3 Commits

Author	SHA1	Message	Date
Jakob Stoklund Olesen	96ecdfd8dd	Avoid rematerializing a redef immediately after the old def. ... PR14098 contains an example where we would rematerialize a MOV8ri immediately after the original instruction: %vreg7:sub_8bit<def> = MOV8ri 9; GR32_ABCD:%vreg7 %vreg22:sub_8bit<def> = MOV8ri 9; GR32_ABCD:%vreg7 Besides being pointless, it is also wrong since the original instruction only redefines part of the register, and the value read by the new instruction is wrong. The problem was the LiveRangeEdit::allUsesAvailableAt() didn't special-case OrigIdx == UseIdx and found the wrong SSA value. llvm-svn: 166068	2012-10-16 22:51:58 +00:00
Jakob Stoklund Olesen	1cfbe5c549	Revert r166046 "Switch back to the old coalescer for now to fix the 32 bit bit" ... A fix for PR14098, including the test case is in the next commit. llvm-svn: 166067	2012-10-16 22:51:55 +00:00
Rafael Espindola	2f08719190	Switch back to the old coalescer for now to fix the 32 bit bit ... llvm+clang+compiler-rt bootstrap. llvm-svn: 166046	2012-10-16 19:34:06 +00:00