Change Details

This patch is part of supporting `-fstack-clash-protection`. Mainly do such things compared to existing `lowerDynamicAlloc` - Added a new pseudo instruction `PPC::PREPARE_PROBED_ALLOC` to get actual frame pointer and negsize. - Synthesize a loop to probe by blocks. - Use `DYNAREAOFFSET` to get MaxCallFrameSize which is calculated in `prologepilog`.

This patch is part of supporting `-fstack-clash-protection`. Mainly do such things compared to existing `lowerDynamicAlloc` - Added a new pseudo instruction `PPC::PREPARE_PROBED_ALLOC` to get actual frame pointer and final stack pointer. - Synthesize a loop to probe by blocks. - Use `DYNAREAOFFSET` to get MaxCallFrameSize which is calculated in `prologepilog`.

This patch is part of supporting `-fstack-clash-protection`. Mainly do such things compared to existing `lowerDynamicAlloc` - Added a new pseudo instruction `PPC::PREPARE_PROBED_ALLOC` to get actual frame pointer and negsizefinal stack pointer. - Synthesize a loop to probe by blocks. - Use `DYNAREAOFFSET` to get MaxCallFrameSize which is calculated in `prologepilog`.