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1; RUN: opt %s -passes=dce -S | FileCheck %s2 3; Tests the salvaging of binary operators that use more than one non-constant4; SSA value.5 6; CHECK: #dbg_value(!DIArgList(i32 %a, i32 %b),7; CHECK-SAME: ![[VAR_C:[0-9]+]],8; CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus, DW_OP_stack_value),9 10; CHECK: ![[VAR_C]] = !DILocalVariable(name: "c"11 12define i32 @"?multiply@@YAHHH@Z"(i32 %a, i32 %b) !dbg !8 {13entry:14 call void @llvm.dbg.value(metadata i32 %b, metadata !12, metadata !DIExpression()), !dbg !1315 call void @llvm.dbg.value(metadata i32 %a, metadata !14, metadata !DIExpression()), !dbg !1316 %add = add nsw i32 %a, %b, !dbg !1517 call void @llvm.dbg.value(metadata i32 %add, metadata !16, metadata !DIExpression()), !dbg !1318 %mul = mul nsw i32 %a, %b, !dbg !1719 ret i32 %mul, !dbg !1720}21 22declare void @llvm.dbg.value(metadata, metadata, metadata)23 24!llvm.dbg.cu = !{!0}25!llvm.module.flags = !{!3, !4, !5, !6}26!llvm.ident = !{!7}27 28!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 11.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)29!1 = !DIFile(filename: "test.cpp", directory: "/")30!2 = !{}31!3 = !{i32 2, !"CodeView", i32 1}32!4 = !{i32 2, !"Debug Info Version", i32 3}33!5 = !{i32 1, !"wchar_size", i32 2}34!6 = !{i32 7, !"PIC Level", i32 2}35!7 = !{!"clang version 11.0.0"}36!8 = distinct !DISubprogram(name: "multiply", linkageName: "?multiply@@YAHHH@Z", scope: !1, file: !1, line: 1, type: !9, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)37!9 = !DISubroutineType(types: !10)38!10 = !{!11, !11, !11}39!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)40!12 = !DILocalVariable(name: "b", arg: 2, scope: !8, file: !1, line: 1, type: !11)41!13 = !DILocation(line: 0, scope: !8)42!14 = !DILocalVariable(name: "a", arg: 1, scope: !8, file: !1, line: 1, type: !11)43!15 = !DILocation(line: 2, scope: !8)44!16 = !DILocalVariable(name: "c", scope: !8, file: !1, line: 2, type: !11)45!17 = !DILocation(line: 3, scope: !8)46