Eliminate hard-coded constants and macros.Possible use cases:Compute hash of string at compile-time Compile-time obfuscation of strings with XOR Compile-time computation of numerical constants such as Pi, Euler’s number and so on. Look-up table for embedded systems Save embedded systems ROM (Re...
An alternative solution is that you might be able to eliminate the placement new altogether. If your code uses placement new to implement a memory pool where the placement argument is the size of the object being allocated or deleted, then sized deallocation feature might be suitable to replace...
In addition, other optimization passes in GCC use this flag to control global dataflow analyses that eliminate useless checks for null pointers; these assume that if a pointer is checked after it has already been dereferenced, it cannot be null. Note however that in some environments this ...
LINK_ELIMINATE_DUPLICATE_LDIRECTORIES MIPS_DEBUGGING_INFO \ IDENT_ASM_OP ALL_COP_ADDITIONAL_REGISTER_NAMES \ RANGE_TEST_NON_SHORT_CIRCUIT \ REAL_VALUE_TRUNCATE REVERSE_CONDEXEC_PREDICATES_P \ TARGET_ALIGN_ANON_BITFIELDS TARGET_NARROW_VOLATILE_BITFIELDS \ IDENT_ASM_OP UNALIGNED_SHORT_ASM_OP ...
The C++ compiler does eliminate some temporary objects, but it cannot eliminate all of them. Write functions to minimize the number of temporary objects as long as your programs remain comprehensible. Techniques include using explicit variables rather than implicit temporary objects and using reference ...
this small amount of overhead is a reasonable price to pay for fewer bugs. Constructors eliminate an entire class of C programming errors having to do with uninitialized data structures. This feature has also proved useful for hiding the awkward initialization sequences that are associated with co...
Fortunately, the__attribute__mechanism was cleverly designed in a way to make it easy to quietly eliminate them if used on platforms other than GNU C. Superficially,__attribute__appears to have multiple parameters (which would typically rule out using a macro), but thetwosets of parentheses ...
PLINK will also eliminate duplicately defined weak functions in Systems/C programs (mostly used for C++ templates.) PLINK will remove the bytes from the generated TXT sections, signifcantly reducing the resulting load-module size. Furthermore, PLINK (and DAR/DRANLIB) can now handle IBM C obje...
[=type] -gsplit-dwarf -gdescribe-dies -gno-describe-dies -fdebug-prefix-map=old=new -fdebug-types-section -fno-eliminate-unused-debug-types -femit-struct-debug-baseonly -femit-struct-debug-reduced -femit-struct-debug-detailed[=spec-list] -fno-eliminate-unused-debug-symbols -femit-class...