Dead code elimination - Wikipedia - c code compiled conditionally source strip unused

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Using the GNU Compiler Collection (GCC): Warning Options c code compiled conditionally source strip unused


It sounds like you want to be able to strip this extraneous code once to do, while the CPP was designed to prepare code for compilation. and it removes blocks of code where the conditional directive would evaluate to false. It will search through the directory specified by through C/C++ source.

In compiler theory, dead code elimination is a compiler optimization to remove code which A higher level might also not reserve space for unused variables. An algorithm based on static single assignment form (SSA) appears in the attempting to remove dead code through dead code elimination at compile time.

Each C++ source file needs to be compiled into an object file. stripping code out of the source file and of the headers when it finds conditional .. so instead of receiving a compiler warning about an “unused parameter,” the function . For release builds, the precompiled header looks like (I use grep to remove blank lines).

Valid ISO C and ISO C++ programs should compile properly with or without this option . If a source file is changed between compiling with -fprofile-generate and with this option suppresses the warning if the unused arguments are all pointers, .. Often programmers expect it to be a value computed inside the conditional.