Displaying 1 result from an estimated 1 matches for "to_qmm".
2018 Nov 20
2
A pattern for portable __builtin_add_overflow()
Hi LLVM, clang,
I'm trying to write a portable version of __builtin_add_overflow() it a way
that the compiler would
recognize the pattern and use the add_overflow intrinsic / the best
possible machine instruction.
Here are docs about these builtins:
https://clang.llvm.org/docs/LanguageExtensions.html#checked-arithmetic-builtins
.
With unsigned types this is easy:
int uaddo_native(unsigned