<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Kartika;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
p.MsoListParagraph, li.MsoListParagraph, div.MsoListParagraph
{mso-style-priority:34;
margin-top:0in;
margin-right:0in;
margin-bottom:0in;
margin-left:.5in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
/* List Definitions */
@list l0
{mso-list-id:1737968969;
mso-list-type:hybrid;
mso-list-template-ids:1023690008 67698703 67698713 67698715 67698703 67698713 67698715 67698703 67698713 67698715;}
@list l0:level1
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level2
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level3
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
@list l0:level4
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level5
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level6
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
@list l0:level7
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level8
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level9
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
ol
{margin-bottom:0in;}
ul
{margin-bottom:0in;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="#0563C1" vlink="#954F72">
<div class="WordSection1">
<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I Have a question related to the RT check on pointers during Loop Access Analysis pass.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">There is a testcase with loop code that consist of 4 different memory operations referring two global objects of different address spaces.
<o:p></o:p></p>
<p class="MsoNormal">One from global constant (address space 4, addr_size = 64) and the other from local, LDS (address space 3, addr_size= 32).<o:p></o:p></p>
<p class="MsoNormal">(Details of various address spaces available for AMDGPU backend:
<a href="https://llvm.org/docs/AMDGPUUsage.html#address-spaces">https://llvm.org/docs/AMDGPUUsage.html#address-spaces</a>)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">With upstream compiler, the testcase fails with a crash (given at the end of the e-mail) in the opt while trying to generate the RT check for these pointers. Precisely, with two pointers of different address spaces.<o:p></o:p></p>
<p class="MsoNormal">The operand type check fails while trying to insert a ‘AddExpr’ SCEV node as their effective type differs for these pointers (One with 32-bit and the other with 64-bit)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>Question: Is this intended to try for the RtCheck on pointers from different address spaces?
<o:p></o:p></b></p>
<p class="MsoNormal"> The comments given in the code snippet (below) hints they aren’t.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Code snippet from LoopAccessAnalysis.cpp:<o:p></o:p></p>
<p class="MsoNormal">-----------------------------------------------------------------------------------------------------------------------<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> bool AccessAnalysis::canCheckPtrAtRT(...) {<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> ----------<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> // If the pointers that we would use for the bounds comparison have different<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> // address spaces, assume the values aren't directly comparable, so we can't<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> // use them for the runtime check. We also have to assume they could<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> // overlap. In the future there should be metadata for whether address spaces<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> // are disjoint.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> unsigned NumPointers = RtCheck.Pointers.size();<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> for (unsigned i = 0; i < NumPointers; ++i) {<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> for (unsigned j = i + 1; j < NumPointers; ++j) {<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> // Only need to check pointers between two different dependency sets.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> if (RtCheck.Pointers[i].DependencySetId ==<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> RtCheck.Pointers[j].DependencySetId)<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> continue;<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> // Only need to check pointers in the same alias set.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> if (RtCheck.Pointers[i].AliasSetId != RtCheck.Pointers[j].AliasSetId)<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> continue;<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> Value *PtrI = RtCheck.Pointers[i].PointerValue;<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> Value *PtrJ = RtCheck.Pointers[j].PointerValue;<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> unsigned ASi = PtrI->getType()->getPointerAddressSpace();<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> unsigned ASj = PtrJ->getType()->getPointerAddressSpace();<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> if (ASi != ASj) {<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> LLVM_DEBUG(<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> dbgs() << "LAA: Runtime check would require comparison between"<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> " different address spaces\n");<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> return false;<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> }<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> }<o:p></o:p></p>
<p class="MsoNormal">----------------------------------------------------------------------------------------------------<o:p></o:p></p>
<p class="MsoNormal">More details about the objects, the pointers and the memory operations:<o:p></o:p></p>
<p class="MsoNormal">----------------------------------------------------------------------------------------------------<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">%struct_var1 = type { <2 x float> }<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">%struct_var2 = type { %struct_var1 }<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">%class_var1 = type { i32, i32, i32, %struct_var2*, i32, i32, i32}<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">%class_var2 = type { %class_var1, i8, i8*, i32 }<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">Objects:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">@Obj1 = external protected local_unnamed_addr addrspace(4) externally_initialized global %class_var2, align 8<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">@Obj2 = internal unnamed_addr addrspace(3) constant [4000 x float] undef, align 16<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">Pointers:<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>%struct_var1.cast = bitcast %struct_var1* %struct_var2.gep to i64* (write) // AS1<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>%struct_var2.cast = bitcast %struct_var2* %arrayidx74 to i64* (read-only) // AS1<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>%arrayidx1705 = getelementptr inbounds [4000 x float], [4000 x float] addrspace(3)* @Obj2, i32 0, i32 %add125 (read-only) // AS2<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="mso-list:Ignore">4.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>%arrayidx274 = getelementptr inbounds [4000 x float], [4000 x float] addrspace(3)* @Obj2, i32 0, i32 %arg1 (read-only) // AS2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">While the pointers 1 & 2 belong to one Alias Set (AS1), pointers 3 & 4 belong to a different set (AS2). It is because, the Global Alias Analysis found there is no alias between these two sets of pointers.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">The crash occurs with the pointers 1 & 4 which are from AS1 and AS2 respectively.
