<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Sep 29, 2016, at 12:28 AM, Daniel Berlin <<a href="mailto:dannyb@google.com" class="">dannyb@google.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><br class=""><div class="gmail_extra"><br class=""><div class="gmail_quote">On Wed, Sep 28, 2016 at 11:01 PM, Mehdi Amini <span dir="ltr" class=""><<a href="mailto:mehdi.amini@apple.com" target="_blank" class="">mehdi.amini@apple.com</a>></span> wrote:<br class=""><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br class="">
<br class="">
After this commit, an LTO link of llvm-tblgen with debug info is trigger many more calls to strlen().<br class="">
It is not calling it 21928214 (~22M) times, versus 12585102 (12.5M) before. And the livedebugvalues pass gets >3x slower (it is still only 3% of the total link time though).<br class="">
<br class="">
Is it expected?<br class=""></blockquote><div class=""><br class=""></div><div class="">3x slower seems a bit much, but it is actually solving the dataflow problem correctly now, instead of just dropping info on the floor somewhat randomly in certain cases.</div><div class=""><br class=""></div><div class="">I expect this is all taken care of by the followup adrian had though, right?<br class=""></div></div></div></div></div></blockquote><div><br class=""></div><div><span style="font-family: monospace;" class="">Mehdi, could you try and re-run the benchmark with a revision after r</span><span style="font-family: monospace;" class="">282611? I'm hoping that this offsets the extra cost of </span><font face="monospace" class="">r282506.</font></div><div><span style="font-family: monospace;" class=""><br class=""></span></div><div><font face="monospace" class="">-- adrian</font></div><br class=""><blockquote type="cite" class=""><div class=""><div dir="ltr" class=""><div class="gmail_extra"><div class="gmail_quote"><div class=""> <br class=""></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br class="">
The object file produced is slightly larger (31052564 after vs 30953876 before), which is due to the expected “better” debug info I guess.<br class="">
<br class="">
—<br class="">
Mehdi<br class="">
<br class="">
> On Sep 27, 2016, at 9:46 AM, Keith Walker via llvm-commits <<a href="mailto:llvm-commits@lists.llvm.org" class="">llvm-commits@lists.llvm.org</a>> wrote:<br class="">
><br class="">
> Author: kwalker<br class="">
> Date: Tue Sep 27 11:46:07 2016<br class="">
> New Revision: 282506<br class="">
><br class="">
> URL: <a href="http://llvm.org/viewvc/llvm-project?rev=282506&view=rev" rel="noreferrer" target="_blank" class="">http://llvm.org/viewvc/llvm-<wbr class="">project?rev=282506&view=rev</a><br class="">
> Log:<br class="">
> Propagate DBG_VALUE entries when there are unvisited predecessors<br class="">
><br class="">
> Variables are sometimes missing their debug location information in<br class="">
> blocks in which the variables should be available. This would occur<br class="">
> when one or more predecessor blocks had not yet been visited by the<br class="">
> routine which propagated the information from predecessor blocks.<br class="">
><br class="">
> This is addressed by only considering predecessor blocks which have<br class="">
> already been visited.<br class="">
><br class="">
