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1; RUN: opt < %s -passes=instcombine -instcombine-lower-dbg-declare=0 -S \2; RUN: | FileCheck %s --check-prefix=CHECK --check-prefix=NOLOWER3; RUN: opt < %s -passes=instcombine -instcombine-lower-dbg-declare=1 -S | FileCheck %s4 5target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"6target triple = "x86_64--linux"7 8%struct.TwoRegs = type { i64, i64 }9 10declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone11 12declare i64 @llvm.objectsize.i64.p0(ptr, i1) nounwind readnone13 14declare ptr @passthru_callee(ptr, i32, i64, i64)15 16define ptr @passthru(ptr %a, i32 %b, i64 %c) !dbg !1 {17entry:18 %a.addr = alloca ptr, align 819 %b.addr = alloca i32, align 420 %c.addr = alloca i64, align 821 store ptr %a, ptr %a.addr, align 822 call void @llvm.dbg.declare(metadata ptr %a.addr, metadata !0, metadata !DIExpression()), !dbg !1623 store i32 %b, ptr %b.addr, align 424 call void @llvm.dbg.declare(metadata ptr %b.addr, metadata !7, metadata !DIExpression()), !dbg !1825 store i64 %c, ptr %c.addr, align 826 call void @llvm.dbg.declare(metadata ptr %c.addr, metadata !9, metadata !DIExpression()), !dbg !2027 %tmp = load ptr, ptr %a.addr, align 8, !dbg !2128 %tmp1 = load i32, ptr %b.addr, align 4, !dbg !2129 %tmp2 = load i64, ptr %c.addr, align 8, !dbg !2130 %tmp3 = load ptr, ptr %a.addr, align 8, !dbg !2131 %0 = call i64 @llvm.objectsize.i64.p0(ptr %tmp3, i1 false), !dbg !2132 %call = call ptr @passthru_callee(ptr %tmp, i32 %tmp1, i64 %tmp2, i64 %0), !dbg !2133 ret ptr %call, !dbg !2134}35 36; CHECK-LABEL: define ptr @passthru(ptr %a, i32 %b, i64 %c)37; CHECK-NOT: alloca38; CHECK-NOT: store39; CHECK-NOT: #dbg_declare40; CHECK: #dbg_value(ptr %a, {{.*}})41; CHECK-NOT: store42; CHECK: #dbg_value(i32 %b, {{.*}})43; CHECK-NOT: store44; CHECK: #dbg_value(i64 %c, {{.*}})45; CHECK-NOT: store46; CHECK: call ptr @passthru_callee(ptr %a, i32 %b, i64 %c, i64 %{{.*}})47 48declare void @tworegs_callee(i64, i64)49 50; Lowering dbg.declare in instcombine doesn't handle this case very well.51 52define void @tworegs(i64 %o.coerce0, i64 %o.coerce1) !dbg !31 {53entry:54 %o = alloca %struct.TwoRegs, align 855 %0 = getelementptr inbounds { i64, i64 }, ptr %o, i32 0, i32 056 store i64 %o.coerce0, ptr %0, align 857 %1 = getelementptr inbounds { i64, i64 }, ptr %o, i32 0, i32 158 store i64 %o.coerce1, ptr %1, align 859 call void @llvm.dbg.declare(metadata ptr %o, metadata !35, metadata !DIExpression()), !dbg !3260 %2 = getelementptr inbounds { i64, i64 }, ptr %o, i32 0, i32 0, !dbg !3361 %3 = load i64, ptr %2, align 8, !dbg !3362 %4 = getelementptr inbounds { i64, i64 }, ptr %o, i32 0, i32 1, !dbg !3363 %5 = load i64, ptr %4, align 8, !dbg !3364 call void @tworegs_callee(i64 %3, i64 %5), !dbg !3365 ret void, !dbg !3366}67 68; NOLOWER-LABEL: define void @tworegs(i64 %o.coerce0, i64 %o.coerce1)69; NOLOWER-NOT: alloca70; NOLOWER-NOT: store71; NOLOWER-NOT: #dbg_declare72; Here we want to find: call void @llvm.dbg.value(metadata i64 %o.coerce0, metadata [[VARIABLE_O]], metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64))73; NOLOWER: #dbg_value(i64 poison, {{.*}})74; NOLOWER-NOT: store75; Here we want to find: call void @llvm.dbg.value(metadata i64 %o.coerce1, metadata [[VARIABLE_O]], metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64))76; NOLOWER: #dbg_value(i64 poison, {{.*}})77; NOLOWER-NOT: store78; NOLOWER: call void @tworegs_callee(i64 %o.coerce0, i64 %o.coerce1)79 80 81!llvm.dbg.cu = !{!3}82!llvm.module.flags = !{!30}83 84!0 = !DILocalVariable(name: "a", line: 78, arg: 1, scope: !1, file: !2, type: !6)85!1 = distinct !DISubprogram(name: "passthru", line: 79, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !3, scopeLine: 79, file: !27, scope: !2, type: !4, retainedNodes: !25)86!2 = !DIFile(filename: "string.h", directory: "Game")87!3 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk 127710)", isOptimized: true, emissionKind: FullDebug, file: !28, enums: !29, retainedTypes: !29)88!4 = !DISubroutineType(types: !5)89!5 = !{!6}90!6 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, scope: !3, baseType: null)91!7 = !DILocalVariable(name: "b", line: 78, arg: 2, scope: !1, file: !2, type: !8)92!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)93!9 = !DILocalVariable(name: "c", line: 78, arg: 3, scope: !1, file: !2, type: !12)94!12 = !DIBasicType(tag: DW_TAG_base_type, name: "long unsigned int", size: 64, align: 64, encoding: DW_ATE_unsigned)95!16 = !DILocation(line: 78, column: 28, scope: !1)96!18 = !DILocation(line: 78, column: 40, scope: !1)97!20 = !DILocation(line: 78, column: 54, scope: !1)98!21 = !DILocation(line: 80, column: 3, scope: !22)99!22 = distinct !DILexicalBlock(line: 80, column: 3, file: !27, scope: !23)100!23 = distinct !DILexicalBlock(line: 79, column: 1, file: !27, scope: !1)101!25 = !{!0, !7, !9}102!27 = !DIFile(filename: "string.h", directory: "Game")103!28 = !DIFile(filename: "bits.c", directory: "Game")104!29 = !{}105!30 = !{i32 1, !"Debug Info Version", i32 3}106 107!31 = distinct !DISubprogram(name: "tworegs", scope: !28, file: !28, line: 4, type: !4, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: true, unit: !3, retainedNodes: !34)108!32 = !DILocation(line: 4, column: 23, scope: !31)109!33 = !DILocation(line: 5, column: 3, scope: !31)110!34 = !{!35}111!35 = !DILocalVariable(name: "o", arg: 1, scope: !31, file: !28, line: 4, type: !36)112!36 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "TwoRegs", file: !28, line: 1, size: 128, elements: !37)113!37 = !{!38, !39}114!38 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !36, file: !28, line: 1, baseType: !12, size: 64)115!39 = !DIDerivedType(tag: DW_TAG_member, name: "y", scope: !36, file: !28, line: 1, baseType: !12, size: 64)116!40 = !DISubroutineType(types: !41)117!41 = !{!36}118