp/docs/ifg_trim.pdf | Bin 0 -> 155190 bytes chapter-interprocedural-sccp/docs/lattice.gv | 203 ++ chapter-interprocedural-sccp/docs/lattice.svg | 691 +++++++ chapter-interprocedural-sccp/docs/lattice2.gv | 85 + chapter-interprocedural-sccp/docs/lattice2.svg | 260 +++ chapter-interprocedural-sccp/docs/pardoe.docx | Bin 0 -> 22583 bytes 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| 19 + .../seaofnodes/simple/node/cpus/arm/NegARM.java | 25 + .../seaofnodes/simple/node/cpus/arm/NewARM.java | 38 + .../seaofnodes/simple/node/cpus/arm/NotARM.java | 28 + .../com/seaofnodes/simple/node/cpus/arm/OrARM.java | 21 + .../seaofnodes/simple/node/cpus/arm/OrIARM.java | 25 + .../seaofnodes/simple/node/cpus/arm/ParmARM.java | 17 + .../seaofnodes/simple/node/cpus/arm/ProjARM.java | 15 + .../seaofnodes/simple/node/cpus/arm/RetARM.java | 16 + .../seaofnodes/simple/node/cpus/arm/SetARM.java | 34 + .../seaofnodes/simple/node/cpus/arm/SplitARM.java | 66 + .../simple/node/cpus/arm/SplitFlagsARM.java | 21 + .../simple/node/cpus/arm/SplitGPRARM.java | 11 + .../seaofnodes/simple/node/cpus/arm/StoreARM.java | 38 + .../seaofnodes/simple/node/cpus/arm/SubARM.java | 20 + .../seaofnodes/simple/node/cpus/arm/SubFARM.java | 19 + .../seaofnodes/simple/node/cpus/arm/SubIARM.java | 29 + .../seaofnodes/simple/node/cpus/arm/TFPARM.java | 57 + .../seaofnodes/simple/node/cpus/arm/TMPARM.java | 55 + 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create mode 100644 chapter-interprocedural-sccp/src/test/java/com/seaofnodes/simple/progs/sort.c create mode 100644 chapter-interprocedural-sccp/src/test/java/com/seaofnodes/simple/progs/stacked_r_10x.c create mode 100644 chapter-interprocedural-sccp/src/test/java/com/seaofnodes/simple/progs/stacked_r_11x.c create mode 100644 chapter-interprocedural-sccp/src/test/java/com/seaofnodes/simple/progs/stacked_r_12x.c create mode 100644 chapter-interprocedural-sccp/src/test/java/com/seaofnodes/simple/progs/stacked_r_13x.c create mode 100644 chapter-interprocedural-sccp/src/test/java/com/seaofnodes/simple/progs/stacked_r_9x.c create mode 100644 chapter-interprocedural-sccp/src/test/java/com/seaofnodes/simple/progs/stringHash.c create mode 100644 chapter-interprocedural-sccp/src/test/java/com/seaofnodes/simple/progs/stringHash.smp create mode 100644 chapter-interprocedural-sccp/src/test/java/com/seaofnodes/simple/progs/stringHash21.smp (limited to 'chapter-interprocedural-sccp') diff --git a/chapter-interprocedural-sccp/Makefile b/chapter-interprocedural-sccp/Makefile new file mode 100644 index 00000000..e02c8096 --- /dev/null +++ b/chapter-interprocedural-sccp/Makefile @@ -0,0 +1,186 @@ +# +# Makefile expects to run at the project root, and not nested inside anywhere +# +# cd $DESK/Simple/chapterXX; make +# +# +# first time only - this is the only thing that hits the Interwebs +# +# make lib +# +# any time you want to nuke everything from space: +# +# make clean tags +# +# run the tests +# +# make tests + +####################################################### +# +# Boilerplate because make syntax isn't the best +# + +# Use bash for recipes +SHELL := /bin/bash + +# Remove target on error (no broken leftover files) +.DELETE_ON_ERROR: + +# Keep partial builds but not partial recipes; keeping them speeds up the next `make` +.NOTINTERMEDIATE: + +# for printing variable values +# usage: make print-VARIABLE +# > VARIABLE = value_of_variable +print-% : ; @echo $* = $($*) + +# literal space +space := $() $() + +# Decide OS-specific questions +# jar-file seperator +ifeq ($(OS),Windows_NT) + SEP = ; +else + SEP = : +endif +# Find a reasonable ctags. +CTAGS = $(shell which ctags) +# Hack for MacOS: /usr/bin/ctags is unfriendly, so look for ctags from brew +ifeq ($(UNAME),Darwin) + CTAGS = $(shell brew list ctags 2> /dev/null | grep bin/ctags) +endif + +# Fun Args to javac. Mostly limit to java8 source definitions, and fairly +# aggressive lint warnings. +JAVAC_ARGS = -g + +# Source code +SIMPLE := com/seaofnodes/simple +SRC := src/main/java +TST := src/test/java +CLZDIR:= build/classes +main_javas := $(wildcard $(SRC)/$(SIMPLE)/*java $(SRC)/$(SIMPLE)/*/*java $(SRC)/$(SIMPLE)/node/cpus/*/*java) +test_javas := $(wildcard $(TST)/$(SIMPLE)/*java $(TST)/$(SIMPLE)/*/*java) +main_classes := $(patsubst $(SRC)/%java,$(CLZDIR)/main/%class,$(main_javas)) +include $(firstword $(wildcard ../graph/graph.mk graph/graph.mk)) +include $(firstword $(wildcard ../print/print.mk print/print.mk)) +include $(firstword $(wildcard ../isa/isa.mk isa/isa.mk)) +test_classes := $(patsubst $(TST)/%java,$(CLZDIR)/test/%class,$(test_javas)) +test_cp := $(patsubst $(TST)/$(SIMPLE)/%.java,com.seaofnodes.simple.