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Roman Lebedev bb7d3af113
Reland [SimplifyCFG][LoopRotate] SimplifyCFG: disable common instruction hoisting by default, enable late in pipeline 
This was reverted in 503deec218
because it caused gigantic increase (3x) in branch mispredictions
in certain benchmarks on certain CPU's,
see https://reviews.llvm.org/D84108#2227365.

It has since been investigated and here are the results:
https://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20200907/827578.html
> It's an amazingly severe regression, but it's also all due to branch
> mispredicts (about 3x without this). The code layout looks ok so there's
> probably something else to deal with. I'm not sure there's anything we can
> reasonably do so we'll just have to take the hit for now and wait for
> another code reorganization to make the branch predictor a bit more happy :)
>
> Thanks for giving us some time to investigate and feel free to recommit
> whenever you'd like.
>
> -eric

So let's just reland this.
Original commit message:


I've been looking at missed vectorizations in one codebase.
One particular thing that stands out is that some of the loops
reach vectorizer in a rather mangled form, with weird PHI's,
and some of the loops aren't even in a rotated form.

After taking a more detailed look, that happened because
the loop's headers were too big by then. It is evident that
SimplifyCFG's common code hoisting transform is at fault there,
because the pattern it handles is precisely the unrotated
loop basic block structure.

Surprizingly, `SimplifyCFGOpt::HoistThenElseCodeToIf()` is enabled
by default, and is always run, unlike it's friend, common code sinking
transform, `SinkCommonCodeFromPredecessors()`, which is not enabled
by default and is only run once very late in the pipeline.

I'm proposing to harmonize this, and disable common code hoisting
until //late// in pipeline. Definition of //late// may vary,
here currently i've picked the same one as for code sinking,
but i suppose we could enable it as soon as right after
loop rotation happens.

Experimentation shows that this does indeed unsurprizingly help,
more loops got rotated, although other issues remain elsewhere.

Now, this undoubtedly seriously shakes phase ordering.
This will undoubtedly be a mixed bag in terms of both compile- and
run- time performance, codesize. Since we no longer aggressively
hoist+deduplicate common code, we don't pay the price of said hoisting
(which wasn't big). That may allow more loops to be rotated,
so we pay that price. That, in turn, that may enable all the transforms
that require canonical (rotated) loop form, including but not limited to
vectorization, so we pay that too. And in general, no deduplication means
more [duplicate] instructions going through the optimizations. But there's still
late hoisting, some of them will be caught late.

As per benchmarks i've run {F12360204}, this is mostly within the noise,
there are some small improvements, some small regressions.
One big regression i saw i fixed in rG8d487668d09fb0e4e54f36207f07c1480ffabbfd, but i'm sure
this will expose many more pre-existing missed optimizations, as usual :S

llvm-compile-time-tracker.com thoughts on this:
http://llvm-compile-time-tracker.com/compare.php?from=e40315d2b4ed1e38962a8f33ff151693ed4ada63&to=c8289c0ecbf235da9fb0e3bc052e3c0d6bff5cf9&stat=instructions
* this does regress compile-time by +0.5% geomean (unsurprizingly)
* size impact varies; for ThinLTO it's actually an improvement

The largest fallout appears to be in GVN's load partial redundancy
elimination, it spends *much* more time in
`MemoryDependenceResults::getNonLocalPointerDependency()`.
Non-local `MemoryDependenceResults` is widely-known to be, uh, costly.
There does not appear to be a proper solution to this issue,
other than silencing the compile-time performance regression
by tuning cut-off thresholds in `MemoryDependenceResults`,
at the cost of potentially regressing run-time performance.
D84609 attempts to move in that direction, but the path is unclear
and is going to take some time.

If we look at stats before/after diffs, some excerpts:
* RawSpeed (the target) {F12360200}
  * -14 (-73.68%) loops not rotated due to the header size (yay)
  * -272 (-0.67%) `"Number of live out of a loop variables"` - good for vectorizer
  * -3937 (-64.19%) common instructions hoisted
  * +561 (+0.06%) x86 asm instructions
  * -2 basic blocks
  * +2418 (+0.11%) IR instructions
* vanilla test-suite + RawSpeed + darktable  {F12360201}
  * -36396 (-65.29%) common instructions hoisted
  * +1676 (+0.02%) x86 asm instructions
  * +662 (+0.06%) basic blocks
  * +4395 (+0.04%) IR instructions

It is likely to be sub-optimal for when optimizing for code size,
so one might want to change tune pipeline by enabling sinking/hoisting
when optimizing for size.

