Nikita Popov f65c88c42f [GlobalOpt] Fix memset handling in global ctor evaluation (PR55859) ... The global ctor evaluator currently handles by checking whether the memset memory is already zero, and skips it in that case. However, it only actually checks the first byte of the memory being set. This patch extends the code to check all bytes being set. This is done byte-by-byte to avoid converting undef values to zeros in larger reads. However, the handling is still not completely correct, because there might still be padding bytes (though probably this doesn't matter much in practice, as I'd expect global variable padding to be zero-initialized in practice). Mostly fixes https://github.com/llvm/llvm-project/issues/55859. Differential Revision: https://reviews.llvm.org/D128532		2022-06-27 16:50:49 +02:00
..
PowerPC	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2004-10-10-CastStoreOnce.ll	…
2005-06-15-LocalizeConstExprCrash.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2005-09-27-Crash.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2006-07-07-InlineAsmCrash.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2006-11-01-ShrinkGlobalPhiCrash.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2007-04-05-Crash.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2007-05-13-Crash.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2007-06-04-PackedStruct.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2007-11-09-GEP-GEP-Crash.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2008-01-03-Crash.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2008-01-13-OutOfRangeSROA.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2008-01-29-VolatileGlobal.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2008-04-26-SROA-Global-Align.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2008-07-17-addrspace.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2008-12-16-HeapSRACrash-2.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2008-12-16-HeapSRACrash.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2009-01-13-phi-user.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2009-02-15-BitcastAlias.ll	…
2009-02-15-ResolveAlias.ll	[GlobalOpt] Don't replace alias with aliasee if either alias/aliasee may be preemptible	2022-03-18 14:17:05 -07:00
2009-03-05-dbg.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2009-03-06-Anonymous.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2009-03-07-PromotePtrToBool.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2009-06-01-RecursivePHI.ll	[GlobalOpt][test] Remove br i1 undef	2022-06-10 20:36:22 -07:00
2009-11-16-BrokenPerformHeapAllocSRoA.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2009-11-16-MallocSingleStoreToGlobalVar.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2010-02-25-MallocPromote.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2010-02-26-MallocSROA.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2010-10-19-WeakOdr.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2011-04-09-EmptyGlobalCtors.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2012-05-11-blockaddress.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2021-08-02-CastStoreOnceP2I.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
2021-08-03-StoreOnceLoadMultiCasts.ll	[GlobalOpt] Use generic type when converting malloc to global	2022-01-17 09:55:33 +01:00
GSROA-section.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
MallocSROA-section-no-null-opt.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
MallocSROA-section.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
SROA-section.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
address_space_initializer.ll	[GlobalOpt] Simplify CleanupConstantGlobalUsers()	2021-12-01 21:06:25 +01:00
alias-resolve.ll	[GlobalOpt] Don't replace alias with aliasee if either alias/aliasee may be preemptible	2022-03-18 14:17:05 -07:00
alias-used-address-space.ll	[GlobalOpt] Don't replace alias with aliasee if either alias/aliasee may be preemptible	2022-03-18 14:17:05 -07:00
alias-used-section.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
alias-used.ll	[GlobalOpt] Don't replace alias with aliasee if either alias/aliasee may be preemptible	2022-03-18 14:17:05 -07:00
amdgcn-ctor-alloca.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
analysis-invalidation.ll	Reland [GlobalOpt] Preserve CFG analyses	2022-06-21 09:19:59 -07:00
array-elem-refs.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
assume.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
atexit.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
atomic.ll	[GlobalOpt] Simplify CleanupConstantGlobalUsers()	2021-12-01 21:06:25 +01:00
available_externally_global_ctors.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
basictest.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
blockaddress.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
calloc-promote.ll	[GlobalOpt] Generalize malloc-to-global for any allocation function	2022-01-17 15:06:23 -08:00
cleanup-pointer-root-users.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
coldcc_stress_test.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
compiler-used.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
const-return-status-atomic.ll	[GlobalOpt] Simplify CleanupConstantGlobalUsers()	2021-12-01 21:06:25 +01:00
const-return-status.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
constant-can-trap.ll	[GlobalOpt] don't hoist constant expressions that can trap	2021-08-27 08:10:20 -04:00
constantexpr-dangle.ll	…
constantfold-initializers.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
crash-2.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
crash.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
ctor-list-opt-constexpr.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
ctor-list-opt-inbounds.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
ctor-list-opt.ll	[GlobalOpt] Enable optimization of constructors with different priorities	2022-05-13 22:19:29 +00:00
ctor-memset.ll	[GlobalOpt] Fix memset handling in global ctor evaluation (PR55859)	2022-06-27 16:50:49 +02:00
cxx-dtor.ll	…
dead-constant-user.ll	[GlobalStatus] Skip non-pointer dead constant users	2022-02-01 15:51:32 +01:00
dead-store-status.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
deaddeclaration.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
deadfunction.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
deadglobal-2.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
deadglobal-diarglist-use.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
deadglobal.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
evaluate-bitcast-2.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
evaluate-bitcast-3.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
evaluate-bitcast-4.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
evaluate-bitcast.ll	…
evaluate-call-errors.ll	…
evaluate-call.ll	…
evaluate-constfold-call.ll	…
evaluate-load-uniform.ll	[ConstantFold] Check uniform value in ConstantFoldLoadFromConst()	2022-01-13 14:40:19 +01:00
externally-initialized-aggregate.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
