Dan Gohman 43873d4f73 Use range metadata instead of introducing selects. ... When GlobalOpt has determined that a GlobalVariable only ever has two values, it would convert the GlobalVariable to a boolean, and introduce SelectInsts at every load, to choose between the two possible values. These SelectInsts introduce overhead and other unpleasantness. This patch makes GlobalOpt just add range metadata to loads from such GlobalVariables instead. This enables the same main optimization (as seen in test/Transforms/GlobalOpt/integer-bool.ll), without introducing selects. The main downside is that it doesn't get the memory savings of shrinking such GlobalVariables, but this is expected to be negligible. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204076 91177308-0d34-0410-b5e6-96231b3b80d8		2014-03-17 19:57:04 +00:00
..
2004-10-10-CastStoreOnce.ll
2005-06-15-LocalizeConstExprCrash.ll
2005-09-27-Crash.ll
2006-07-07-InlineAsmCrash.ll
2006-11-01-ShrinkGlobalPhiCrash.ll
2007-04-05-Crash.ll
2007-05-13-Crash.ll
2007-06-04-PackedStruct.ll
2007-11-09-GEP-GEP-Crash.ll
2008-01-03-Crash.ll
2008-01-13-OutOfRangeSROA.ll
2008-01-29-VolatileGlobal.ll
2008-04-26-SROA-Global-Align.ll
2008-07-17-addrspace.ll	Quote potential shell expansions found in tests	2013-10-28 23:37:45 +00:00
2008-12-16-HeapSRACrash-2.ll
2008-12-16-HeapSRACrash.ll
2009-01-13-phi-user.ll
2009-02-15-BitcastAlias.ll	Reject alias to undefined symbols in the verifier.	2014-03-12 20:15:49 +00:00
2009-02-15-ResolveAlias.ll	Fixup to r186268 and r186269: don't append -LABEL to CHECK-NOT. No functionality change.	2013-07-14 02:10:57 +00:00
2009-03-05-dbg.ll	Debug Info Testing: update context from empty string to null.	2013-09-08 03:11:54 +00:00
2009-03-06-Anonymous.ll
2009-03-07-PromotePtrToBool.ll	Revert r193251 : Use address-taken to disambiguate global variable and indirect memops.	2013-10-27 03:08:44 +00:00
2009-06-01-RecursivePHI.ll
2009-11-16-BrokenPerformHeapAllocSRoA.ll
2009-11-16-MallocSingleStoreToGlobalVar.ll	Revert r193251 : Use address-taken to disambiguate global variable and indirect memops.	2013-10-27 03:08:44 +00:00
2010-02-25-MallocPromote.ll
2010-02-26-MallocSROA.ll
2010-10-19-WeakOdr.ll
2011-04-09-EmptyGlobalCtors.ll
2012-05-11-blockaddress.ll	Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change.	2013-07-14 01:50:49 +00:00
alias-resolve.ll	Reject alias to undefined symbols in the verifier.	2014-03-12 20:15:49 +00:00
alias-used-address-space.ll	Fix addrspacecast with metadata globals	2014-01-02 19:53:49 +00:00
alias-used-section.ll	GlobalOpt: Aliases don't have sections, don't copy them when replacing	2014-02-13 02:18:36 +00:00
alias-used.ll	s/compiler_used/compiler.used/.	2013-07-19 18:44:51 +00:00
array-elem-refs.ll	Fix a use-after-free error in GlobalOpt CleanupConstantGlobalUsers	2013-12-12 20:45:24 +00:00
atexit.ll	GlobalOpt: fix an issue where CXAAtExitFn points to a deleted function.	2013-05-14 21:52:44 +00:00
atomic.ll	Revert r193251 : Use address-taken to disambiguate global variable and indirect memops.	2013-10-27 03:08:44 +00:00
basictest.ll
blockaddress.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
cleanup-pointer-root-users.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
compiler-used.ll	Don't crash when llvm.compiler.used becomes empty.	2013-07-20 23:33:15 +00:00
constantexpr-dangle.ll
constantfold-initializers.ll
crash-2.ll	Use a worklist to avoid a sneaky iterator invalidation.	2013-04-02 08:16:45 +00:00
crash.ll
ctor-list-opt-constexpr.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
ctor-list-opt-inbounds.ll
ctor-list-opt.ll
cxx-dtor.ll
deadfunction.ll
deadglobal-2.ll	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
deadglobal.ll	Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change.	2013-07-14 01:50:49 +00:00
externally-initialized-global-ctr.ll	Added missing newline to end of test case.	2013-02-05 19:39:44 +00:00
fastcc.ll	GlobalOpt: Apply fastcc to internal x86_thiscallcc functions	2014-02-26 19:57:30 +00:00
globalsra-partial.ll
globalsra-unknown-index.ll	Revert r193251 : Use address-taken to disambiguate global variable and indirect memops.	2013-10-27 03:08:44 +00:00
globalsra.ll
heap-sra-1.ll
heap-sra-2.ll
heap-sra-3.ll
heap-sra-4.ll
heap-sra-phi.ll
integer-bool.ll	Use range metadata instead of introducing selects.	2014-03-17 19:57:04 +00:00
invariant-nodatalayout.ll	Check that TD isn't NULL before dereferencing it down this path.	2013-07-25 02:55:14 +00:00
invariant.ll
invoke.ll
iterate.ll
load-store-global.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
malloc-promote-1.ll
malloc-promote-2.ll
malloc-promote-3.ll	Respect the 'nobuiltin' attribute when determining if a call is to a memory builtin.	2013-05-16 04:12:04 +00:00
memcpy.ll
memset-null.ll
memset.ll	Delete unread globals through addrspacecast	2014-01-02 20:01:43 +00:00
metadata.ll	Revert r191834 until we measure the effect of this benchmarks and maybe find a better way to fix it	2013-10-07 19:03:24 +00:00
phi-select.ll
storepointer-compare.ll
storepointer.ll
tls.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
trivialstore.ll
twostore-gv-range.ll	Use range metadata instead of introducing selects.	2014-03-17 19:57:04 +00:00
undef-init.ll
unnamed-addr.ll	Revert r193251 : Use address-taken to disambiguate global variable and indirect memops.	2013-10-27 03:08:44 +00:00
zeroinitializer-gep-load.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00