> The solution to this problem was suggested by Daniel Berlin on the<br class="">
> LLVM developer mailing list.<br class="">
><br class="">
> Differential Revision: <a href="https://reviews.llvm.org/D24927" rel="noreferrer" target="_blank" class="">https://reviews.llvm.org/<wbr class="">D24927</a><br class="">
><br class="">
> Added:<br class="">
> llvm/trunk/test/CodeGen/ARM/<wbr class="">dbg-range-extension.mir<br class="">
> Modified:<br class="">
> llvm/trunk/lib/CodeGen/<wbr class="">LiveDebugValues.cpp<br class="">
><br class="">
> Modified: llvm/trunk/lib/CodeGen/<wbr class="">LiveDebugValues.cpp<br class="">
> URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/LiveDebugValues.cpp?rev=282506&r1=282505&r2=282506&view=diff" rel="noreferrer" target="_blank" class="">http://llvm.org/viewvc/llvm-<wbr class="">project/llvm/trunk/lib/<wbr class="">CodeGen/LiveDebugValues.cpp?<wbr class="">rev=282506&r1=282505&r2=<wbr class="">282506&view=diff</a><br class="">
> ==============================<wbr class="">==============================<wbr class="">==================<br class="">
> --- llvm/trunk/lib/CodeGen/<wbr class="">LiveDebugValues.cpp (original)<br class="">
> +++ llvm/trunk/lib/CodeGen/<wbr class="">LiveDebugValues.cpp Tue Sep 27 11:46:07 2016<br class="">
> @@ -201,7 +201,8 @@ private:<br class="">
> VarLocInMBB &OutLocs, VarLocMap &VarLocIDs);<br class="">
><br class="">
> bool join(MachineBasicBlock &MBB, VarLocInMBB &OutLocs, VarLocInMBB &InLocs,<br class="">
> - const VarLocMap &VarLocIDs);<br class="">
> + const VarLocMap &VarLocIDs,<br class="">
> + SmallPtrSet<const MachineBasicBlock *, 16> &Visited);<br class="">
><br class="">
> bool ExtendRanges(MachineFunction &MF);<br class="">
><br class="">
> @@ -368,7 +369,8 @@ bool LiveDebugValues::transfer(<wbr class="">MachineIn<br class="">
> /// inserting a new DBG_VALUE instruction at the start of the @MBB - if the same<br class="">
> /// source variable in all the predecessors of @MBB reside in the same location.<br class="">
> bool LiveDebugValues::join(<wbr class="">MachineBasicBlock &MBB, VarLocInMBB &OutLocs,<br class="">
> - VarLocInMBB &InLocs, const VarLocMap &VarLocIDs) {<br class="">
> + VarLocInMBB &InLocs, const VarLocMap &VarLocIDs,<br class="">
> + SmallPtrSet<const MachineBasicBlock *, 16> &Visited) {<br class="">
> DEBUG(dbgs() << "join MBB: " << MBB.getName() << "\n");<br class="">
> bool Changed = false;<br class="">
><br class="">
> @@ -376,21 +378,32 @@ bool LiveDebugValues::join(<wbr class="">MachineBasicB<br class="">
><br class="">
> // For all predecessors of this MBB, find the set of VarLocs that<br class="">
> // can be joined.<br class="">
> + int NumVisited = 0;<br class="">
> for (auto p : MBB.predecessors()) {<br class="">
> + // Ignore unvisited predecessor blocks. As we are processing<br class="">
> + // the blocks in reverse post-order any unvisited block can<br class="">
> + // be considered to not remove any incoming values.<br class="">
> + if (!Visited.count(p))<br class="">
> + continue;<br class="">
> auto OL = OutLocs.find(p);<br class="">
> // Join is null in case of empty OutLocs from any of the pred.<br class="">
> if (OL == OutLocs.end())<br class="">
> return false;<br class="">
><br class="">
> - // Just copy over the Out locs to incoming locs for the first predecessor.<br class="">