externally-initialized-global-ctr.ll	[GlobalOpt] Make global SRA offset based	2022-01-17 09:28:36 +01:00
externally-initialized.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
fastcc.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
global-constructor-opaque-ptr.ll	[OpaquePtr][GlobalOpt] Don't attempt to evaluate global constructors with arguments	2022-04-27 19:00:44 -07:00
global-demotion.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
globalsra-align.ll	[GlobalOpt] Make global SRA offset based	2022-01-17 09:28:36 +01:00
globalsra-generic-type.ll	[GlobalOpt] Make global SRA offset based	2022-01-17 09:28:36 +01:00
globalsra-multigep.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
globalsra-opaque-ptr.ll	[GlobalOpt] Make global SRA offset based	2022-01-17 09:28:36 +01:00
globalsra-partial.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
globalsra-recursive.ll	[GlobalOpt] Make global SRA offset based	2022-01-17 09:28:36 +01:00
globalsra-unknown-index.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
globalsra.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
heap-sra-1-no-null-opt.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
heap-sra-1.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
heap-sra-2-no-null-opt.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
heap-sra-2.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
heap-sra-phi-no-null-opt.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
heap-sra-phi.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
int_sideeffect.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
integer-bool-dwarf.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
integer-bool.ll	…
invariant-nodatalayout.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
invariant.group.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
invariant.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
invoke.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
iterate.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
large-element-size.ll	[IR] Handle large element size when calculating GEP indices	2021-09-24 22:20:20 +02:00
large-int-crash.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
load-store-global-no-null-opt.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
load-store-global.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
localize-constexpr-debuginfo.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
localize-constexpr.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
long-compilation-global-sra.ll	[opt] Directly translate -O# to -passes='default<O#>'	2021-10-18 16:48:10 -07:00
malloc-promote-1-no-null-opt.ll	Revert "[GlobalOpt] Perform store->dominated load forwarding for stored once globals"	2022-06-20 10:26:47 -07:00
malloc-promote-1.ll	[test][GlobalOpt] Regenerate some tests	2022-06-18 21:34:38 -07:00
malloc-promote-2-no-null-opt.ll	Revert "[GlobalOpt] Perform store->dominated load forwarding for stored once globals"	2022-06-20 10:26:47 -07:00
malloc-promote-2.ll	[test][GlobalOpt] Regenerate some tests	2022-06-18 21:34:38 -07:00
malloc-promote-3.ll	Revert "[GlobalOpt] Perform store->dominated load forwarding for stored once globals"	2022-06-20 10:26:47 -07:00
malloc-promote-4.ll	[test][GlobalOpt] Regenerate some tests	2022-06-18 21:34:38 -07:00
malloc-promote-5.ll	[test][GlobalOpt] Regenerate some tests	2022-06-18 21:34:38 -07:00
malloc-promote-6.ll	[GlobalOpt] Iterate over replaced values deterministically to constprop	2022-05-02 09:43:20 -07:00
malloc-promote-opaque-ptr.ll	[GlobalOpt] Use generic type when converting malloc to global	2022-01-17 09:55:33 +01:00
memcpy.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
memset-null.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
memset.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
metadata.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
musttail_cc.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
naked_functions.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
new-promote.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
null-check-global-value.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
null-check-is-use-pr35760.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
null-check-not-use-pr35760.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
phi-select.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
pr21191.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
pr33686.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
pr39751.ll	[GlobalOpt] Add test for PR39751 (NFC)	2021-12-02 09:17:33 +01:00
pr51879.ll	[GlobalOpt][Evaluator] Rewrite global ctor evaluation (fixes PR51879)	2022-01-04 09:30:54 +01:00
pr52994.ll	[GlobalOpt][Evaluator] Don't create bitcast for same type (PR52994)	2022-01-05 09:17:07 +01:00
pr53002.ll	[GlobalOpt][Evaluator] Fix off by one error in bounds check (PR53002)	2022-01-05 14:06:02 +01:00
pr54572.ll	[GlobalOpt] Handle non-instruction MTI source (PR54572)	2022-03-28 14:28:47 +02:00
preallocated.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
preserve-comdats.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
recursively-delete-dead-inst-assertion.ll	[GlobalOpt] Fix assertion failure during instruction deletion	2021-12-02 11:58:39 +01:00
shrink-address-to-bool.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
shrink-global-to-bool-check-debug.ll	[GlobalOpt] Perform store->dominated load forwarding for stored once globals	2022-06-24 09:09:26 -07:00
shrink-global-to-bool-opaque-ptrs.ll	[GlobalOpt] Fix global to select transform under opaque pointers	2022-01-13 11:13:06 +01:00
shrink-global-to-bool.ll	[GlobalOpt] Perform store->dominated load forwarding for stored once globals	2022-06-24 09:09:26 -07:00
static-const-bitcast.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
store-struct-element.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
stored-once-different-type.ll	[GlobalOpt] Support "stored once" optimization for different types	2022-01-12 09:39:31 +01:00
stored-once-forward-value.ll	[GlobalOpt] Perform store->dominated load forwarding for stored once globals	2022-06-24 09:09:26 -07:00
stored-once-through-gep.ll	[GlobalStatus] Look through non-constexpr casts	2022-01-11 16:02:35 +01:00
stored-once-value-type.ll	[GlobalOpt] Support "stored once" optimization for different types	2022-01-12 09:39:31 +01:00
storepointer-compare-no-null-opt.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
storepointer-compare.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
storepointer-no-null-opt.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
storepointer.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
tls.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
trivialstore.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
undef-ctor-dtor.ll	[GlobalOpt] Handle undef global_ctors gracefully	2022-03-10 16:02:12 +01:00
undef-init.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
unnamed-addr.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00
x86_mmx_load.ll	[ConstantFold][GlobalOpt] Don't create x86_mmx null value	2021-12-21 09:11:41 +01:00
zeroinitializer-gep-load.ll	[test] Use -passes syntax when specifying pipeline in some more tests	2021-11-27 09:52:55 +01:00