Agree that the free GNU stuff is key to ARM's success today but the original armcc compilers came from ARM, though. The GNU toolchain came much later. There are

Agree that the free GNU stuff is key to ARM's success today but the original armcc compilers came from ARM, though. The GNU toolchain came much later. There are other non-GNU compilers for ARM that are very widely used. Remember that ARM was super popular long before phones.