> - if (p == *MBB.pred_begin()) {<br class="">
> + // Just copy over the Out locs to incoming locs for the first visited<br class="">
> + // predecessor, and for all other predecessors join the Out locs.<br class="">
> + if (!NumVisited)<br class="">
> InLocsT = OL->second;<br class="">
> - continue;<br class="">
> - }<br class="">
> - // Join with this predecessor.<br class="">
> - InLocsT &= OL->second;<br class="">
> + else<br class="">
> + InLocsT &= OL->second;<br class="">
> + NumVisited++;<br class="">
> }<br class="">
><br class="">
> + // As we are processing blocks in reverse post-order we<br class="">
> + // should have processed at least one predecessor, unless it<br class="">
> + // is the entry block which has no predecessor.<br class="">
> + assert((NumVisited || MBB.pred_empty()) &&<br class="">
> + "Should have processed at least one predecessor");<br class="">
> if (InLocsT.empty())<br class="">
> return false;<br class="">
><br class="">
> @@ -463,6 +476,7 @@ bool LiveDebugValues::ExtendRanges(<wbr class="">Machi<br class="">
> // To solve it, we perform join() and transfer() using the two worklist method<br class="">
> // until the ranges converge.<br class="">
> // Ranges have converged when both worklists are empty.<br class="">
> + SmallPtrSet<const MachineBasicBlock *, 16> Visited;<br class="">
> while (!Worklist.empty() || !Pending.empty()) {<br class="">
> // We track what is on the pending worklist to avoid inserting the same<br class="">
> // thing twice. We could avoid this with a custom priority queue, but this<br class="">
> @@ -472,8 +486,8 @@ bool LiveDebugValues::ExtendRanges(<wbr class="">Machi<br class="">
> while (!Worklist.empty()) {<br class="">
> MachineBasicBlock *MBB = OrderToBB[Worklist.top()];<br class="">
> Worklist.pop();<br class="">
> - MBBJoined = join(*MBB, OutLocs, InLocs, VarLocIDs);<br class="">
> -<br class="">
> + MBBJoined = join(*MBB, OutLocs, InLocs, VarLocIDs, Visited);<br class="">
> + Visited.insert(MBB);<br class="">
> if (MBBJoined) {<br class="">
> MBBJoined = false;<br class="">
> Changed = true;<br class="">
><br class="">
> Added: llvm/trunk/test/CodeGen/ARM/<wbr class="">dbg-range-extension.mir<br class="">
> URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/ARM/dbg-range-extension.mir?rev=282506&view=auto" rel="noreferrer" target="_blank" class="">http://llvm.org/viewvc/llvm-<wbr class="">project/llvm/trunk/test/<wbr class="">CodeGen/ARM/dbg-range-<wbr class="">extension.mir?rev=282506&view=<wbr class="">auto</a><br class="">
> ==============================<wbr class="">==============================<wbr class="">==================<br class="">
> --- llvm/trunk/test/CodeGen/ARM/<wbr class="">dbg-range-extension.mir (added)<br class="">
> +++ llvm/trunk/test/CodeGen/ARM/<wbr class="">dbg-range-extension.mir Tue Sep 27 11:46:07 2016<br class="">
> @@ -0,0 +1,282 @@<br class="">
> +# RUN: llc -mtriple=arm-eabi -run-pass=livedebugvalues %s -o - | FileCheck %s<br class="">
> +#<br class="">
> +# Check that the debug information for variables are propagated into the correct blocks.<br class="">
> +#<br class="">
> +# Generated from the C source:<br class="">
> +#<br class="">
> +# int func2(int, int);<br class="">
> +# void func(int a) {<br class="">
> +# int b = func2(10, 11);<br class="">