Reviewed By: mkazantsev

Differential Revision: https://reviews.llvm.org/D84108

This reverts commit 503deec218.
 		2020-09-08 00:24:03 +03:00
..
AArch64 [NFCI][SimplifyCFG] Guard common code hoisting with a (default-on) flag 2020-07-20 10:29:57 +03:00
AMDGPU Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
ARM [SimplifyCFG] Consider cost of combining predicates. 2020-09-07 10:04:50 +01:00
Hexagon [llvm] Fix missing FileCheck directive colons 2020-04-06 09:59:08 -06:00
Mips Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
PowerPC [PowerPC] add store (load float*) pattern to isProfitableToHoist 2020-07-21 20:55:13 -04:00
RISCV Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
SPARC [lit] Delete empty lines at the end of lit.local.cfg NFC 2019-06-17 09:51:07 +00:00
X86 [NFCI][SimplifyCFG] Guard common code hoisting with a (default-on) flag 2020-07-20 10:29:57 +03:00
1elt-ptr-vec-alignment-crash.ll [Analysis] isDereferenceableAndAlignedPointer(): don't crash on `bitcast <1 x ???*> to ???*` 2020-06-27 18:30:59 +03:00
2002-05-21-PHIElimination.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2002-09-24-PHIAssertion.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2003-03-07-DominateProblem.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2003-08-05-InvokeCrash.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2003-08-17-BranchFold.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2003-08-17-BranchFoldOrdering.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2003-08-17-FoldSwitch-dbg.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2003-08-17-FoldSwitch.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2004-12-10-SimplifyCFGCrash.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2005-06-16-PHICrash.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2005-08-01-PHIUpdateFail.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2005-10-02-InvokeSimplify.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2005-12-03-IncorrectPHIFold.ll [ConstProp] Remove ConstantPropagation 2020-08-26 15:51:30 -07:00
2006-02-17-InfiniteUnroll.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2006-06-12-InfLoop.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2006-08-03-Crash.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2006-10-19-UncondDiv.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2006-12-08-Ptr-ICmp-Branch.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2007-11-22-InvokeNoUnwind.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2007-12-21-Crash.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2008-01-02-hoist-fp-add.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2008-05-16-PHIBlockMerge.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2008-07-13-InfLoopMiscompile.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2008-09-08-MultiplePred.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2008-09-17-SpeculativeHoist.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2008-10-03-SpeculativelyExecuteBeforePHI.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2008-12-06-SingleEntryPhi.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2008-12-16-DCECond.ll [NFCI][SimplifyCFG] Guard common code hoisting with a (default-on) flag 2020-07-20 10:29:57 +03:00
2009-01-18-PHIPropCrash.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2009-05-12-externweak.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2011-03-08-UnreachableUse.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
2011-09-05-TrivialLPad.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
BrUnwind.ll [NFCI][SimplifyCFG] Guard common code hoisting with a (default-on) flag 2020-07-20 10:29:57 +03:00
ConditionalTrappingConstantExpr.ll [SimplifyCFG] regenerate test checks; NFC 2020-03-13 14:12:28 -04:00
DeadSetCC.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
EmptyBlockMerge.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
EqualPHIEdgeBlockMerge.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
ForwardSwitchConditionToPHI.ll [SimplifyCFG] Regenerate test checks (NFC) 2020-06-28 20:51:02 +02:00
HoistCode.ll [NFCI][SimplifyCFG] Guard common code hoisting with a (default-on) flag 2020-07-20 10:29:57 +03:00
InfLoop.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
PHINode.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
PR9946.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
PR16069.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
PR17073.ll [SimplifyCFG] regenerate complete test checks; NFC 2020-03-13 14:12:28 -04:00
PR25267.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
PR27615-simplify-cond-br.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
PhiBlockMerge.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
PhiBlockMerge2.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
PhiEliminate.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
PhiEliminate2.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
PhiEliminate3.ll [SimplifyCFG] FoldTwoEntryPHINode(): consider *total* speculation cost, not per-BB cost 2019-09-16 16:18:24 +00:00
PhiNoEliminate.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
UncondBranchToHeader.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
UncondBranchToReturn.ll [NFCI][SimplifyCFG] Guard common code hoisting with a (default-on) flag 2020-07-20 10:29:57 +03:00
