6.6 Brief description of Clang analysis tools

As mentioned earlier, the CFG is foundational for other analysis tools in Clang, several of which have been created atop the CFG. These tools also employ advanced mathematics to analyze various cases. The most notable tools are as follows [32]:

• LivenessAnalysis: Determines whether a computed value will be used before being overwritten, producing liveness sets for each statement and CFGBlock

• UninitializedVariables: Identifies the use of uninitialized variables through multiple passes, including initial categorization of statements and subsequent calculation of variable usages

• Thread Safety Analysis: Analyzes annotated functions and variables to ensure thread safety

LivenessAnalysis in Clang is essential for optimizing code by determining whether a value computed at one point will be used before being overwritten. It produces liveness sets for each statement and CFGBlock, indicating potential future use of variables or expressions. This backward...