> +# if (a) {<br class="">
> +# int c = func2(12, 13);<br class="">
> +# for(int i = 1; i < a; i++) {<br class="">
> +# func2(i, i+b);<br class="">
> +# }<br class="">
> +# func2(b,c);<br class="">
> +# }<br class="">
> +# func2(b,a);<br class="">
> +# }<br class="">
> +<br class="">
> +# CHECK: [[VAR_A:![0-9]+]] = !DILocalVariable(name: "a",<br class="">
> +# CHECK: [[VAR_B:![0-9]+]] = !DILocalVariable(name: "b",<br class="">
> +# CHECK: [[VAR_C:![0-9]+]] = !DILocalVariable(name: "c",<br class="">
> +# CHECK: [[VAR_I:![0-9]+]] = !DILocalVariable(name: "i",<br class="">
> +<br class="">
> +# CHECK: bb.0.entry<br class="">
> +# CHECK: DBG_VALUE debug-use %r0, debug-use _, [[VAR_A]]<br class="">
> +# CHECK: DBG_VALUE debug-use [[REG_A:%r[0-9]+]], debug-use _, [[VAR_A]]<br class="">
> +# CHECK: DBG_VALUE debug-use [[REG_B:%r[0-9]+]], debug-use _, [[VAR_B]]<br class="">
> +<br class="">
> +# CHECK: bb.1.if.then<br class="">
> +# CHECK: DBG_VALUE debug-use [[REG_B]], debug-use _, [[VAR_B]]<br class="">
> +# CHECK: DBG_VALUE debug-use [[REG_A]], debug-use _, [[VAR_A]]<br class="">
> +# CHECK: DBG_VALUE debug-use [[REG_C:%r[0-9]+]], debug-use _, [[VAR_C]]<br class="">
> +# CHECK: DBG_VALUE 1, 0, [[VAR_I]]<br class="">
> +<br class="">
> +# CHECK: bb.2.for.body<br class="">
> +# CHECK: DBG_VALUE debug-use [[REG_I:%r[0-9]+]], debug-use _, [[VAR_I]]<br class="">
> +# CHECK: DBG_VALUE debug-use [[REG_C]], debug-use _, [[VAR_C]]<br class="">
> +# CHECK: DBG_VALUE debug-use [[REG_B]], debug-use _, [[VAR_B]]<br class="">
> +# CHECK: DBG_VALUE debug-use [[REG_A]], debug-use _, [[VAR_A]]<br class="">
> +# CHECK: DBG_VALUE debug-use [[REG_I]], debug-use _, [[VAR_I]]<br class="">
> +<br class="">
> +# CHECK: bb.3.for.cond<br class="">
> +# CHECK: DBG_VALUE debug-use [[REG_C]], debug-use _, [[VAR_C]]<br class="">
> +# CHECK: DBG_VALUE debug-use [[REG_B]], debug-use _, [[VAR_B]]<br class="">
> +# CHECK: DBG_VALUE debug-use [[REG_A]], debug-use _, [[VAR_A]]<br class="">
> +# CHECK: DBG_VALUE debug-use [[REG_I]], debug-use _, [[VAR_I]]<br class="">
> +<br class="">
> +# CHECK: bb.4.for.cond.cleanup<br class="">
> +# CHECK: DBG_VALUE debug-use [[REG_I]], debug-use _, [[VAR_I]]<br class="">
> +# CHECK: DBG_VALUE debug-use [[REG_C]], debug-use _, [[VAR_C]]<br class="">
> +# CHECK: DBG_VALUE debug-use [[REG_B]], debug-use _, [[VAR_B]]<br class="">
> +# CHECK: DBG_VALUE debug-use [[REG_A]], debug-use _, [[VAR_A]]<br class="">
> +<br class="">
> +# CHECK: bb.5.if.end<br class="">
> +# CHECK: DBG_VALUE debug-use [[REG_B]], debug-use _, [[VAR_B]]<br class="">
> +# CHECK: DBG_VALUE debug-use [[REG_A]], debug-use _, [[VAR_A]]<br class="">
> +--- |<br class="">
> + ; ModuleID = '/data/kwalker/work/<wbr class="">OpenSource-llvm/llvm/test/<wbr class="">CodeGen/ARM/dbg-range-<wbr class="">extension.ll'<br class="">
> + source_filename = "/data/kwalker/work/<wbr class="">OpenSource-llvm/llvm/test/<wbr class="">CodeGen/ARM/dbg-range-<wbr class="">extension.ll"<br class="">
> + target datalayout = "e-m:e-p:32:32-i64:64-v128:64:<wbr class="">128-a:0:32-n32-S64"<br class="">
> + target triple = "arm---eabi"<br class="">
> +<br class="">
> + ; Function Attrs: minsize nounwind optsize<br class="">
> + define void @func(i32 %a) local_unnamed_addr #0 !dbg !8 {<br class="">
> + entry:<br class="">
> + tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !13, metadata !20), !dbg !21<br class="">
> + %call = tail call i32 @func2(i32 10, i32 11) #0, !dbg !22<br class="">
> + tail call void @llvm.dbg.value(metadata i32 %call, i64 0, metadata !14, metadata !20), !dbg !23<br class="">
> + %tobool = icmp eq i32 %a, 0, !dbg !24<br class="">
> + br i1 %tobool, label %if.end, label %if.then, !dbg !25<br class="">
> +<br class="">
> + if.then: ; preds = %entry<br class="">
> + %call1 = tail call i32 @func2(i32 12, i32 13) #0, !dbg !26<br class="">
> + tail call void @llvm.dbg.value(metadata i32 %call1, i64 0, metadata !15, metadata !20), !dbg !27<br class="">
> + tail call void @llvm.dbg.value(metadata i32 1, i64 0, metadata !18, metadata !20), !dbg !28<br class="">
> + br label %for.cond, !dbg !29<br class="">
> +<br class="">
> + for.cond: ; preds = %for.body, %if.then<br class="">
> + %i.0 = phi i32 [ 1, %if.then ], [ %inc, %for.body ]<br class="">
> + tail call void @llvm.dbg.value(metadata i32 %i.0, i64 0, metadata !18, metadata !20), !dbg !28<br class="">
> + %cmp = icmp slt i32 %i.0, %a, !dbg !30<br class="">
> + br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !33<br class="">
> +<br class="">
> + for.cond.cleanup: ; preds = %for.cond<br class="">
> + %call3 = tail call i32 @func2(i32 %call, i32 %call1) #0, !dbg !34<br class="">
> + br label %if.end, !dbg !35<br class="">
> +<br class="">
> + for.body: ; preds = %for.cond<br class="">
> + %0 = add i32 %call, %i.0, !dbg !36<br class="">
> + %call2 = tail call i32 @func2(i32 %i.0, i32 %0) #0, !dbg !36<br class="">
> + %inc = add nuw nsw i32 %i.0, 1, !dbg !38<br class="">
> + tail call void @llvm.dbg.value(metadata i32 %inc, i64 0, metadata !18, metadata !20), !dbg !28<br class="">
> + br label %for.cond, !dbg !40, !llvm.loop !41<br class="">
> +<br class="">
> + if.end: ; preds = %for.cond.cleanup, %entry<br class="">
> + %call4 = tail call i32 @func2(i32 %call, i32 %a) #0, !dbg !43<br class="">
> + ret void, !dbg !44<br class="">
> + }<br class="">
> +<br class="">
> + ; Function Attrs: minsize optsize<br class="">
> + declare i32 @func2(i32, i32) local_unnamed_addr #1<br class="">
> +<br class="">
> + ; Function Attrs: nounwind readnone<br class="">
> + declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2<br class="">
> +<br class="">
> + ; Function Attrs: nounwind<br class="">
> + declare void @llvm.stackprotector(i8*, i8**) #3<br class="">
> +<br class="">
> + attributes #0 = { minsize nounwind optsize }<br class="">
> + attributes #1 = { minsize optsize }<br class="">
> + attributes #2 = { nounwind readnone }<br class="">
> + attributes #3 = { nounwind }<br class="">
> +<br class="">
> + !<a href="http://llvm.dbg.cu/" rel="noreferrer" target="_blank" class="">llvm.dbg.cu</a> = !{!0}<br class="">
> + !llvm.module.flags = !{!3, !4, !5, !6}<br class="">
> + !llvm.ident = !{!7}<br class="">
> +<br class="">
> + !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)<br class="">
> + !1 = !DIFile(filename: "loop.c", directory: "/tmp")<br class="">
> + !2 = !{}<br class="">
> + !3 = !{i32 2, !"Dwarf Version", i32 4}<br class="">
> + !4 = !{i32 2, !"Debug Info Version", i32 3}<br class="">
> + !5 = !{i32 1, !"wchar_size", i32 4}<br class="">
> + !6 = !{i32 1, !"min_enum_size", i32 4}<br class="">
