[LLVMdev] [PATCH] increase the max number of physical registers
Jakob Stoklund Olesen
stoklund at 2pi.dk
Tue Dec 8 15:31:54 PST 2009
On Dec 8, 2009, at 11:33 AM, Evan Cheng wrote:
> This caused a massive slow down to post-ra scheduler (llc -O3 on x86, -O2 on ARM). I'm going to revert it for now until it has been addressed.
Probably caused by this member:
/// KillIndices - The index of the most recent kill (proceding bottom-up),
/// or ~0u if the register is not live.
std::fill(KillIndices, array_endof(KillIndices), ~0u);
It should probably be dynamically allocated with TRI->getNumRegs() members instead.
More information about the llvm-dev