<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">The DependenceSetId will be reset to 1 before processing a new AS and the pointers in question, ended up having the same DependenceSetId (1), though they are from different AS.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal"> ----------------------------------------------------------------------------------------------------------------------------------------------------------<o:p></o:p></p>
<p class="MsoNormal"> The load/store (memory operations) using these pointers in the loop. (extracted only the relevant instructions):<o:p></o:p></p>
<p class="MsoNormal"> ----------------------------------------------------------------------------------------------------------------------------------------------------------<o:p></o:p></p>
<p class="MsoNormal"> define protected amdgpu_kernel void @test_func(i32 %arg1, i32 %arg2) {<o:p></o:p></p>
<p class="MsoNormal"> entry:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> <b>%arrayidx274 = getelementptr inbounds [4000 x float], [4000 x float] addrspace(3)* @Obj2, i32 0, i32 %arg1<o:p></o:p></b></p>
<p class="MsoNormal" style="margin-left:.5in"><b> </b>---------<b><o:p></o:p></b></p>
<p class="MsoNormal" style="margin-left:.5in"> br i1 %cmp1, label %header, label %for.end<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">header:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> % <b>struct_var2.ld</b> = load %struct_var2*, %struct_var2* addrspace(4)* getelementptr inbounds (%class_var2, %class_var2 addrspace(4)* @Obj1, i64 0, i32 0, i32 3), align 8<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> %struct_var2.gep = getelementptr inbounds %struct_var2, %struct_var2* %struct_var2.ld, i64 undef, i32 0<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><b> %struct_var1.cast = bitcast %struct_var1* %struct_var2.gep to i64*<o:p></o:p></b></p>
<p class="MsoNormal" style="margin-left:.5in"> br label %for.body<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">for.body:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> --------- <o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> %arrayidx74 = getelementptr inbounds %struct_var2, %struct_var2* %struct_var2.ld, i64 %idxprom73<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><b> %struct_var2.cast = bitcast %struct_var2* %arrayidx74 to i64*<o:p></o:p></b></p>
<p class="MsoNormal" style="margin-left:.5in"><b> </b>%for.body.ld = load i64, i64* %<b>struct_var2.cast</b>, align 8<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> ---------<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> br i1 %cmp2, label %if.then, label %if.end<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">if.then:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> %rem = srem i32 1, %arg2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> %add125 = add nuw nsw i32 %rem, 1<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><b> %arrayidx1705 = getelementptr inbounds [4000 x float], [4000 x float] addrspace(3)* @Obj2, i32 0, i32 %add125<o:p></o:p></b></p>
<p class="MsoNormal" style="margin-left:.5in"> %arrayidx1705.ld = load float, float addrspace(3)* %<b>arrayidx1705</b>, align 4<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> %arrayidx274.ld = load float, float addrspace(3)* %<b>arrayidx274</b>, align 4<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> ---------<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> br label %if.end<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">if.end:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> store i64 %for.body.ld, i64* %<b>struct_var1.cast</b>, align 8<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> ---------<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> br i1 %cmp3, label %for.body, label %for.end<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">for.end:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> br exit<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">exit:<o:p></o:p></p>
