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1; FIXME: use -stop-after when MIR serialization output includes needed debug info.2; RUN: llc < %s -print-after=wasm-reg-stackify 2>&1 | FileCheck %s3 4; CHECK: {{.*}}After WebAssembly Register Stackify5; CHECK: bb.2.for.body:6; CHECK: [[TEEREG:%[0-9]+]]:i32, %{{[0-9]+}}:i32 = TEE_I32 {{.*}} fib2.c:6:77; CHECK-NEXT: DBG_VALUE [[TEEREG]]:i32, $noreg, !"a", {{.*}} fib2.c:2:138 9; ModuleID = 'fib2.bc'10; The test generated via: clang --target=wasm32-unknown-unknown-wasm fib2.c -g -O211; All non-"!dbg !18" llvm.dbg.value calls and attributes were removed.12source_filename = "fib2.c"13; int fib(int n) {14; int i, t, a = 0, b = 1;15; for (i = 0; i < n; i++) {16; t = a;17; a = b;18; b += t;19; }20; return b;21; }22target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"23target triple = "wasm32-unknown-unknown-wasm"24 25; Function Attrs: nounwind readnone26define hidden i32 @fib(i32 %n) local_unnamed_addr #0 !dbg !7 {27entry:28 call void @llvm.dbg.value(metadata i32 0, metadata !15, metadata !DIExpression()), !dbg !1829 %cmp8 = icmp sgt i32 %n, 0, !dbg !2130 br i1 %cmp8, label %for.body, label %for.end, !dbg !2431 32for.body: ; preds = %entry, %for.body33 %b.011 = phi i32 [ %add, %for.body ], [ 1, %entry ]34 %a.010 = phi i32 [ %b.011, %for.body ], [ 0, %entry ]35 %i.09 = phi i32 [ %inc, %for.body ], [ 0, %entry ]36 call void @llvm.dbg.value(metadata i32 %a.010, metadata !15, metadata !DIExpression()), !dbg !1837 %add = add nsw i32 %b.011, %a.010, !dbg !2638 %inc = add nuw nsw i32 %i.09, 1, !dbg !2839 call void @llvm.dbg.value(metadata i32 %b.011, metadata !15, metadata !DIExpression()), !dbg !1840 %exitcond = icmp eq i32 %inc, %n, !dbg !2141 br i1 %exitcond, label %for.end, label %for.body, !dbg !24, !llvm.loop !2942 43for.end: ; preds = %for.body, %entry44 %b.0.lcssa = phi i32 [ 1, %entry ], [ %add, %for.body ]45 ret i32 %b.0.lcssa, !dbg !3146}47 48; Function Attrs: nounwind readnone speculatable49declare void @llvm.dbg.value(metadata, metadata, metadata) #150 51!llvm.dbg.cu = !{!0}52!llvm.module.flags = !{!3, !4, !5}53!llvm.ident = !{!6}54 55!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 7.0.0 (trunk 337180)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)56!1 = !DIFile(filename: "fib2.c", directory: "/d/y/llvmwasm")57!2 = !{}58!3 = !{i32 2, !"Dwarf Version", i32 4}59!4 = !{i32 2, !"Debug Info Version", i32 3}60!5 = !{i32 1, !"wchar_size", i32 4}61!6 = !{!"clang version 7.0.0 (trunk 337180)"}62!7 = distinct !DISubprogram(name: "fib", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11)63!8 = !DISubroutineType(types: !9)64!9 = !{!10, !10}65!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)66!11 = !{!15}67!15 = !DILocalVariable(name: "a", scope: !7, file: !1, line: 2, type: !10)68!17 = !DILocation(line: 1, column: 13, scope: !7)69!18 = !DILocation(line: 2, column: 13, scope: !7)70!19 = !DILocation(line: 2, column: 20, scope: !7)71!20 = !DILocation(line: 2, column: 7, scope: !7)72!21 = !DILocation(line: 3, column: 17, scope: !22)73!22 = distinct !DILexicalBlock(scope: !23, file: !1, line: 3, column: 3)74!23 = distinct !DILexicalBlock(scope: !7, file: !1, line: 3, column: 3)75!24 = !DILocation(line: 3, column: 3, scope: !23)76!25 = !DILocation(line: 2, column: 10, scope: !7)77!26 = !DILocation(line: 6, column: 7, scope: !27)78!27 = distinct !DILexicalBlock(scope: !22, file: !1, line: 3, column: 27)79!28 = !DILocation(line: 3, column: 23, scope: !22)80!29 = distinct !{!29, !24, !30}81!30 = !DILocation(line: 7, column: 3, scope: !23)82!31 = !DILocation(line: 8, column: 3, scope: !7)83