[LLVMdev] ARM instructions clobbering frame pointer

[Jakob Stoklund Olesen]

On Jun 25, 2011, at 11:39 PM, Cameron Zwarich wrote:

> Someone hit a bug (not in bugs.llvm.org) caused by the non-Darwin call instructions not being marked as using the frame pointer. Is it safe to just add r11 / r7 as uses to the appropriate instructions like we do on Darwin? Does anyone care about the slight pessimization this would cause in the -fomit-frame-pointer case?

That sounds very odd, the frame pointer should be reserved so it shouldn't matter who clobbers it.

Are you calling a function that uses a frame pointer from a function that omits the frame pointer?

/jakob