UnreachableEliminate.ll [IR] Convert null-pointer-is-valid into an enum attribute 2020-05-15 19:41:07 +02:00
assume.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
attr-convergent.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
attr-noduplicate.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
basictest.ll [SimplifyCFG] Update debug location when folding branch to common destination 2020-06-18 12:33:32 -07:00
bbi-23595.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
branch-cond-merge.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
branch-cond-prop.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
branch-fold-dbg.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
branch-fold-test.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
branch-fold-three.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
branch-fold-threshold.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
branch-fold.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
branch-phi-thread.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
callbr-destinations.ll [SimplifyCFG] Skip merging return blocks if it would break a CallBr. 2020-03-10 14:59:13 +01:00
clamp.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
common-code-hoisting.ll Reland [SimplifyCFG][LoopRotate] SimplifyCFG: disable common instruction hoisting by default, enable late in pipeline 2020-09-08 00:24:03 +03:00
common-dest-folding.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
constantexprs.ll [CostModel] Avoid traditional ConstantExpr crashy pitfails 2020-06-26 22:48:10 +03:00
convergent.ll [SimplifyCFG] Do not create unneeded PR Phi in block with convergent calls 2020-07-22 13:53:50 +07:00
dbginfo.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
dce-cond-after-folding-terminator.ll [Local] Zap blockaddress without users in ConstantFoldTerminator. 2019-07-20 12:25:47 +00:00
debug-info-thread-phi.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
div-rem-pairs.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
drop-debug-loc-when-speculating.ll [SimplifyCFG] Drop debug loc in SpeculativelyExecuteBB 2020-06-23 18:25:52 -07:00
duplicate-landingpad.ll [SimplifyCFG] Regenerate test checks (NFC) 2020-06-28 20:51:02 +02:00
duplicate-phis.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
empty-catchpad.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
extract-cost.ll [SimplifyCFG] add test for chain of empty block conditional branches; NFC 2020-03-13 14:39:31 -04:00
fold-debug-info.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
fold-debug-location.ll [SimplifyCFG] Update debug location when folding branch to common destination 2020-06-18 12:33:32 -07:00
gepcost.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
guards.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
hoist-common-code.ll [NFCI][SimplifyCFG] Guard common code hoisting with a (default-on) flag 2020-07-20 10:29:57 +03:00
hoist-dbgvalue-inlined.ll [NFCI][SimplifyCFG] Guard common code hoisting with a (default-on) flag 2020-07-20 10:29:57 +03:00
hoist-dbgvalue.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
hoist-with-range.ll [NFCI][SimplifyCFG] Guard common code hoisting with a (default-on) flag 2020-07-20 10:29:57 +03:00
implied-and-or.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
implied-cond-matching-false-dest.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
implied-cond-matching-imm.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
implied-cond-matching.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
implied-cond.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
indirectbr.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
inline-asm-sink.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
invoke.ll [IR] Convert null-pointer-is-valid into an enum attribute 2020-05-15 19:41:07 +02:00
invoke_unwind.ll [IR] Convert profile metadata in createCallMatchingInvoke() 2020-06-20 12:10:31 +07:00
invoke_unwind_lifetime.ll [SimplifyCFG] Fix invoke->call fold w/ multiple invokes in presence of lifetime intrinsics 2020-08-08 20:00:28 +03:00
iterative-simplify.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
lifetime-landingpad.ll Fix lifetime call in landingpad blocking Simplifycfg pass 2020-04-09 13:07:32 -07:00
lifetime.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
merge-cond-stores-2.ll [SimplifyCFG][NFC] Regenerate merge-cond-stores* tests 2019-09-07 09:25:18 +00:00
merge-cond-stores.ll [InstCombine] Always try to invert non-canonical predicate of an icmp 2020-07-04 18:12:04 +03:00
merge-default.ll Fix return status of SimplifyCFG 2020-09-05 07:54:15 +02:00
multiple-phis.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
no-md-sink.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
no_speculative_loads_with_asan.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
no_speculative_loads_with_tsan.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
nomerge.ll Add nomerge function attribute to supress tail merge optimization in simplifyCFG 2020-05-12 16:49:20 -07:00
noreturn-call.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
opt-for-fuzzing.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
phi-undef-loadstore.ll [IR] Convert null-pointer-is-valid into an enum attribute 2020-05-15 19:41:07 +02:00
pr33605.ll [llvm] Fix missing FileCheck directive colons 2020-04-06 09:59:08 -06:00
