Chandler Carruth 93228f6199 [vectorizer] Tweak the way we do small loop runtime unrolling in the ... loop vectorizer to not do so when runtime pointer checks are needed and share code with the new (not yet enabled) load/store saturation runtime unrolling. Also ensure that we only consider the runtime checks when the loop hasn't already been vectorized. If it has, the runtime check cost has already been paid. I've fleshed out a test case to cover the scalar unrolling as well as the vector unrolling and comment clearly why we are or aren't following the pattern. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200530 91177308-0d34-0410-b5e6-96231b3b80d8		2014-01-31 10:51:08 +00:00
..
ARM	ARM cost model: Unaligned vectorized double stores are expensive	2013-10-29 01:33:57 +00:00
X86	[vectorizer] Tweak the way we do small loop runtime unrolling in the	2014-01-31 10:51:08 +00:00
XCore	Name the XCore target-specific subdirectories canonically.	2013-09-18 14:08:30 +00:00
12-12-11-if-conv.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
2012-10-20-infloop.ll	Force a fixed unroll count on the target independent tests.	2013-01-05 00:58:48 +00:00
2012-10-22-isconsec.ll	TBAA: remove !tbaa from testing cases if not used.	2013-05-02 18:11:35 +00:00
align.ll	LoopVectorizer: Use abi alignment for accesses with no alignment	2013-11-15 23:09:33 +00:00
bsd_regex.ll	Fix missing CHECK-LABELs	2013-10-02 20:29:00 +00:00
bzip_reverse_loops.ll	TBAA: remove !tbaa from testing cases if not used.	2013-05-02 18:11:35 +00:00
calloc.ll	TBAA: remove !tbaa from testing cases if not used.	2013-04-30 17:52:57 +00:00
cast-induction.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
cpp-new-array.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
dbg.value.ll	Debug Info: update testing cases to specify the debug info version number.	2013-11-22 21:49:45 +00:00
debugloc.ll	Debug Info: update testing cases to specify the debug info version number.	2013-11-22 21:49:45 +00:00
ee-crash.ll	LoopVectorizer: Don't attempt to vectorize extractelement instructions	2013-10-25 20:40:15 +00:00
flags.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
float-reduction.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
funcall.ll	Fix missing CHECK-LABELs	2013-10-02 20:29:00 +00:00
gcc-examples.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
global_alias.ll	InstCombine: Teach most integer add/sub/mul/div combines how to deal with vectors.	2014-01-19 15:24:22 +00:00
hoist-loads.ll	Fix missing CHECK-LABELs	2013-10-02 20:29:00 +00:00
i8-induction.ll	TBAA: remove !tbaa from testing cases if not used.	2013-04-30 17:52:57 +00:00
if-conv-crash.ll	LoopVectorize: Handle single edge PHIs	2013-05-18 18:38:34 +00:00
if-conversion-edgemasks.ll	LoopVectorize: Cache edge masks created during if-conversion	2013-06-27 20:31:06 +00:00
if-conversion-nest.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
if-conversion-reduction.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
if-conversion.ll	LoopVectorizer: Don't if-convert constant expressions that can trap	2013-12-17 01:11:01 +00:00
if-pred-stores.ll	LoopVectorize: Support conditional stores by scalarizing	2014-01-28 01:01:53 +00:00
increment.ll	Correct word hyphenations	2013-12-05 05:44:44 +00:00
induction_plus.ll	LoopVectorizer: Perform redundancy elimination on induction variables	2013-11-01 22:18:19 +00:00
induction.ll	Fix broken CHECK lines.	2014-01-11 21:06:00 +00:00
infiniteloop.ll	Fix missing CHECK-LABELs	2013-10-02 20:29:00 +00:00
intrinsic.ll	Revert "LoopVectorizer: Only allow vectorization of intrinsics."	2013-09-23 14:54:39 +00:00
lcssa-crash.ll	LoopVectorize: LoopSimplify can't canonicalize loops with an indirectbr in it, don't assert on those cases.	2013-05-24 18:05:35 +00:00
lifetime.ll	Fix missing CHECK-LABELs	2013-10-02 20:29:00 +00:00
memdep.ll	Fix missing CHECK-LABELs	2013-10-02 20:29:00 +00:00
metadata-unroll.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
metadata-width.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
minmax_reduction.ll	Scalarize select vector arguments when extracted.	2013-11-04 20:36:06 +00:00
multi-use-reduction-bug.ll	LoopVectorizer: A reduction that has multiple uses of the reduction value is not	2014-01-19 03:18:31 +00:00
multiple-address-spaces.ll	TBAA: remove !tbaa from testing cases when they are not needed.	2013-09-30 18:17:35 +00:00
no_idiv_reduction.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
no_int_induction.ll	Teach LoopVectorize about address space sizes	2013-08-22 02:42:55 +00:00
no_outside_user.ll	Fix missing CHECK-LABELs	2013-10-02 20:29:00 +00:00
nofloat.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
non-const-n.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
nsw-crash.ll	LoopVectorizer: Fix a bug in the vectorization of BinaryOperators. The BinaryOperator can be folded to an Undef, and we don't want to set NSW flags to undef vals.	2013-01-10 17:34:39 +00:00
opt.ll	opt: Mirror vectorization presets of clang	2013-12-03 16:33:06 +00:00
phi-hang.ll	LoopVectorize: Use a set to avoid longer cycles in the reduction chain too.	2013-04-18 14:29:13 +00:00
ptr_loops.ll	Fix missing CHECK-LABELs	2013-10-02 20:29:00 +00:00
read-only.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
reduction.ll	LoopVectorize: External uses must use the last value in a reduction cycle	2013-10-07 21:05:43 +00:00
reverse_induction.ll	Fix missing CHECK-LABELs	2013-10-02 20:29:00 +00:00
reverse_iter.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
runtime-check-address-space.ll	Don't use runtime bounds check between address spaces.	2013-10-02 22:38:17 +00:00
runtime-check-readonly-address-space.ll	Don't use runtime bounds check between address spaces.	2013-10-02 22:38:17 +00:00
runtime-check-readonly.ll	LoopVectorizer: Handle strided memory accesses by versioning	2014-01-10 18:20:32 +00:00
runtime-check.ll	LoopVectorizer: If dependency checks fail try runtime checks	2013-11-01 03:05:07 +00:00
runtime-limit.ll	Fix missing CHECK-LABELs	2013-10-02 20:29:00 +00:00
safegep.ll	Fix missing CHECK-LABELs	2013-10-02 20:29:00 +00:00
same-base-access.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
scalar-select.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
scev-exitlim-crash.ll	Fix missing CHECK-LABELs	2013-10-02 20:29:00 +00:00
simple-unroll.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
small-loop.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
start-non-zero.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
store-shuffle-bug.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
struct_access.ll	LoopVectorize: Look for consecutive acces in GEPs with trailing zero indices	2013-11-01 14:09:50 +00:00
undef-inst-bug.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
unroll_novec.ll	[vectorizer] Add an override for the target instruction cost and use it	2014-01-27 11:41:50 +00:00
value-ptr-bug.ll	Fix known typos	2014-01-24 17:20:08 +00:00
vectorize-once.ll	Mark vector loops as already vectorized	2013-10-24 14:50:51 +00:00
version-mem-access.ll	LoopVectorize: Only strip casts from integer types when replacing symbolic	2014-01-15 03:35:46 +00:00
write-only.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00