The iOS simulator can run your app in 32 and 64-bit modes. This allows you to work out a lot of 64-bit issues and make sure it is ready for both armv7 and arm64. To do this, it compiles your app for i386 and x86_64 and requires the libraries for both architectures.
i386 is just one the first model in the x86 familly of processors, and instructions sets. For more informations, you might want to take a look at : Intel 80386 x86 Quoting the second page : The term x86 refers to a family of instruction set architectures[1] based on the Intel 8086. The term is … Read more
I’ve used a greedy approach in a JVM allocator once, which worked pretty well. Basically start at the top of a basic block with all values stored on the stack. Then just scan the instructions forward, maintaining a list of registers which contain a value, and whether the value is dirty (needs to be written … Read more
If want compile the file as 32 bits, you can use: ld -m elf_i386 -s -o file file.o