%,$(wildcard $(TST)/$(SIMPLE)/*Test.java)) com.seaofnodes.simple.codegen.X86EncodingTest +classes = $(main_classes) $(test_classes) +# All the libraries +libs = $(wildcard lib/*jar) +jars = $(subst $(space),$(SEP),$(libs)) + + +default_targets := $(CLZDIR)/main/.mtag $(CLZDIR)/test/.ttag +# Optionally add ctags to the default target if a reasonable one was found. +ifneq ($(CTAGS),) +default_targets += tags +endif + +default: $(default_targets) + +####################################################### +# Compile the chapter and shared viewer sources together + +$(CLZDIR)/main/.mtag: $(main_javas) Makefile + @[ -d $(CLZDIR)/main ] || mkdir -p $(CLZDIR)/main + @# This crap is really just "javac", but with a beautiful error message. + @# The very very long list of java files is suppressed and counted. + @# The required output "Note: blah blah deprecated blah" is suppressed. + $(file >.argsM.txt,$(main_javas)) + @if [ ! -z "$(main_javas)" ] ; then \ + echo "compiling main because " $< " and " `wc -w < .argsM.txt` " more files" ; \ + if ! javac $(JAVAC_ARGS) -cp "$(CLZDIR)/main$(SEP)$(jars)" -sourcepath $(SRC) -d $(CLZDIR)/main $(main_javas) >& .out.txt ; then \ + cat .out.txt ; \ + exit 1; \ + fi ; \ + rm -rf .out.txt ; \ + fi + @touch $(CLZDIR)/main/.mtag + @rm -f .argsM.txt + +$(main_classes): $(CLZDIR)/main/.mtag + + + +####################################################### + +OODT := $(isa_test_javas) +$(CLZDIR)/test/.ttag: $(test_classes) $(test_javas) $(isa_test_javas) $(CLZDIR)/main/.mtag + @[ -d $(CLZDIR)/test ] || mkdir -p $(CLZDIR)/test + $(file >.argsT.txt,$(OODT)) + @if [ ! -z "$(OODT)" ] ; then \ + echo "compiling test because " $< " and " `wc -w < .argsT.txt` " more files" ; \ + if ! javac $(JAVAC_ARGS) -cp "$(CLZDIR)/test$(SEP)$(CLZDIR)/main$(SEP)$(jars)" -sourcepath $(TST) -d $(CLZDIR)/test $(OODT) >& .out.txt ; then \ + cat .out.txt ; \ + exit 1; \ + fi ; \ + rm -rf .out.txt ; \ + fi + @touch $(CLZDIR)/test/.ttag + @rm -f .argsT.txt + +# Collect just the out-of-date files +$(test_classes): $(CLZDIR)/test/%class: $(TST)/%java + $(eval OODT += $$<) + +####################################################### +# Base launch line for JVM tests +JVM=nice java -ea -cp "$(CLZDIR)/main${SEP}${jars}${SEP}$(CLZDIR)/test" + + +tests: $(CLZDIR)/main/.mtag $(CLZDIR)/test/.ttag + @echo "testing " $(test_cp) + @[ -d build/objs ] || mkdir -p build/objs + @$(JVM) org.junit.runner.JUnitCore $(test_cp) + @$(JVM) org.junit.runner.JUnitCore com.seaofnodes.simple.FuzzerWrap + +fuzzer: $(CLZDIR)/main/.mtag $(CLZDIR)/test/.ttag + @echo "fuzzing " $(test_cp) + @$(JVM) org.junit.runner.JUnitCore com.seaofnodes.simple.FuzzerWrap + +# Build a Simple jar +release: build/release/simple.jar + +# Build a Simple jar +build/release/simple.jar: $(CLZDIR)/main/.mtag $(CLZDIR)/test/.ttag + @echo "jarring " $@ " because " $? + @[ -d $(dir $@) ] || mkdir -p $(dir $@) + @jar cf build/release/simple.jar -C $(CLZDIR)/main . -C $(CLZDIR)/test . -C $(SRC)/$(SIMPLE) . -C $(TST)/$(SIMPLE) . + + +.PHONY: clean +clean: + rm -rf build + rm -f TAGS + (find . -name "*~" -exec rm {} \; 2>/dev/null; exit 0) + +# Download libs from maven +lib: lib/junit-4.12.jar lib/hamcrest-core-1.3.jar + +# Jars +lib/junit-4.12.jar: + @[ -d lib ] || mkdir -p lib + @(cd lib; wget https://repo1.maven.org/maven2/junit/junit/4.12/junit-4.12.jar) + +lib/hamcrest-core-1.3.jar: + @[ -d lib ] || mkdir -p lib + @(cd lib; wget https://repo1.maven.org/maven2/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar) + +# Build emacs tags (part of a tasty emacs ide experience) +tags: $(main_javas) $(test_javas) + @rm -f TAGS + @$(CTAGS) -e --recurse=yes --extra=+q --fields=+fksaiS $(SRC) $(TST) + +spill-stats: $(CLZDIR)/main/.mtag $(CLZDIR)/test/.ttag + @[ -d build/objs ] || mkdir -p build/objs + @$(JVM) com.seaofnodes.simple.SpillStats + +.PHONY: spill-stats + +.PHONY: build +build: $(CLZDIR)/main/.mtag diff --git a/chapter-interprocedural-sccp/README.ja.md b/chapter-interprocedural-sccp/README.ja.md new file mode 100644 index 00000000..21a5a381 --- /dev/null +++ b/chapter-interprocedural-sccp/README.ja.md @@ -0,0 +1,33 @@ +# 関数間の SCCP + +[English](README.md) | 日本語 + +[前: 関数内の SCCP](../chapter-sccp/README.ja.md) | +[章の分割案](../docs/chapter-split.md) + +前の章では関数ごとに保守的な呼び出し境界で解析しました。この章では +呼び出し辺を発見しながら、同じワークリストで関数間の値を伝播します。 +最新の説明と検証方法は [英語版](README.md) を参照してください。 + +## 呼び出しグラフの発見 + +**Simple** では、ここでもほぼ何もせず、SCCP を手続き間で実行します。`CallNode` は `FunNode` を呼び、`ReturnNode` は `CallEndNode` に戻り、まったく通常の方法で型情報を渡します。ただし問題が1つあります。`Call` と `Fun`、および `Return` と `CallEnd` の間に辺がありません。そのような辺が [呼び出しグラフ](https://en.wikipedia.org/wiki/Call_graph) を構成します。 + +通常の SCCP を拡張し、`Call` の関数ポインタ入力が変わり、新しい関数対象を得る時点を監視します。対象の数は有限なので、前の章で説明した *関数インデックス* で正確に表します。分割コンパイルでは、このコンパイル単位の外で呼ばれる無限の未知関数に対して、特別なインデックスを追加します。 + +`Call` で新しい *fidx* を見つけたら、`Call` と `Fun`、`Return` と `CallEnd` を *リンク* します。このリンクは、`Call` から `Fun`、そして `Call` の引数から `Fun` の `ParmNode` へ CFG 辺を追加したかのように動きます。`FunNode` は `RegionNode` を、`ParmNode` は `PhiNode` を拡張するため、同じ意味規則を使います。`Fun` は呼ばれると到達可能になり、`Parm` はすべての呼び出し引数をマージ（*meet*）します。同様に `CallEnd` は、すべての `Return` の *meet* を計算して、呼ばれたすべての関数の結果をマージします。 + +この *リンク* 段階はアルゴリズムの内部ループにいくつかの検査を加え、正確な呼び出しグラフも構築し、SCCP の手続き間実行を可能にします。進行中に新しい辺を少し発見する以外は、中核アルゴリズムは変わりません。不動点解で停止することが保証され、たとえば特定の呼び出しパラメータが、すべての呼び出し経路で定数、あるいは非 null と発見できることがあります。 + +## 再帰もループ + +再帰には、Parm を通る引数の循環と、Return → CallEnd → 演算 → Phi → Return +という戻り値の循環があります。後者は Parm を通りません。ループの Phi に +加えて Parm と CallEnd にも整数範囲の拡大が必要です。 + +関数アドレスが直接呼び出し以外で使われる場合は、未知の呼び出し元を残します。 +メモリを通した公開範囲の解析は後の章で導入します。 + +このディレクトリで最初に `make lib`、続いて `make tests` を実行してください。 +リポジトリのルートでは +`make tests CHAPTERS=chapter-interprocedural-sccp` を使えます。 