<p class="MsoNormal"> }<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">----------------------------------------------------------------------------------------------------------------------------------------------------------<o:p></o:p></p>
<p class="MsoNormal">The actual crash and the back-trace:<o:p></o:p></p>
<p class="MsoNormal">----------------------------------------------------------------------------------------------------------------------------------------------------------<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">opt: $SRC/llvm-project/llvm/lib/Analysis/ScalarEvolution.cpp:2165: const llvm::SCEV *llvm::ScalarEvolution::getAddExpr(SmallVectorImpl<const llvm::SCEV *> &, SCEV::NoWrapFlags, unsigned int): Assertion `getEffectiveSCEVType(Ops[i]->getType())
== ETy && "SCEVAddExpr operand types don't match!"' failed.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">Stack dump:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">0. Program arguments: $Tools/bin/opt -O3 test.ll -o out.ll<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">llvm::ScalarEvolution::getAddExpr(llvm::SmallVectorImpl<llvm::SCEV const*>&, llvm::SCEV::NoWrapFlags, unsigned int) $SRC/llvm-project/llvm/lib/Analysis/ScalarEvolution.cpp:2164:5<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">llvm::ScalarEvolution::getAddExpr(llvm::SCEV const*, llvm::SCEV const*, llvm::SCEV::NoWrapFlags, unsigned int) $SRC/llvm-project/llvm/include/llvm/Analysis/ScalarEvolution.h:526:3<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">llvm::ScalarEvolution::getMinusSCEV(llvm::SCEV const*, llvm::SCEV const*, llvm::SCEV::NoWrapFlags, unsigned int) $SRC/llvm-project/llvm/lib/Analysis/ScalarEvolution.cpp:3833:3<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">getMinFromExprs(llvm::SCEV const*, llvm::SCEV const*, llvm::ScalarEvolution*) $SRC/llvm-project/llvm/lib/Analysis/LoopAccessAnalysis.cpp:275:15<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">llvm::RuntimeCheckingPtrGroup::addPointer(unsigned int) $SRC/llvm-project/llvm/lib/Analysis/LoopAccessAnalysis.cpp:292:15<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">llvm::RuntimePointerChecking::groupChecks(llvm::EquivalenceClasses<llvm::PointerIntPair<llvm::Value*, 1u, bool, llvm::PointerLikeTypeTraits<llvm::Value*>, llvm::PointerIntPairInfo<llvm::Value*, 1u, llvm::PointerLikeTypeTraits<llvm::Value*>
> > >&, bool) $SRC/llvm-project/llvm/lib/Analysis/LoopAccessAnalysis.cpp:413:13<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">llvm::RuntimePointerChecking::generateChecks(llvm::EquivalenceClasses<llvm::PointerIntPair<llvm::Value*, 1u, bool, llvm::PointerLikeTypeTraits<llvm::Value*>, llvm::PointerIntPairInfo<llvm::Value*, 1u, llvm::PointerLikeTypeTraits<llvm::Value*>
> > >&, bool) $SRC/llvm-project/llvm/lib/Analysis/LoopAccessAnalysis.cpp:259:12<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">(anonymous namespace)::AccessAnalysis::canCheckPtrAtRT(llvm::RuntimePointerChecking&, llvm::ScalarEvolution*, llvm::Loop*, llvm::DenseMap<llvm::Value const*, llvm::Value*, llvm::DenseMapInfo<llvm::Value const*>,