> + !7 = !{!"clang version 4.0.0 (<a href="http://llvm.org/git/clang.git" rel="noreferrer" target="_blank" class="">http://llvm.org/git/clang.git</a> b8f10df3679b36f51e1de7c4351b82<wbr class="">d297825089) (<a href="http://llvm.org/git/llvm.git" rel="noreferrer" target="_blank" class="">http://llvm.org/git/llvm.git</a> c2a5d16d1e3b8c49f5bbb1ff87a76a<wbr class="">c4f88edb89)"}<br class="">
> + !8 = distinct !DISubprogram(name: "func", scope: !1, file: !1, line: 2, type: !9, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !12)<br class="">
> + !9 = !DISubroutineType(types: !10)<br class="">
> + !10 = !{null, !11}<br class="">
> + !11 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)<br class="">
> + !12 = !{!13, !14, !15, !18}<br class="">
> + !13 = !DILocalVariable(name: "a", arg: 1, scope: !8, file: !1, line: 2, type: !11)<br class="">
> + !14 = !DILocalVariable(name: "b", scope: !8, file: !1, line: 3, type: !11)<br class="">
> + !15 = !DILocalVariable(name: "c", scope: !16, file: !1, line: 5, type: !11)<br class="">
> + !16 = distinct !DILexicalBlock(scope: !17, file: !1, line: 4, column: 9)<br class="">
> + !17 = distinct !DILexicalBlock(scope: !8, file: !1, line: 4, column: 6)<br class="">
> + !18 = !DILocalVariable(name: "i", scope: !19, file: !1, line: 6, type: !11)<br class="">
> + !19 = distinct !DILexicalBlock(scope: !16, file: !1, line: 6, column: 3)<br class="">
> + !20 = !DIExpression()<br class="">
> + !21 = !DILocation(line: 2, column: 15, scope: !8)<br class="">
> + !22 = !DILocation(line: 3, column: 17, scope: !8)<br class="">
> + !23 = !DILocation(line: 3, column: 13, scope: !8)<br class="">
> + !24 = !DILocation(line: 4, column: 6, scope: !17)<br class="">
> + !25 = !DILocation(line: 4, column: 6, scope: !8)<br class="">
> + !26 = !DILocation(line: 5, column: 11, scope: !16)<br class="">
> + !27 = !DILocation(line: 5, column: 7, scope: !16)<br class="">
> + !28 = !DILocation(line: 6, column: 11, scope: !19)<br class="">
> + !29 = !DILocation(line: 6, column: 7, scope: !19)<br class="">
> + !30 = !DILocation(line: 6, column: 20, scope: !31)<br class="">
> + !31 = !DILexicalBlockFile(scope: !32, file: !1, discriminator: 1)<br class="">
> + !32 = distinct !DILexicalBlock(scope: !19, file: !1, line: 6, column: 3)<br class="">
> + !33 = !DILocation(line: 6, column: 3, scope: !31)<br class="">
> + !34 = !DILocation(line: 9, column: 3, scope: !16)<br class="">
> + !35 = !DILocation(line: 10, column: 2, scope: !16)<br class="">
> + !36 = !DILocation(line: 7, column: 4, scope: !37)<br class="">
> + !37 = distinct !DILexicalBlock(scope: !32, file: !1, line: 6, column: 30)<br class="">
> + !38 = !DILocation(line: 6, column: 26, scope: !39)<br class="">
> + !39 = !DILexicalBlockFile(scope: !32, file: !1, discriminator: 3)<br class="">
> + !40 = !DILocation(line: 6, column: 3, scope: !39)<br class="">
> + !41 = distinct !{!41, !42}<br class="">
> + !42 = !DILocation(line: 6, column: 3, scope: !16)<br class="">
> + !43 = !DILocation(line: 11, column: 2, scope: !8)<br class="">
> + !44 = !DILocation(line: 12, column: 1, scope: !8)<br class="">
> +<br class="">
> +...<br class="">
> +---<br class="">
> +name: func<br class="">
> +alignment: 2<br class="">
> +exposesReturnsTwice: false<br class="">
> +legalized: false<br class="">
> +regBankSelected: false<br class="">
> +selected: false<br class="">
