Merge pull request #63 from jumormt/master

sync with SVF

CMakeLists.txt

@@ -1,15 +1,22 @@
-cmake_minimum_required(VERSION 3.4.3)
+cmake_minimum_required(VERSION 3.23)
+
+project(SVF-example
+        VERSION 1.0
+        DESCRIPTION "An external project example using SVF as a library"
+        HOMEPAGE_URL "https://github.com/SVF-tools/SVF-example"
+        LANGUAGES C CXX
+)
 if (DEFINED LLVM_DIR)
         set(ENV{LLVM_DIR} "${LLVM_DIR}")
     endif()
     if (DEFINED ENV{LLVM_DIR})
         # We need to match the build environment for LLVM:
         # In particular, we need C++11 and the -fno-rtti flag
-        set(CMAKE_CXX_STANDARD 14)
+        set(CMAKE_CXX_STANDARD 17)
 	if(CMAKE_BUILD_TYPE MATCHES "Debug")
-		set(CMAKE_CXX_FLAGS "-fPIC -std=gnu++14 -O0 -fno-rtti -Wno-deprecated")
+		set(CMAKE_CXX_FLAGS "-fPIC -std=gnu++17 -O0 -fno-rtti -Wno-deprecated")
 	else()
-		set(CMAKE_CXX_FLAGS "-fPIC -std=gnu++14 -O3 -fno-rtti -Wno-deprecated")
+		set(CMAKE_CXX_FLAGS "-fPIC -std=gnu++17 -O3 -fno-rtti -Wno-deprecated")
 	endif()
 	set(CMAKE_C_FLAGS "-fPIC")
 

compile.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+if [ -n $1 ]; then
+    file=$(basename $1 .c)
+    clang -S -c -Xclang -disable-O0-optnone -fno-discard-value-names -emit-llvm $1 -o $file.ll
+    opt -S -p=mem2reg $file.ll -o $file.ll
+else
+echo "please give the .c file"
+fi

example.ll

@@ -1,47 +1,39 @@
-; ModuleID = 'swap.ll'
-source_filename = "swap.c"
-target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-target triple = "x86_64-apple-macosx10.15.0"
+; ModuleID = 'example.ll'
+source_filename = "example.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
 
-; Function Attrs: noinline nounwind optnone ssp uwtable
-define void @swap(i8** %p, i8** %q) #0 {
+; Function Attrs: noinline nounwind uwtable
+define dso_local void @swap(ptr noundef %p, ptr noundef %q) #0 {
 entry:
-  %p.addr = alloca i8**, align 8
-  %q.addr = alloca i8**, align 8
-  %t = alloca i8*, align 8
-  store i8** %p, i8*** %p.addr, align 8
-  store i8** %q, i8*** %q.addr, align 8
-  %0 = load i8**, i8*** %p.addr, align 8
-  %1 = load i8*, i8** %0, align 8
-  store i8* %1, i8** %t, align 8
-  %2 = load i8**, i8*** %q.addr, align 8
-  %3 = load i8*, i8** %2, align 8
-  %4 = load i8**, i8*** %p.addr, align 8
-  store i8* %3, i8** %4, align 8
-  %5 = load i8*, i8** %t, align 8
-  %6 = load i8**, i8*** %q.addr, align 8
-  store i8* %5, i8** %6, align 8
+  %0 = load ptr, ptr %p, align 8
+  %1 = load ptr, ptr %q, align 8
+  store ptr %1, ptr %p, align 8
+  store ptr %0, ptr %q, align 8
   ret void
 }
 
-; Function Attrs: noinline nounwind optnone ssp uwtable
-define i32 @main() #0 {
+; Function Attrs: noinline nounwind uwtable
+define dso_local i32 @main() #0 {
 entry:
   %a1 = alloca i8, align 1
   %b1 = alloca i8, align 1
-  %a = alloca i8*, align 8
-  %b = alloca i8*, align 8
-  store i8* %a1, i8** %a, align 8
-  store i8* %b1, i8** %b, align 8
-  call void @swap(i8** %a, i8** %b)
+  %a = alloca ptr, align 8
+  %b = alloca ptr, align 8
+  store ptr %a1, ptr %a, align 8
+  store ptr %b1, ptr %b, align 8
+  call void @swap(ptr noundef %a, ptr noundef %b)
   ret i32 0
 }
 
-attributes #0 = { noinline nounwind optnone ssp uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="penryn" "target-features"="+cx16,+cx8,+fxsr,+mmx,+sahf,+sse,+sse2,+sse3,+sse4.1,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #0 = { noinline nounwind uwtable "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
 
-!llvm.module.flags = !{!0, !1}
-!llvm.ident = !{!2}
+!llvm.module.flags = !{!0, !1, !2, !3, !4}
+!llvm.ident = !{!5}
 
 !0 = !{i32 1, !"wchar_size", i32 4}
-!1 = !{i32 7, !"PIC Level", i32 2}
-!2 = !{!"clang version 10.0.0 "}
+!1 = !{i32 8, !"PIC Level", i32 2}
+!2 = !{i32 7, !"PIE Level", i32 2}
+!3 = !{i32 7, !"uwtable", i32 2}
+!4 = !{i32 7, !"frame-pointer", i32 2}
+!5 = !{!"clang version 16.0.0"}

src/svf-ex.cpp

@@ -36,9 +36,6 @@ using namespace llvm;
 using namespace std;
 using namespace SVF;
 
-static llvm::cl::opt<std::string> InputFilename(cl::Positional,
-        llvm::cl::desc("<input bitcode>"), llvm::cl::init("-"));
-
 /*!
  * An example to query alias results of two LLVM values
  */
@@ -152,19 +149,17 @@ void traverseOnVFG(const SVFG* vfg, Value* val)
 int main(int argc, char ** argv)
 {
 
-    int arg_num = 0;
-    char **arg_value = new char*[argc];
     std::vector<std::string> moduleNameVec;
-    LLVMUtil::processArguments(argc, argv, arg_num, arg_value, moduleNameVec);
-    cl::ParseCommandLineOptions(arg_num, arg_value,
-                                "Whole Program Points-to Analysis\n");
-    
+    moduleNameVec = OptionBase::parseOptions(
+            argc, argv, "Whole Program Points-to Analysis", "[options] <input-bitcode...>"
+    );
+
     if (Options::WriteAnder() == "ir_annotator")
     {
-        LLVMModuleSet::getLLVMModuleSet()->preProcessBCs(moduleNameVec);
+        LLVMModuleSet::preProcessBCs(moduleNameVec);
     }
 
-    SVFModule* svfModule = LLVMModuleSet::getLLVMModuleSet()->buildSVFModule(moduleNameVec);
+    SVFModule* svfModule = LLVMModuleSet::buildSVFModule(moduleNameVec);
 
     /// Build Program Assignment Graph (SVFIR)
     SVFIRBuilder builder(svfModule);