OSchip
/
llvm-project
mirror of https://github.com/THU-DSP-LAB/llvm-project.git
13
0
Fork 6
Code Issues Packages Projects Releases Wiki Activity
llvm-project/llvm/test/Transforms/DeadStoreElimination
History
Matteo Favaro 989051d5f8 [DSE] Extending isOverwrite to support offsetted fully overlapping stores 
The isOverwrite function is making sure to identify if two stores
are fully overlapping and ideally we would like to identify all the
instances of OW_Complete as they'll yield possibly killable stores.
The current implementation is incapable of spotting instances where
the earlier store is offsetted compared to the later store, but
still fully overlapped. The limitation seems to lie on the
computation of the base pointers with the
GetPointerBaseWithConstantOffset API that often yields different
base pointers even if the stores are guaranteed to partially overlap
(e.g. the alias analysis is returning AliasResult::PartialAlias).

The patch relies on the offsets computed and cached by BatchAAResults
(available after D93529) to determine if the offsetted overlapping
is OW_Complete.

Differential Revision: https://reviews.llvm.org/D97676
 		2021-03-10 21:09:33 +01:00
..
X86 [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
2011-03-25-DSEMiscompile.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
2011-09-06-EndOfFunction.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
2011-09-06-MemCpy.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
2016-07-17-UseAfterFree.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
OverwriteStoreBegin.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
OverwriteStoreEnd.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
PartialStore.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
PartialStore2.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
atomic-overlapping.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
atomic-todo.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
atomic.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
calloc-store.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
combined-partial-overwrites.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
const-pointers.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
crash.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
cs-cs-aliasing.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
debug-counter.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
debuginfo.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
dominate.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
fence-todo.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
fence.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
free.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
inst-limits.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
int_sideeffect.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
invariant.start.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
launder.invariant.group.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
libcalls.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
lifetime.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
loop-invariant-entry-block.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
masked-dead-store-inseltpoison.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
masked-dead-store.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
mda-with-dbg-values.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
memcpy-complete-overwrite.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
memcpy-lifetimes.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
memintrinsics.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
memory-intrinsics-sizes.ll [DSE] Handle memmove with equal non-const sizes 2021-03-10 17:52:00 +01:00
memoryssa-scan-limit.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
memset-and-memcpy.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
memset-missing-debugloc.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
memset-unknown-sizes.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
merge-stores-big-endian.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
merge-stores.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
multiblock-captures.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
multiblock-exceptions.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
multiblock-loop-carried-dependence.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
multiblock-loops.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
multiblock-malloc-free.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
multiblock-memintrinsics.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
multiblock-memoryphis.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
multiblock-multipath-throwing.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
multiblock-multipath.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
multiblock-overlap.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
multiblock-partial.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
multiblock-simple.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
multiblock-throwing.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
multiblock-unreachable.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
no-targetdata.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
noop-stores.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
offsetted-overlapping-stores.ll [DSE] Extending isOverwrite to support offsetted fully overlapping stores 2021-03-10 21:09:33 +01:00
operand-bundles.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
out-of-bounds-stores.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
overlap.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
phi-translation.ll [DSE] Add tests that require phi translation to be removed. 2021-03-10 16:32:55 +00:00
pr11390.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
pr47285-not-overwritten-on-all-exit-paths.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
read-clobber-after-overwrite.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
scoped-noalias.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
simple-preservation.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
simple.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
stats.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
stores-of-existing-values.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00
tail-byval.ll [DSE] Remove MemDep-based implementation 2021-03-07 18:17:31 +01:00