diff --git a/chapter-interprocedural-sccp/README.md b/chapter-interprocedural-sccp/README.md new file mode 100644 index 00000000..d3b740a9 --- /dev/null +++ b/chapter-interprocedural-sccp/README.md @@ -0,0 +1,73 @@ +# SCCP Across Functions + +English | [日本語](README.ja.md) + +[Previous: SCCP Within a Function](../chapter-sccp/README.md) | +[Split outline](../docs/chapter-split.md) + +The previous chapter solves each function with conservative call interfaces. +This chapter lets the same worklist discover call edges and propagate values +between functions. It is an independent snapshot of the interprocedural +compiler previously taught in Chapter 24. + +## Discovering calls while solving types + +In **Simple**, we let our SCCP run interprocedurally, again by (nearly) doing nothing: +`CallNodes` call `FunNodes`, `ReturnNodes` return to `CallEndNodes` and they +pass their type information along in exactly the normal way... except for one issue: +there are no edges between `Calls` and `Funs` (nor `Returns` and `CallEnds`). +Such edges make up a [Call Graph](https://en.wikipedia.org/wiki/Call_graph). + +We extend the normal SCCP algorithm to observe when a `Call`s function pointer +input changes - when it picks up new function targets. There are only a finite +number so we represent them exactly with *function indices* as described in an +earlier chapter. (Separate compilation adds a special index for the infinite +unknown functions that are called outside this compilation unit). + +Once we observe a new *fidx* at a `Call`, we *link* the `Call` with the `Fun`, +and the `Return` with the `CallEnd`. Such linkage acts exactly as-if we added +a CFG edge from the `Call` to the `Fun`, and the `Call`s arguments to the +`Fun`s `ParmNodes`. `FunNodes` extend `RegionNodes` (and `ParmNodes` extend +`PhiNodes`), so this linkage uses the same semantics. `Fun`s become reachable +when called; `Parm`s merge (*meet*) all calling arguments, and so on. +Similarly, `CallEnd`s merge results from all called functions, computing the +*meet* over all the `Return`s. + +This *link* step adds a few checks to our algorithm's inner loop, and also +builds a precise Call Graph which allows our SCCP to run interprocedurally. +Other than discovering a few new edges as the algorithm proceeds, the core +algorithm is unchanged. We are guaranteed to terminate with a fixed point +solution, and may discover e.g. certain call parameters are constants (or +e.g. not-null) on all calling paths. + +## Recursion is a loop in disguise + +An argument can flow from a Parm through arithmetic into a recursive call, +then back to the same Parm. A result has a separate cycle: Return -> CallEnd +-> arithmetic -> Phi -> Return. Widening at Parm alone cannot stop a return +range from growing in `f(x-1)+1`. + +Loop Phis, Parms, and CallEnds therefore need widening points. Their comments +cross-reference each other. Constants and above-center ranges remain narrow; +the growing below-center ranges widen within their type bounds. + +`SccpTest` uses the same two calls as the previous chapter and checks that the +parameter now receives [1,2]. `Chapter24Test.testRecursiveWidening` exercises +argument and return cycles at several worklist seeds and evaluates the results. + +## Unknown callers + +A function address that survives outside a direct call may be called by code +we cannot see. Preserve its unknown-caller input. Precise escape analysis is +introduced later; this chapter does not infer exposure through memory. + +## Building and checking + +Run `make lib` once for Java test dependencies, then `make tests` in this +directory. From the repository root, use +`make tests CHAPTERS=chapter-interprocedural-sccp`. +The inherited tests retain their historical class names. + +The [grammar](docs/24-grammar.md) includes chained comparisons inherited from +the extraction baseline. Their planned teaching home is with short-circuit +expressions. Allocator tuning is covered separately by the planned appendix. diff --git a/chapter-interprocedural-sccp/docs/24-grammar.ja.md b/chapter-interprocedural-sccp/docs/24-grammar.ja.md new file mode 100644 index 00000000..fd3fa232 --- /dev/null +++ b/chapter-interprocedural-sccp/docs/24-grammar.ja.md @@ -0,0 +1,168 @@ +# 第24章の文法 + +[English](24-grammar.md) | 日本語 + +```antlrv4 +grammar SimpleLanguage; + +// Name lookup, assignable operands, type compatibility, and access permissions +// are checked by the compiler in addition to these syntax rules. +program : statement* EOF ; + +block : '{' statement* '}' ; + +statement + : block + | returnStatement + | ifStatement + | whileStatement + | forStatement + | breakStatement + | continueStatement + | structDeclaration + | declaration ';' + | assignment ';' + | ';' + ; + +returnStatement : 'return' assignment ';' ; +ifStatement : 'if' '(' assignment ')' statement ('else' statement)? ; +whileStatement : 'while' '(' assignment ')' statement ; +breakStatement : 'break' ';' ; +continueStatement : 'continue' ';' ; + +forStatement + : 'for' '(' (declaration | assignment)? ';' assignment? ';' assignment? ')' statement + ; + +structDeclaration : 'struct' IDENTIFIER '{' structMember* '}' ';' ; +structMember : methodDeclaration | statement ; + +// A method is an ordinary fixed function binding in a struct definition. +// The compiler supplies self; it is not written in parameterList. +// The general declaration rule also admits explicitly typed function fields. +methodDeclaration : 'val' bindingModifier? IDENTIFIER '=' functionExpression ';' ; + +declaration : declarationType binding (',' binding)* ; +declarationType : type | 'var' | 'val' ; +binding : bindingModifier? IDENTIFIER ('=' initializer)? ; +bindingModifier : '!' | '~' ; +// A declaration initializer consisting of the string "C" declares an extern +// symbol. Ordinary strings elsewhere are array-valued expressions. +initializer : assignment ; + +// The prefix qualifies the named struct reference, not an enclosing array. +// Each [] / [~] suffix qualifies its own array layer. ? requires a reference. +type + : functionType + | primitiveType typeSuffix* + | accessModifier? typeName typeSuffix* + ; +accessModifier : '!' | '~' ; +typeSuffix : '?' | '[]' | '[~]' ; +typeName : IDENTIFIER ('.' IDENTIFIER)* ; + +primitiveType + : 'int' | 'i8' | 'i16' | 'i32' | 'i64' + | 'u1' | 'u8' | 'u16' | 'u32' | 'byte' | 'bool' + | 'flt' | 'f32' | 'f64' + ; + +assignment : expression (assignmentOperator assignment)? ; +assignmentOperator + : '=' | '+=' | '-=' | '*=' | '/=' | '&=' | '|=' | '^=' + | '<<=' | '>>=' | '>>>=' + ; + +expression : logicalExpression ('?' assignment (':' assignment)?)