ba0e4af50f
Almost all dead code is found in the first iteration. In LLVM lit tests, 461931 instructions were deleted in the first iteration and 2 in the second. In a 3-stage build of llvm, 1305507 instructions were deleted in the first iteration and 0 in the second. Added code to detect when another DCE iteration is needed. Number of DCE iterations will almost always be reduced from 2 to 1. --------- Signed-off-by: John Lu <John.Lu@amd.com>
4.2 KiB
4.2 KiB