llvm::detail::DenseMapPair<llvm::Value const*, llvm::Value*> > const&, bool) $SRC/llvm-project/llvm/lib/Analysis/LoopAccessAnalysis.cpp:830:3<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">llvm::LoopAccessInfo::analyzeLoop(llvm::AAResults*, llvm::LoopInfo*, llvm::TargetLibraryInfo const*, llvm::DominatorTree*) $SRC/llvm-project/llvm/lib/Analysis/LoopAccessAnalysis.cpp:2038:8<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">llvm::LoopAccessInfo::LoopAccessInfo(llvm::Loop*, llvm::ScalarEvolution*, llvm::TargetLibraryInfo const*, llvm::AAResults*, llvm::DominatorTree*, llvm::LoopInfo*) $SRC/llvm-project/llvm/lib/Analysis/LoopAccessAnalysis.cpp:2222:1<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">std::_MakeUniq<llvm::LoopAccessInfo>::__single_object std::make_unique<llvm::LoopAccessInfo, llvm::Loop*&, llvm::ScalarEvolution*&, llvm::TargetLibraryInfo const*&, llvm::AAResults*&, llvm::DominatorTree*&, llvm::LoopInfo*&>(llvm::Loop*&,
llvm::ScalarEvolution*&, llvm::TargetLibraryInfo const*&, llvm::AAResults*&, llvm::DominatorTree*&, llvm::LoopInfo*&) /usr/bin/../lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0/bits/unique_ptr.h:821:34<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">llvm::LoopAccessLegacyAnalysis::getInfo(llvm::Loop*) $SRC/llvm-project/llvm/lib/Analysis/LoopAccessAnalysis.cpp:2275:5<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">(anonymous namespace)::LoopLoadElimination::runOnFunction(llvm::Function&)::'lambda'(llvm::Loop&)::operator()(llvm::Loop&) const $SRC/llvm-project/llvm/lib/Transforms/Scalar/LoopLoadElimination.cpp:651:53<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">llvm::LoopAccessInfo const& llvm::function_ref<llvm::LoopAccessInfo const& (llvm::Loop&)>::callback_fn<(anonymous namespace)::LoopLoadElimination::runOnFunction(llvm::Function&)::'lambda'(llvm::Loop&)>(long, llvm::Loop&)
$SRC/llvm-project/llvm/include/llvm/ADT/STLExtras.h:185:5<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">llvm::function_ref<llvm::LoopAccessInfo const& (llvm::Loop&)>::operator()(llvm::Loop&) const $SRC/llvm-project/llvm/include/llvm/ADT/STLExtras.h:203:5<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">eliminateLoadsAcrossLoops(llvm::Function&, llvm::LoopInfo&, llvm::DominatorTree&, llvm::BlockFrequencyInfo*, llvm::ProfileSummaryInfo*, llvm::function_ref<llvm::LoopAccessInfo const& (llvm::Loop&)>) $SRC/llvm-project/llvm/lib/Transforms/Scalar/LoopLoadElimination.cpp:618:53<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">(anonymous namespace)::LoopLoadElimination::runOnFunction(llvm::Function&) $SRC/llvm-project/llvm/lib/Transforms/Scalar/LoopLoadElimination.cpp:649:5<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">llvm::FPPassManager::runOnFunction(llvm::Function&) $SRC/llvm-project/llvm/lib/IR/LegacyPassManager.cpp:1587:23<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">llvm::FPPassManager::runOnModule(llvm::Module&) $SRC/llvm-project/llvm/lib/IR/LegacyPassManager.cpp:1629:16<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">(anonymous namespace)::MPPassManager::runOnModule(llvm::Module&) $SRC/llvm-project/llvm/lib/IR/LegacyPassManager.cpp:1698:23<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">llvm::legacy::PassManagerImpl::run(llvm::Module&) $SRC/llvm-project/llvm/lib/IR/LegacyPassManager.cpp:614:16<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">llvm::legacy::PassManager::run(llvm::Module&) $SRC/llvm-project/llvm/lib/IR/LegacyPassManager.cpp:1824:3<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">main $SRC/llvm-project/llvm/tools/opt/opt.cpp:955:3<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">__libc_start_main /build/glibc-2ORdQG/glibc-2.27/csu/../csu/libc-start.c:344:0<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">_start ($Tools/bin/opt+0xc98b6a)<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">Aborted (core dumped)<o:p></o:p></p>
<p class="MsoNormal">-----------------------------------------------------------------------------------------------------------------------------------------------------------------<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">CD<o:p></o:p></p>
</div>
</body>
</html>