? ; + +// Both logical operators short-circuit and associate to the right here. +logicalExpression : bitwiseExpression (('&&' | '||') logicalExpression)? ; + +bitwiseExpression + : equalityExpression (('&' | '|' | '^') equalityExpression)* + ; + +equalityExpression : comparisonExpression (('==' | '!=') comparisonExpression)* ; + +// Chained comparisons test adjacent operands and short-circuit. A chain must +// keep its direction; equality has lower precedence and does not join a chain. +comparisonExpression + : shiftExpression + ( (('<' | '<=') shiftExpression)+ | (('>' | '>=') shiftExpression)+ )? + ; + +shiftExpression + : additiveExpression (('<<' | '>>' | '>>>') additiveExpression)* + ; + +additiveExpression + : multiplicativeExpression (('+' | '-') multiplicativeExpression)* + ; + +multiplicativeExpression + : unaryExpression (('*' | '/') unaryExpression)* + ; + +unaryExpression + : ('-' | '!') unaryExpression + | updateOperator IDENTIFIER + | postfixExpression + ; + +// Prefix updates require a local name; postfix updates also allow fields +// and array elements. All updates require an assignable operand. +updateOperator : '++' | '--' ; +postfixExpression : primaryExpression postfixSuffix* updateOperator? ; +postfixSuffix : '.' IDENTIFIER | '[' assignment ']' | '#' | callSuffix | methodCallSuffix ; + +// For a fixed function-valued member, object.name(args) passes object as self. +// This overlaps ordinary field selection followed by a call syntactically; +// name/type resolution determines which call form applies. +methodCallSuffix : '.' IDENTIFIER callSuffix ; + +primaryExpression + : INTEGER_LITERAL + | FLOAT_LITERAL + | STRING_LITERAL + | CHARACTER_LITERAL + | 'true' + | 'false' + | 'null' + | IDENTIFIER + | '(' assignment ')' + | newExpression + | functionExpression + ; + +// A function is an expression bound with an ordinary declaration. +// Its last statement supplies the implicit result; return can exit earlier. +functionExpression : '{' parameterList? '->' statement* '}' ; +parameterList : (parameter ','?)+ ; +parameter : type bindingModifier? IDENTIFIER ; + +// Function types have unnamed, space-separated argument types. +// {int} is the zero-argument type; its function expression still uses ->. +functionType + : '{' type+ '->' type '}' '?'? + | '{' type '}' '?'? + ; + +callSuffix : '(' argumentList? ')' ; +argumentList : assignment (',' assignment)* ','? ; + +// Struct initialization uses a block; array allocation supplies a length. +newExpression : 'new' type ('[' assignment ']' | block)? ; + +INTEGER_LITERAL : '0' | [1-9] DIGIT* ; +FLOAT_LITERAL : DIGIT+ ('.' DIGIT* ('e' DIGIT+)? | 'e' '-'? DIGIT+) ; +STRING_LITERAL : '"' (ESCAPE | ~["\\])* '"' ; +CHARACTER_LITERAL : '\'' (ESCAPE | ~['\\]) '\'' ; +fragment ESCAPE : '\\' [0ntr\\'"] ; +IDENTIFIER : NON_DIGIT (NON_DIGIT | DIGIT)* ; +fragment NON_DIGIT : [a-zA-Z_] ; +fragment DIGIT : [0-9] ; +WHITESPACE : [ \t\r\n]+ -> skip ; +LINE_COMMENT : '//' ~[\r\n]* -> skip ; +BLOCK_COMMENT : '/*' .*? '*/' -> skip ; +``` diff --git a/chapter-interprocedural-sccp/docs/24-grammar.md b/chapter-interprocedural-sccp/docs/24-grammar.md new file mode 100644 index 00000000..22867355 --- /dev/null +++ b/chapter-interprocedural-sccp/docs/24-grammar.md @@ -0,0 +1,168 @@ +# Grammar for Chapter 24 + +English | [日本語](24-grammar.ja.md) + +```antlrv4 +grammar SimpleLanguage; + +// Name lookup, assignable operands, type compatibility, and access permissions +// are checked by the compiler in addition to these syntax rules. +program : statement* EOF ; + +block : '{' statement* '}' ; + +statement + : block + | returnStatement + | ifStatement + | whileStatement + | forStatement + | breakStatement + | continueStatement + | structDeclaration + | declaration ';' + | assignment ';' + | ';' + ; + +returnStatement : 'return' assignment ';' ; +ifStatement : 'if' '(' assignment ')' statement ('else' statement)? ; +whileStatement : 'while' '(' assignment ')' statement ; +breakStatement : 'break' ';' ; +continueStatement : 'continue' ';' ; + +forStatement + : 'for' '(' (declaration | assignment)? ';' assignment? ';' assignment? ')' statement + ; + +structDeclaration : 'struct' IDENTIFIER '{' structMember* '}' ';' ; +structMember : methodDeclaration | statement ; + +// A method is an ordinary fixed function binding in a struct definition. +// The compiler supplies self; it is not written in parameterList. +// The general declaration rule also admits explicitly typed function fields. +methodDeclaration : 'val' bindingModifier? IDENTIFIER '=' functionExpression ';' ; + +declaration : declarationType binding (',' binding)* ; +declarationType : type | 'var' | 'val' ; +binding : bindingModifier? IDENTIFIER ('=' initializer)? ; +bindingModifier : '!' | '~' ; +// A declaration initializer consisting of the string "C" declares an extern +// symbol. Ordinary strings elsewhere are array-valued expressions. +initializer : assignment ; + +// The prefix qualifies the named struct reference, not an enclosing array. +// Each [] / [~] suffix qualifies its own array layer. ? requires a reference. +type + : functionType + | primitiveType typeSuffix* + | accessModifier? typeName typeSuffix* + ; +accessModifier : '!' | '~' ; +typeSuffix : '?' | '[]' | '[~]' ; +typeName : IDENTIFIER ('.' IDENTIFIER)* ; + +primitiveType + : 'int' | 'i8' | 'i16' | 'i32' | 'i64' + | 'u1' | 'u8' | 'u16' | 'u32' | 'byte' | 'bool' + | 'flt' | 'f32' | 'f64' + ; + +assignment : expression (assignmentOperator assignment)? ; +assignmentOperator + : '=' | '+=' | '-=' | '*=' | '/=' | '&=' | '|=' | '^=' + | '<<=' | '>>=' | '>>>=' + ; + +expression : logicalExpression ('?' assignment (':' assignment)?)? ; + +// Both logical operators short-circuit and associate to the right here. +logicalExpression : bitwiseExpression (('&&' | '||') logicalExpression)? ; + +bitwiseExpression + : equalityExpression (('&' | '|' | '^') equalityExpression)* + ; + +equalityExpression : comparisonExpression (('==' | '!=') comparisonExpression)* ; + +// Chained comparisons test adjacent operands and short-circuit. A chain must +// keep its direction; equality has lower precedence and does not join a chain. +comparisonExpression + : shiftExpression + ( (('<' | '<=') shiftExpression)+ | (('>' | '>=') shiftExpression)+ )? + ; + +shiftExpression + : additiveExpression (('<<' | '>>' | '>>>') additiveExpression)* + ; + +additiveExpression + : multiplicativeExpression (('+' | '-') multiplicativeExpression)* + ; + +multiplicativeExpression + : unaryExpression (('*' | '/') unaryExpression)* + ; + +unaryExpression + : ('-' | '!') unaryExpression + | updateOperator IDENTIFIER + | postfixExpression + ; + +// Prefix updates require a local name; postfix updates also allow fields +// and array elements. All updates require an assignable operand. +updateOperator : '++' | '--' ; +postfixExpression : primaryExpression postfixSuffix* updateOperator? ; +postfixSuffix : '.' IDENTIFIER | '[' assignment ']' | '#' | callSuffix | methodCallSuffix ; + +// For a fixed function-valued member, object.name(args) passes object as self. +// This overlaps ordinary field selection followed by a call syntactically; +// name/type resolution determines which call form applies. +methodCallSuffix : '.' IDENTIFIER callSuffix ; + +primaryExpression + : INTEGER_LITERAL + | FLOAT_LITERAL + | STRING_LITERAL + | CHARACTER_LITERAL + | 'true' + | 'false' + | 'null' + | IDENTIFIER + | '(' assignment ')' + | newExpression + | functionExpression + ; + +// A function is an expression bound with an ordinary declaration. +// Its last statement supplies the implicit result; return can exit earlier. +functionExpression : '{' parameterList? '->' statement* '}' ; +parameterList : (parameter ','?)+ ; +parameter : type bindingModifier? IDENTIFIER ; + +// Function types have unnamed, space-separated argument types. +// {int} is the zero-argument type; its function expression still uses ->. +functionType + : '{' type+ '->' type '}' '?'? + | '{' type '}' '?'? + ; + +callSuffix : '(' argumentList? ')' ; +argumentList : assignment (',' assignment)* ','? ; + +// Struct initialization uses a block; array allocation supplies a length. +newExpression : 'new' type ('[' assignment ']' | block)? ; + +INTEGER_LITERAL : '0' | [1-9] DIGIT* ; +FLOAT_LITERAL : DIGIT+ ('.' DIGIT* ('e' DIGIT+)? | 'e' '-'? DIGIT+) ; +STRING_LITERAL : '"' (ESCAPE | ~["\\])* '"' ; +CHARACTER_LITERAL : '\'' (ESCAPE | ~['\\]) '\'' ; +fragment ESCAPE : '\\' [0ntr\\'"] ; +IDENTIFIER : NON_DIGIT (NON_DIGIT | DIGIT)* ; +fragment NON_DIGIT : [a-zA-Z_] ; +fragment DIGIT : [0-9] ; +WHITESPACE : [ \t\r\n]+ -> skip ; +LINE_COMMENT : '//' ~[\r\n]* -> skip ; +BLOCK_COMMENT : '/*' .*? '*/' -> skip ; +``` diff --git a/chapter-interprocedural-sccp/docs/Makefile b/chapter-interprocedural-sccp/docs/Makefile new file mode 100644 index 00000000..12659b8f --- /dev/null +++ b/chapter-interprocedural-sccp/docs/Makefile @@ -0,0 +1,12 @@ +GV := $(wildcard *.gv) +SVG := $(patsubst %.gv,%.svg,$(GV)) + +.PHONY: all +all: $(SVG) + +%.svg: %.gv + dot -Tsvg $< > $@ + +.PHONY: clean +clean: + @rm -f $(SVG) diff --git a/chapter-interprocedural-sccp/docs/examples/A_helloWorld.smp b/chapter-interprocedural-sccp/docs/examples/A_helloWorld.smp new file mode 100644 index 00000000..07ff935f --- /dev/null +++ b/chapter-interprocedural-sccp/docs/examples/A_helloWorld.smp @@ -0,0 +1,3 @@ +// -*- mode: java; -*- +sys.io.p("Hello, World!"); +return 0; diff --git a/chapter-interprocedural-sccp/docs/examples/BubbleSort.smp b/chapter-interprocedural-sccp/docs/examples/BubbleSort.smp new file mode 100644 index 00000000..938e3181 --- /dev/null +++ b/chapter-interprocedural-sccp/docs/examples/BubbleSort.smp @@ -0,0 +1,37 @@ +// -*- mode: java; -*- + +// An implementation of +// https://sampleprograms.io/projects/bubble-sort/ +// +// Bubble sort, with reading (parsing) and writing (formatting) the data. + +val sort = { !sys.aryi64 nums -> + var done = false; + while( !done ) { + done = true; + for( var i = 0; i < nums.len-1; i++ ) + if( nums.buf[i] > nums.buf[i+1] ) { + int tmp = nums.buf[i]; + nums.buf[i] = nums.buf[i+1]; + nums.buf[i+1] = tmp; // Swap + done = false; + } + } +}; + +// Read from stdin a line of the form "[ 4, 3, 2, 1]" and print it sorted. +val main = { -> + // Parse array of numbers from stdin + var nums = sys.parseAryI64( sys.io.stdin() ); + if( !nums ) { + sys.io.p("stdin must look like [4, 3, 2, 1]"); + return 1; + } + + // Bubble sort array of integers + sort(nums); + + // Print a list of numbers to stdout + nums.str().write(1); + return 0; +}; diff --git a/chapter-interprocedural-sccp/docs/font-awesome-4.7.0.zip b/chapter-interprocedural-sccp/docs/font-awesome-4.7.0.zip new file mode 100644 index 00000000..b6bdb4bd Binary files /dev/null and b/chapter-interprocedural-sccp/docs/font-awesome-4.7.0.zip differ diff --git a/chapter-interprocedural-sccp/docs/ifg_trim.pdf b/chapter-interprocedural-sccp/docs/ifg_trim.pdf new file mode 100644 index 00000000..d952fd4f Binary files /dev/null and b/chapter-interprocedural-sccp/docs/ifg_trim.pdf differ diff --git a/chapter-interprocedural-sccp/docs/lattice.gv b/chapter-interprocedural-sccp/docs/lattice.gv new file mode 100644 index 00000000..8661082d --- /dev/null +++ b/chapter-interprocedural-sccp/docs/lattice.gv @@ -0,0 +1,203 @@ +digraph Lattice { + compound = true; + // Define nodes + splines=false; + node [shape=circle, style=filled]; + nodesep=0.2; + ranksep=0.2; + + TOP [label=<⊤>, fillcolor=black, fontcolor=white]; + BOT [label=<⊥>, fillcolor=black, fontcolor=white]; + + // ---------------------- + // Control + XCTRL [label=<⊤:ctrl>, fillcolor=yellow, shape=oval]; + CTRL [label=<⊥:ctrl>, fillcolor=yellow, shape=oval]; + + TOP -> XCTRL; + XCTRL -> CTRL; + CTRL -> BOT; + + // ---------------------- + // Integers + INT_TOP [label=<⊤:int>, fillcolor=lightblue, shape=oval]; + INT_BOT [label=<⊥:int>, fillcolor=lightblue, shape=oval]; + + INT_HI [label="[min>max]" , fillcolor=lightblue, shape=oval]; + INT_XBOOL [label="[1...0]", fillcolor=lightblue, shape=oval]; + INT_CON [label="constants", fillcolor=lightblue, shape=oval]; + INT_CON0 [label="0", fillcolor=lightblue]; + INT_CON1 [label="1", fillcolor=lightblue]; + INT_BOOL [label="[0...1]", fillcolor=lightblue,shape=oval]; + INT_LO [label="[min INT_TOP; + INT_TOP -> INT_HI; + INT_HI -> INT_XBOOL; + INT_XBOOL -> INT_CON0; + INT_XBOOL -> INT_CON1; + INT_HI -> INT_CON; + INT_CON0 -> INT_BOOL; + INT_CON1 -> INT_BOOL; + INT_BOOL -> INT_LO; + INT_CON -> INT_LO; + INT_LO -> INT_BOT; + INT_BOT -> BOT; + + INT_CON0 -> INT_CON1 -> INT_CON [style=invis]; + + // ---------------------- + // Floats + FLT_TOP [label=<⊤:flt>, fillcolor=aqua, shape=oval]; + FLT_BOT [label=<⊥:flt>, fillcolor=aqua, shape=oval]; + + FLT_CON64 [label="64b consts\n[excludes\n32b consts]" , fillcolor=aqua, shape=oval]; + FLT_CON32 [label="32b consts", fillcolor=aqua, shape=oval]; + FLT_CONPI [label="3.14159...", fillcolor=aqua, shape=oval]; + FLT_X32 [label="~f32", fillcolor=aqua]; + FLT_CON0 [label="0." , fillcolor=aqua]; + FLT_32 [label="f32" , fillcolor=aqua]; + + TOP -> FLT_TOP; + FLT_TOP -> FLT_CON64 + FLT_TOP -> FLT_CONPI + FLT_CON64 -> FLT_BOT + FLT_CONPI -> FLT_BOT + + FLT_TOP -> FLT_X32; + FLT_X32 -> FLT_CON0; + FLT_X32 -> FLT_CON32; + FLT_CON0 -> FLT_32; + FLT_CON32 -> FLT_32; + FLT_32 -> FLT_BOT + + FLT_BOT -> BOT; + + FLT_CON0 -> FLT_CON32 -> FLT_CONPI -> FLT_CON64 [style=invis]; + + + // ---------------------- + // Pointers, just a boolean nil/not and a struct + PTR [shape=none, fillcolor=none, label=< + + + +
*ptr
struct
+ >]; + PTR0 [shape=none, fillcolor=none, label=< + + + +
*ptr?
struct
+ >]; + + TOP -> PTR; + PTR -> PTR0; + PTR0 -> BOT; + + // ---------------------- + // Structs + STRUCT_TOP [label=<⊤:struct>, fillcolor=lightgreen, shape=oval]; + STRUCT_BOT [label=<⊥:struct>, fillcolor=lightgreen, shape=oval]; + + STRUCT_S1 [shape=none, fillcolor=none, label=< + + +
fieldint/ptr
+ >]; + STRUCT_S2 [shape=none, fillcolor=none, label=< + + + +
fieldint/ptr
fieldint/ptr
+ >]; + STRUCT_SN [shape=none, fillcolor=none, label=< + + + + +
fieldint/ptr
... int/ptr
fieldint/ptr
+ >]; + + + TOP -> STRUCT_TOP; + STRUCT_TOP -> STRUCT_S1; + STRUCT_TOP -> STRUCT_S2; + STRUCT_TOP -> STRUCT_SN; + STRUCT_S1 -> STRUCT_BOT; + STRUCT_S2 -> STRUCT_BOT; + STRUCT_SN -> STRUCT_BOT; + STRUCT_BOT -> BOT; + + STRUCT_S1 -> STRUCT_S2 -> STRUCT_SN [style=invis]; + + // ---------------------- + // Memory + MEM_TOP [label=<⊤:mem>, fillcolor=blue, fontcolor=white, shape=oval]; + MEM_BOT [label=<⊥:mem>, fillcolor=blue, fontcolor=white, shape=oval]; + MEM_ALIAS1 [label="#1" , fillcolor=blue, fontcolor=white]; + MEM_ALIASDOTS [label="..." , fillcolor=blue, fontcolor=white, shape=oval]; + MEM_ALIASN [label="#n" , fillcolor=blue, fontcolor=white]; + + TOP -> MEM_TOP; + MEM_TOP -> MEM_ALIAS1; + MEM_TOP -> MEM_ALIASDOTS; + MEM_TOP -> MEM_ALIASN; + MEM_ALIAS1 -> MEM_BOT; + MEM_ALIASDOTS -> MEM_BOT; + MEM_ALIASN -> MEM_BOT; + MEM_BOT -> BOT; + + MEM_ALIAS1 -> MEM_ALIASDOTS -> MEM_ALIASN [style=invis]; + + // ---------------------- + // Tuples + + TUPLE_TOP [label=<⊤:tuple>, fillcolor=pink, shape=oval]; + TUPLE_BOT [label=<⊥:tuple>, fillcolor=pink, shape=oval]; + + TUPLE1 [shape=none, fillcolor=none, label=< + + + +
Tuple
type
+ >]; + TUPLE2 [shape=none, fillcolor=none, label=< + + + + +
Tuple
type
type
+ >]; + TUPLEN [shape=none, fillcolor=none, label=< + + + + + +
Tuple
type
...
