Michael Zolotukhin 4e7b10b07f Fix a trip-count overflow issue in LoopUnroll. ... Currently LoopUnroll generates a prologue loop before the main loop body to execute first N%UnrollFactor iterations. Also, this loop is used if trip-count can overflow - it's determined by a runtime check. However, we've been mistakenly optimizing this loop to a linear code for UnrollFactor = 2, not taking into account that it also serves as a safe version of the loop if its trip-count overflows. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222451 91177308-0d34-0410-b5e6-96231b3b80d8		2014-11-20 20:19:55 +00:00
..
PowerPC	Use a loop to simplify the runtime unrolling prologue.	2014-09-29 11:15:00 +00:00
X86	Reduce verbiage of lit.local.cfg files	2014-06-09 22:42:55 +00:00
2004-05-13-DontUnrollTooMuch.ll
2005-03-06-BadLoopInfoUpdate.ll
2006-08-24-MultiBlockLoop.ll
2007-04-16-PhiUpdate.ll
2007-05-05-UnrollMiscomp.ll
2007-05-09-UnknownTripCount.ll
2007-11-05-Crash.ll
2011-08-08-PhiUpdate.ll
2011-08-09-IVSimplify.ll
2011-08-09-PhiUpdate.ll
2011-10-01-NoopTrunc.ll
2012-04-09-unroll-indirectbr.ll
basic.ll
ephemeral.ll	Add functions for finding ephemeral values	2014-09-07 13:49:57 +00:00
ignore-annotation-intrinsic-cost.ll	Ignore annotation function calls in cost computation	2014-09-26 17:48:40 +00:00
loop-remarks.ll	Fix vectorization remarks.	2014-04-29 20:06:10 +00:00
nsw-tripcount.ll	[SCEV] Improve Scalar Evolution's use of no {un,}signed wrap flags	2014-10-31 11:40:32 +00:00
partial-unroll-optsize.ll
pr10813.ll
pr11361.ll
pr14167.ll
pr18861.ll	LCSSA should be performed on the outermost affected loop while unrolling loop.	2014-05-29 06:47:23 +00:00
runtime-loop1.ll	Fix a trip-count overflow issue in LoopUnroll.	2014-11-20 20:19:55 +00:00
runtime-loop2.ll	Use a loop to simplify the runtime unrolling prologue.	2014-09-29 11:15:00 +00:00
runtime-loop3.ll
runtime-loop.ll	Use a loop to simplify the runtime unrolling prologue.	2014-09-29 11:15:00 +00:00
scevunroll.ll	This patch de-pessimizes the calculation of loop trip counts in	2014-10-10 17:39:11 +00:00
shifted-tripcount.ll
tripcount-overflow.ll	Fix a trip-count overflow issue in LoopUnroll.	2014-11-20 20:19:55 +00:00
unloop.ll
unroll-pragmas-disabled.ll	After unrolling a loop with llvm.loop.unroll.count metadata (unroll factor	2014-07-24 22:36:40 +00:00
unroll-pragmas.ll	In unroll pragma syntax and loop hint metadata, change "enable" forms to a new form using the string "full".	2014-07-23 17:31:37 +00:00
update-loop-info-in-subloops.ll	LoopUnroll: Create sub-loops in LoopInfo	2014-10-07 21:19:00 +00:00