9b709e36e6
[PowerPC] Don't spill the frame pointer twice When a function contains something, such as inline asm, which explicitly clobbers the register used as the frame pointer, don't spill it twice. If we need a frame pointer, it will be saved/restored in the prologue/epilogue code. Explicitly spilling it again will reuse the same spill slot used by the prologue/epilogue code, thus clobbering the saved value. The same applies to the base-pointer or PIC-base register. Partially fixes PR26856. Thanks to Ulrich for his analysis and the small inline-asm reproducer.