type
+ >]; + + + TOP -> TUPLE_TOP; + TUPLE_TOP -> TUPLE1; + TUPLE_TOP -> TUPLE2; + TUPLE_TOP -> TUPLEN; + TUPLE1 -> TUPLE_BOT; + TUPLE2 -> TUPLE_BOT; + TUPLEN -> TUPLE_BOT; + TUPLE_BOT -> BOT; + + // ---------------------- + // Additional customization + {rank=same; TOP;} + {rank=same; INT_TOP; FLT_TOP; XCTRL; PTR; STRUCT_TOP; MEM_TOP; TUPLE_TOP} + {rank=same; INT_CON; INT_CON0; INT_CON1; + FLT_CON32; FLT_CON64; FLT_CON0; FLT_CONPI; + STRUCT_S1; STRUCT_S2; STRUCT_SN; + MEM_ALIAS1; MEM_ALIASDOTS; MEM_ALIASN; + TUPLE1; TUPLE2; TUPLEN; + } + {rank=same; INT_BOT; FLT_BOT; CTRL; PTR0; STRUCT_BOT; MEM_BOT; TUPLE_BOT} + {rank=same; BOT;} +} diff --git a/chapter-interprocedural-sccp/docs/lattice.svg b/chapter-interprocedural-sccp/docs/lattice.svg new file mode 100644 index 00000000..e72b473b --- /dev/null +++ b/chapter-interprocedural-sccp/docs/lattice.svg @@ -0,0 +1,691 @@ + + + + + + +Lattice + + + +TOP + +⊤ + + + +XCTRL + +⊤ +:ctrl + + + +TOP->XCTRL + + + + + +INT_TOP + +⊤ +:int + + + +TOP->INT_TOP + + + + + +FLT_TOP + +⊤ +:flt + + + +TOP->FLT_TOP + + + + + +PTR + + + +*ptr + + +struct + + + +TOP->PTR + + + + + +STRUCT_TOP + +⊤ +:struct + + + +TOP->STRUCT_TOP + + + + + +MEM_TOP + +⊤ +:mem + + + +TOP->MEM_TOP + + + + + +TUPLE_TOP + +⊤ +:tuple + + + +TOP->TUPLE_TOP + + + + + +BOT + +⊥ + + + +CTRL + +⊥ +:ctrl + + + +XCTRL->CTRL + + + + + +CTRL->BOT + + + + + +INT_HI + +[min>max] + + + +INT_TOP->INT_HI + + + + + +INT_BOT + +⊥ +:int + + + +INT_BOT->BOT + + + + + +INT_XBOOL + +[1...0] + + + +INT_HI->INT_XBOOL + + + + + +INT_CON + +constants + + + +INT_HI->INT_CON + + + + + +INT_CON0 + +0 + + + +INT_XBOOL->INT_CON0 + + + + + +INT_CON1 + +1 + + + +INT_XBOOL->INT_CON1 + + + + + +INT_LO + +[min<max] + + + +INT_CON->INT_LO + + + + + + +INT_BOOL + +[0...1] + + + +INT_CON0->INT_BOOL + + + + + + +INT_CON1->INT_BOOL + + + + + +INT_BOOL->INT_LO + + + + + +INT_LO->INT_BOT + + + + + +FLT_CON64 + +64b consts +[excludes +32b consts] + + + +FLT_TOP->FLT_CON64 + + + + + +FLT_CONPI + +3.14159... + + + +FLT_TOP->FLT_CONPI + + + + + +FLT_X32 + +~f32 + + + +FLT_TOP->FLT_X32 + + + + + +FLT_BOT + +⊥ +:flt + + + +FLT_BOT->BOT + + + + + +FLT_CON64->FLT_BOT + + + + + +FLT_CON32 + +32b consts + + + + +FLT_32 + +f32 + + + +FLT_CON32->FLT_32 + + + + + +FLT_CONPI->FLT_BOT + + + + + + +FLT_X32->FLT_CON32 + + + + + +FLT_CON0 + +0. + + + +FLT_X32->FLT_CON0 + + + + + + +FLT_CON0->FLT_32 + + + + + +FLT_32->FLT_BOT + + + + + +PTR0 + + + +*ptr? + + +struct + + + +PTR->PTR0 + + + + + +PTR0->BOT + + + + + +STRUCT_S1 + + + +field + + + + + + + + +int/ptr + + + +STRUCT_TOP->STRUCT_S1 + + + + + +STRUCT_S2 + + + +field + + + + + + + + +int/ptr + + +field + + + + + + + + +int/ptr + + + +STRUCT_TOP->STRUCT_S2 + + + + + +STRUCT_SN + + + +field + + + + + + + + +int/ptr + + +...   + + + + + + + + +int/ptr + + +field + + + + + + + + +int/ptr + + + +STRUCT_TOP->STRUCT_SN + + + + + +STRUCT_BOT + +⊥ +:struct + + + +STRUCT_BOT->BOT + + + + + +STRUCT_S1->STRUCT_BOT + + + + + + +STRUCT_S2->STRUCT_BOT + + + + + + +STRUCT_SN->STRUCT_BOT + + + + + +MEM_ALIAS1 + +#1 + + + +MEM_TOP->MEM_ALIAS1 + + + + + +MEM_ALIASDOTS + +... + + + +MEM_TOP->MEM_ALIASDOTS + + + + + +MEM_ALIASN + +#n + + + +MEM_TOP->MEM_ALIASN + + + + + +MEM_BOT + +⊥ +:mem + + + +MEM_BOT->BOT + + + + + +MEM_ALIAS1->MEM_BOT + + + + + + +MEM_ALIASDOTS->MEM_BOT + + + + + + +MEM_ALIASN->MEM_BOT + + + + + +TUPLE1 + + + +Tuple + + +type + + + +TUPLE_TOP->TUPLE1 + + + + + +TUPLE2 + + + +Tuple + + +type + + +type + + + +TUPLE_TOP->TUPLE2 + + + + + +TUPLEN + + + +Tuple + + +type + + +... + + +type + + + +TUPLE_TOP->TUPLEN + + + + + +TUPLE_BOT + +⊥ +:tuple + + + +TUPLE_BOT->BOT + + + + + +TUPLE1->TUPLE_BOT + + + + + +TUPLE2->TUPLE_BOT + + + + + +TUPLEN->TUPLE_BOT + + + + + diff --git a/chapter-interprocedural-sccp/docs/lattice2.gv b/chapter-interprocedural-sccp/docs/lattice2.gv new file mode 100644 index 00000000..6aa37fa0 --- /dev/null +++ b/chapter-interprocedural-sccp/docs/lattice2.gv @@ -0,0 +1,85 @@ +digraph Lattice { + compound = true; + // Define nodes + splines=false; + node [shape=oval, style=filled]; + nodesep=0.2; + ranksep=0.4; + + TOP [label="~scalar\n+int+tmp+0", fillcolor=black, fontcolor=white, group=center]; + + // ------------------------ + PTRHQ [label="~tmp\n+tmp+0", fillcolor=green, fontcolor=white, group=left]; + TOP -> PTRHQ + + VALH_ [label="~nscalar\n+int+tmp", fillcolor=white, group=center]; + TOP -> VALH_ + + INTHQ [label="~int\n+int+0", fillcolor=lightblue, group=right]; + TOP -> INTHQ + + LEFTHI [label="junk", style=invis, group=junkleft] + + + PTRHQ -> LEFTHI-> VALH_ -> INTHQ [style=invis]; + { rank=same; PTRHQ; LEFTHI; VALH_; INTHQ } + + // ------------------------ + PTRH_ [label="~ntmp\n+tmp", fillcolor=green, fontcolor=white, group=left]; + VALH_ -> PTRH_ + PTRHQ -> PTRH_ + + INTH_ [label="~nint\n+int", fillcolor=lightblue, group=right]; + VALH_ -> INTH_ + INTHQ -> INTH_ + { rank=same; PTRH_; INTH_ } + + // ------------------------ + NILX_ [label="~nil\n[int,tmp]+0", fillcolor=aqua, group=junkleft]; + INTHQ -> NILX_ + PTRHQ -> NILX_ + + NIL__ [label="nil\n[+int+tmp],0", fillcolor=pink]; + VALH_ -> NIL__; + + NILX_ -> NIL__ [style=invis]; + { rank=same; NIL__; NILX_ } + + // ------------------------ + PTRL_ [label="ntmp\ntmp", fillcolor=green, fontcolor=white, group=left]; + PTRH_ -> PTRL_ + + INTL_ [label="nint\nint", fillcolor=lightblue, group=right]; + INTH_ -> INTL_ + { rank=same; PTRL_; INTL_ } + + // ------------------------ + PTRL0 [label="tmp\ntmp,0", fillcolor=green, fontcolor=white, group=left]; + PTRL_ -> PTRL0 + NIL__ -> PTRL0 + + VALL_ [label="nscalar\nint,tmp", fillcolor=white, group=center]; + PTRL_ -> VALL_ + INTL_ -> VALL_ + NILX_ -> VALL_ + + INTL0 [label="int\nint,0", fillcolor=lightblue, group=right]; + INTL_ -> INTL0 + NIL__ -> INTL0 + + PTRL0 -> VALL_ -> INTL0 [style=invis]; + { rank=same; PTRL0; VALL_; INTL0 } + + // ------------------------ + BOT [label="scalar\nint,tmp,0", fillcolor=black, fontcolor=white, group=center]; + PTRL0 -> BOT + INTL0 -> BOT + VALL_ -> BOT + + // ------------------------ + // Verticle alignment + TOP -> VALH_ -> VALL_ -> BOT [style=invis]; + PTRHQ -> PTRH_ -> PTRL_ -> PTRL0 [style=invis]; + INTHQ -> INTH_ -> INTL_ -> INTL0 [style=invis]; + LEFTHI -> NILX_ [style=invis] +} diff --git a/chapter-interprocedural-sccp/docs/lattice2.svg b/chapter-interprocedural-sccp/docs/lattice2.svg new file mode 100644 index 00000000..8b682aa7 --- /dev/null +++ b/chapter-interprocedural-sccp/docs/lattice2.svg @@ -0,0 +1,260 @@ + + + + + + +Lattice + + + +TOP + +~scalar ++int+tmp+0 + + + +PTRHQ + +~tmp ++tmp+0 + + + +TOP->PTRHQ + + + + + +VALH_ + +~nscalar ++int+tmp + + + +TOP->VALH_ + + + + + + +INTHQ + +~int ++int+0 + + + +TOP->INTHQ + + + + + + + +PTRH_ + +~ntmp ++tmp + + + +PTRHQ->PTRH_ + + + + + + +NILX_ + +~nil +[int,tmp]+0 + + + +PTRHQ->NILX_ + + + + + + +VALH_->PTRH_ + + + + + +INTH_ + +~nint ++int + + + +VALH_->INTH_ + + + + + +NIL__ + +nil +[+int+tmp],0 + + + +VALH_->NIL__ + + + + + +VALL_ + +nscalar +int,tmp + + + + +INTHQ->INTH_ + + + + + + +INTHQ->NILX_ + + + + + + + +PTRL_ + +ntmp +tmp + + + +PTRH_->PTRL_ + + + + + + +INTL_ + +nint +int + + + +INTH_->INTL_ + + + + + + + +NILX_->VALL_ + + + + + +PTRL0 + +tmp +tmp,0 + + + +NIL__->PTRL0 + + + + + +INTL0 + +int +int,0 + + + +NIL__->INTL0 + + + + + +PTRL_->PTRL0 + + + + + + +PTRL_->VALL_ + + + + + +INTL_->VALL_ + + + + + +INTL_->INTL0 + + + + + + + +BOT + +scalar +int,tmp,0 + + + +PTRL0->BOT + + + + + + +VALL_->BOT + + + + + + +INTL0->BOT + + + + + diff --git a/chapter-interprocedural-sccp/docs/pardoe.docx b/chapter-interprocedural-sccp/docs/pardoe.docx new file mode 100644 index 00000000..24fde921 Binary files /dev/null and b/chapter-interprocedural-sccp/docs/pardoe.docx differ diff --git a/chapter-interprocedural-sccp/docs/webtcp.min.js b/chapter-interprocedural-sccp/docs/webtcp.min.js new file mode 100644 index 00000000..bf23ee5a --- /dev/null +++ b/chapter-interprocedural-sccp/docs/webtcp.min.js @@ -0,0 +1,65 @@ +function Http(j){this.cID=Math.random().toString(36).substr(2);this.webtcp=j;this.webtcp.httpClients[this.cID]=this;this.createPacket=function(){return{cID:this.cID,type:"http",host:this.remoteAddress,port:this.remotePort,method:null,data:null}};this.ondata=function(){};this.get=function(g,c){this.on("data",c);this.rpc("httpGet",[g])};this.post=function(g,c,j){this.on("data",j);this.rpc("httpPost",[g,c])}}Http.prototype=new WebTCPIO;function Socket(j,g,c,p){this.sID=Math.random().toString(36).substr(2);this.webtcp=j;this.closed=this.ready=!1;this.options=p;this.sockOpts={_updating:!1};this.remoteAddress=g;this.remotePort=c;this.webtcp.sockets[this.sID]=this;this.createPacket=function(){return{id:Math.random().toString(36).substr(2),sID:this.sID,type:"tcp",options:this.options,host:this.remoteAddress,port:this.remotePort,data:null}};this.onconnect=function(){this.webtcp.sockets[sID].ready=!0;this.webtcp.sockets[sID].closed=!1}; 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