> +tracksRegLiveness: false<br class="">
> +liveins:<br class="">
> + - { reg: '%r0' }<br class="">
> +calleeSavedRegisters: [ '%lr', '%d8', '%d9', '%d10', '%d11', '%d12', '%d13',<br class="">
> + '%d14', '%d15', '%q4', '%q5', '%q6', '%q7', '%r4',<br class="">
> + '%r5', '%r6', '%r7', '%r8', '%r9', '%r10', '%r11',<br class="">
> + '%s16', '%s17', '%s18', '%s19', '%s20', '%s21',<br class="">
> + '%s22', '%s23', '%s24', '%s25', '%s26', '%s27',<br class="">
> + '%s28', '%s29', '%s30', '%s31', '%d8_d10', '%d9_d11',<br class="">
> + '%d10_d12', '%d11_d13', '%d12_d14', '%d13_d15',<br class="">
> + '%q4_q5', '%q5_q6', '%q6_q7', '%q4_q5_q6_q7', '%r4_r5',<br class="">
> + '%r6_r7', '%r8_r9', '%r10_r11', '%d8_d9_d10', '%d9_d10_d11',<br class="">
> + '%d10_d11_d12', '%d11_d12_d13', '%d12_d13_d14',<br class="">
> + '%d13_d14_d15', '%d8_d10_d12', '%d9_d11_d13', '%d10_d12_d14',<br class="">
> + '%d11_d13_d15', '%d8_d10_d12_d14', '%d9_d11_d13_d15',<br class="">
> + '%d9_d10', '%d11_d12', '%d13_d14', '%d9_d10_d11_d12',<br class="">
> + '%d11_d12_d13_d14' ]<br class="">
> +frameInfo:<br class="">
> + isFrameAddressTaken: false<br class="">
> + isReturnAddressTaken: false<br class="">
> + hasStackMap: false<br class="">
> + hasPatchPoint: false<br class="">
> + stackSize: 24<br class="">
> + offsetAdjustment: 0<br class="">
> + maxAlignment: 4<br class="">
> + adjustsStack: true<br class="">
> + hasCalls: true<br class="">
> + maxCallFrameSize: 0<br class="">
> + hasOpaqueSPAdjustment: false<br class="">
> + hasVAStart: false<br class="">
> + hasMustTailInVarArgFunc: false<br class="">
> +stack:<br class="">
> + - { id: 0, type: spill-slot, offset: -4, size: 4, alignment: 4, callee-saved-register: '%lr' }<br class="">
> + - { id: 1, type: spill-slot, offset: -8, size: 4, alignment: 4, callee-saved-register: '%r11' }<br class="">
> + - { id: 2, type: spill-slot, offset: -12, size: 4, alignment: 4, callee-saved-register: '%r7' }<br class="">
> + - { id: 3, type: spill-slot, offset: -16, size: 4, alignment: 4, callee-saved-register: '%r6' }<br class="">
> + - { id: 4, type: spill-slot, offset: -20, size: 4, alignment: 4, callee-saved-register: '%r5' }<br class="">
> + - { id: 5, type: spill-slot, offset: -24, size: 4, alignment: 4, callee-saved-register: '%r4' }<br class="">
> +body: |<br class="">
> + bb.0.entry:<br class="">
> + successors: %bb.5.if.end, %bb.1.if.then<br class="">
> + liveins: %r0, %r4, %r5, %r6, %r7, %r11, %lr<br class="">
> +<br class="">
> + %sp = frame-setup STMDB_UPD %sp, 14, _, killed %r4, killed %r5, killed %r6, killed %r7, killed %r11, killed %lr<br class="">
> + frame-setup CFI_INSTRUCTION def_cfa_offset 24<br class="">
> + frame-setup CFI_INSTRUCTION offset %lr, -4<br class="">
> + frame-setup CFI_INSTRUCTION offset %r11, -8<br class="">
> + frame-setup CFI_INSTRUCTION offset %r7, -12<br class="">
> + frame-setup CFI_INSTRUCTION offset %r6, -16<br class="">
> + frame-setup CFI_INSTRUCTION offset %r5, -20<br class="">
> + frame-setup CFI_INSTRUCTION offset %r4, -24<br class="">
> + DBG_VALUE debug-use %r0, debug-use _, !13, !20, debug-location !21<br class="">
> + %r4 = MOVr killed %r0, 14, _, _<br class="">
> + DBG_VALUE debug-use %r4, debug-use _, !13, !20, debug-location !21<br class="">
> + %r0 = MOVi 10, 14, _, _, debug-location !22<br class="">
