; RUN: opt %s -passes=dce -S | FileCheck %s | |
; Tests the salvaging of binary operators that use more than one non-constant | |
; SSA value. | |
; CHECK: call void @llvm.dbg.value(metadata !DIArgList(i32 %a, i32 %b), | |
; CHECK-SAME: ![[VAR_C:[0-9]+]], | |
; CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus, DW_OP_stack_value)) | |
; CHECK: ![[VAR_C]] = !DILocalVariable(name: "c" | |
define i32 @"?multiply@@YAHHH@Z"(i32 %a, i32 %b) !dbg !8 { | |
entry: | |
call void @llvm.dbg.value(metadata i32 %b, metadata !12, metadata !DIExpression()), !dbg !13 | |
call void @llvm.dbg.value(metadata i32 %a, metadata !14, metadata !DIExpression()), !dbg !13 | |
%add = add nsw i32 %a, %b, !dbg !15 | |
call void @llvm.dbg.value(metadata i32 %add, metadata !16, metadata !DIExpression()), !dbg !13 | |
%mul = mul nsw i32 %a, %b, !dbg !17 | |
ret i32 %mul, !dbg !17 | |
} | |
declare void @llvm.dbg.value(metadata, metadata, metadata) | |
!llvm.dbg.cu = !{!0} | |
!llvm.module.flags = !{!3, !4, !5, !6} | |
!llvm.ident = !{!7} | |
!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) | |
!1 = !DIFile(filename: "test.cpp", directory: "/") | |
!2 = !{} | |
!3 = !{i32 2, !"CodeView", i32 1} | |
!4 = !{i32 2, !"Debug Info Version", i32 3} | |
!5 = !{i32 1, !"wchar_size", i32 2} | |
!6 = !{i32 7, !"PIC Level", i32 2} | |
!7 = !{!"clang version 11.0.0"} | |
!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) | |
!9 = !DISubroutineType(types: !10) | |
!10 = !{!11, !11, !11} | |
!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) | |
!12 = !DILocalVariable(name: "b", arg: 2, scope: !8, file: !1, line: 1, type: !11) | |
!13 = !DILocation(line: 0, scope: !8) | |
!14 = !DILocalVariable(name: "a", arg: 1, scope: !8, file: !1, line: 1, type: !11) | |
!15 = !DILocation(line: 2, scope: !8) | |
!16 = !DILocalVariable(name: "c", scope: !8, file: !1, line: 2, type: !11) | |
!17 = !DILocation(line: 3, scope: !8) |