pr34131.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
pr35774.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
pr39807.ll [NFCI][SimplifyCFG] Guard common code hoisting with a (default-on) flag 2020-07-20 10:29:57 +03:00
pr46638.ll [InstSimplify] Handle not inserted instruction gracefully (PR46638) 2020-07-08 21:43:32 +02:00
preserve-branchweights-partial.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
preserve-branchweights-switch-create.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
preserve-branchweights.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
preserve-llvm-loop-metadata.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
preserve-load-metadata-2.ll [NFCI][SimplifyCFG] Guard common code hoisting with a (default-on) flag 2020-07-20 10:29:57 +03:00
preserve-load-metadata-3.ll [NFCI][SimplifyCFG] Guard common code hoisting with a (default-on) flag 2020-07-20 10:29:57 +03:00
preserve-load-metadata.ll [NFCI][SimplifyCFG] Guard common code hoisting with a (default-on) flag 2020-07-20 10:29:57 +03:00
preserve-make-implicit-on-switch-to-br.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
preserve-store-alignment.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
rangereduce.ll [SimplifyCFG] back out all SwitchInst commits 2019-05-26 18:15:51 +00:00
return-merge.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
safe-abs.ll [SimplifyCFG] FoldTwoEntryPHINode(): consider *total* speculation cost, not per-BB cost 2019-09-16 16:18:24 +00:00
seh-nounwind.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
select-gep.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
signbit-like-value-extension.ll [SimplifyCFG] FoldTwoEntryPHINode(): consider *total* speculation cost, not per-BB cost 2019-09-16 16:18:24 +00:00
sink-common-code.ll Allow replacing intrinsic operands with variables 2020-03-23 15:51:57 -04:00
speculate-call.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
speculate-dbgvalue.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
speculate-math.ll [SimplifyCFG] propagate fast-math-flags (FMF) from phi to select 2019-11-17 11:23:44 -05:00
speculate-store.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
speculate-vector-ops.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
speculate-with-offset.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
statepoint-invoke-unwind.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
suppress-zero-branch-weights.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
switch-dead-default.ll [SimplifyCFG] Make test more robust (NFC) 2020-06-28 20:51:03 +02:00
switch-masked-bits.ll [SimplifyCFG] NFC, update Switch tests as a baseline. 2019-06-13 19:36:38 +00:00
switch-on-const-select.ll [SimplifyCFG] NFC, update Switch tests as a baseline. 2019-06-13 19:36:38 +00:00
switch-profmd.ll [SimplifyCFG] Fix prof branch_weights MD while removing unreachable switch cases 2019-06-17 05:55:12 +00:00
switch-range-to-icmp.ll [SimplifyCFG] avoid crashing after simplifying a switch (PR42737) 2019-07-25 17:01:12 +00:00
switch-simplify-crash.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
switch-to-br.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
switch-to-icmp.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
switch-to-select-multiple-edge-per-block-phi.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
switch-to-select-two-case.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
switch_create-custom-dl.ll Reland [DataLayout] Fix occurrences that size and range of pointers are assumed to be the same. 2019-12-13 14:30:21 +00:00
switch_create.ll [SimplifyCFG] NFC, update Switch tests as a baseline. 2019-06-13 19:36:38 +00:00
switch_msan.ll [SimplifyCFG] Don't SimplifyBranchOnICmpChain with ExtraCase 2019-09-05 22:49:34 +00:00
switch_switch_fold.ll [SimplifyCFG] NFC, update Switch tests as a baseline. 2019-06-13 19:36:38 +00:00
switch_thread.ll [SimplifyCFG] NFC, update Switch tests as a baseline. 2019-06-13 19:36:38 +00:00
switch_undef.ll [SimplifyCFG] NFC, update Switch tests as a baseline. 2019-06-13 19:36:38 +00:00
trap-debugloc.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
trap-no-null-opt-debugloc.ll [IR] Convert null-pointer-is-valid into an enum attribute 2020-05-15 19:41:07 +02:00
trapping-load-unreachable.ll [IR] Convert null-pointer-is-valid into an enum attribute 2020-05-15 19:41:07 +02:00
two-entry-phi-fold-crash.ll [SimplifyCFG] Fix crash in the EXPENSIVE_CHECKS build 2020-07-16 15:34:41 -06:00
two-entry-phi-return.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
unprofitable-pr.ll [SimplifyCFG] Fix inconsistency in block size assessment for threading 2020-06-30 12:40:07 +07:00
unreachable-cleanuppad.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00
unreachable_assume.ll [SimplifyCFG] Added condition assumption for unreachable blocks 2019-05-25 22:34:27 +00:00
unsigned-multiplication-will-overflow.ll [SimplifyCFG] FoldTwoEntryPHINode(): don't bailout on i1 PHI's if we can hoist a 'not' from incoming values 2019-08-29 12:47:34 +00:00
volatile-phioper.ll Migrate function attribute "no-frame-pointer-elim"="false" to "frame-pointer"="none" as cleanups after D56351 2019-12-24 16:27:51 -08:00
wc-widen-block.ll [SimplifyCFG] Regenerate test checks (NFC) 2020-06-28 20:51:02 +02:00
wineh-unreachable.ll Revert "Temporarily Revert "Add basic loop fusion pass."" 2019-04-17 04:52:47 +00:00