> + %r1 = MOVi 11, 14, _, _, debug-location !22<br class="">
> + BL @func2, csr_aapcs, implicit-def dead %lr, implicit %sp, implicit killed %r0, implicit killed %r1, implicit-def %sp, implicit-def %r0, debug-location !22<br class="">
> + %r5 = MOVr killed %r0, 14, _, _, debug-location !22<br class="">
> + DBG_VALUE debug-use %r5, debug-use _, !14, !20, debug-location !23<br class="">
> + CMPri %r4, 0, 14, _, implicit-def %cpsr, debug-location !25<br class="">
> + Bcc %bb.5.if.end, 0, killed %cpsr<br class="">
> +<br class="">
> + bb.1.if.then:<br class="">
> + successors: %bb.3.for.cond<br class="">
> + liveins: %r4, %r5<br class="">
> +<br class="">
> + %r0 = MOVi 12, 14, _, _, debug-location !26<br class="">
> + %r1 = MOVi 13, 14, _, _, debug-location !26<br class="">
> + BL @func2, csr_aapcs, implicit-def dead %lr, implicit %sp, implicit killed %r0, implicit killed %r1, implicit-def %sp, implicit-def %r0, debug-location !26<br class="">
> + %r6 = MOVr killed %r0, 14, _, _, debug-location !26<br class="">
> + DBG_VALUE debug-use %r6, debug-use _, !15, !20, debug-location !27<br class="">
> + %r7 = MOVi 1, 14, _, _<br class="">
> + DBG_VALUE 1, 0, !18, !20, debug-location !28<br class="">
> + B %bb.3.for.cond<br class="">
> +<br class="">
> + bb.2.for.body:<br class="">
> + successors: %bb.3.for.cond<br class="">
> + liveins: %r4, %r5, %r6, %r7<br class="">
> +<br class="">
> + %r1 = ADDrr %r5, %r7, 14, _, _, debug-location !36<br class="">
> + %r0 = MOVr %r7, 14, _, _, debug-location !36<br class="">
> + BL @func2, csr_aapcs, implicit-def dead %lr, implicit %sp, implicit killed %r0, implicit killed %r1, implicit-def %sp, implicit-def dead %r0, debug-location !36<br class="">
> + %r7 = ADDri killed %r7, 1, 14, _, _, debug-location !38<br class="">
> + DBG_VALUE debug-use %r7, debug-use _, !18, !20, debug-location !28<br class="">
> +<br class="">
> + bb.3.for.cond:<br class="">
> + successors: %bb.2.for.body, %bb.4.for.cond.cleanup<br class="">
> + liveins: %r4, %r5, %r6, %r7<br class="">
> +<br class="">
> + DBG_VALUE debug-use %r7, debug-use _, !18, !20, debug-location !28<br class="">
> + CMPrr %r7, %r4, 14, _, implicit-def %cpsr, debug-location !33<br class="">
> + Bcc %bb.2.for.body, 11, killed %cpsr, debug-location !33<br class="">
> +<br class="">
> + bb.4.for.cond.cleanup:<br class="">
> + successors: %bb.5.if.end<br class="">
> + liveins: %r4, %r5, %r6<br class="">
> +<br class="">
> + %r0 = MOVr %r5, 14, _, _, debug-location !34<br class="">
> + %r1 = MOVr killed %r6, 14, _, _, debug-location !34<br class="">
> + BL @func2, csr_aapcs, implicit-def dead %lr, implicit %sp, implicit killed %r0, implicit killed %r1, implicit-def %sp, implicit-def dead %r0, debug-location !34<br class="">
> +<br class="">
> + bb.5.if.end:<br class="">
> + liveins: %r4, %r5<br class="">
> +<br class="">
> + %r0 = MOVr killed %r5, 14, _, _, debug-location !43<br class="">
> + %r1 = MOVr killed %r4, 14, _, _, debug-location !43<br class="">
> + %sp = LDMIA_UPD %sp, 14, _, def %r4, def %r5, def %r6, def %r7, def %r11, def %lr, debug-location !43<br class="">
> + TAILJMPd @func2, implicit %sp, implicit %sp, implicit killed %r0, implicit killed %r1, debug-location !43<br class="">
> +<br class="">
> +...<br class="">
><br class="">
><br class="">
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