1; Checks that llvm.dbg.declare -> llvm.dbg.value conversion utility 2; (here exposed through the SROA) pass refers to [s|z]exts of values (as 3; opposed to the operand of a [s|z]ext). 4; RUN: opt -S -passes='sroa' %s | FileCheck %s 5; RUN: opt --try-experimental-debuginfo-iterators -S -passes='sroa' %s | FileCheck %s 6 7; Built from: 8; struct foo { bool b; long i; }; 9; void f(bool b, bool expr, foo g) { 10; } 11; And modifying the frag dbg.declare to use a fragmented DIExpression (with offset: 0, size: 4) 12; to test the dbg.declare+fragment case here. 13 14; Expect two fragments: 15; * first starting at bit 0, 8 bits (for the bool) 16; * second starting at bit 32, 32 bits (for the long) 17; (this happens to create/demonstrate a gap from bits [7, 32)) 18 19; But also check that a complex expression is not used for a lone bool 20; parameter. It can reference the register it's in directly without masking off 21; high bits or anything 22 23; CHECK: #dbg_value(i8 %g.coerce0, ![[VAR_STRUCT:[0-9]+]], !DIExpression(DW_OP_LLVM_fragment, 0, 8), 24; CHECK: #dbg_value(i64 %g.coerce1, ![[VAR_STRUCT]], !DIExpression(DW_OP_LLVM_fragment, 32, 64), 25; CHECK: #dbg_value(i8 %frombool, ![[VAR_BOOL:[0-9]+]], !DIExpression(), 26; CHECK: #dbg_value(i8 %frombool1, ![[VAR_FRAG:[0-9]+]], !DIExpression(DW_OP_LLVM_fragment, 0, 4), 27 28%struct.foo = type { i8, i64 } 29 30; Function Attrs: noinline nounwind uwtable 31define void @_Z1fbb3foo(i1 zeroext %b, i1 zeroext %frag, i8 %g.coerce0, i64 %g.coerce1) #0 !dbg !6 { 32entry: 33 %g = alloca %struct.foo, align 8 34 %b.addr = alloca i8, align 1 35 %frag.addr = alloca i8, align 1 36 %0 = getelementptr inbounds { i8, i64 }, ptr %g, i32 0, i32 0 37 store i8 %g.coerce0, ptr %0, align 8 38 %1 = getelementptr inbounds { i8, i64 }, ptr %g, i32 0, i32 1 39 store i64 %g.coerce1, ptr %1, align 8 40 %frombool = zext i1 %b to i8 41 store i8 %frombool, ptr %b.addr, align 1 42 call void @llvm.dbg.declare(metadata ptr %b.addr, metadata !15, metadata !16), !dbg !17 43 %frombool1 = sext i1 %frag to i8 44 store i8 %frombool1, ptr %frag.addr, align 1 45 call void @llvm.dbg.declare(metadata ptr %frag.addr, metadata !18, metadata !23), !dbg !19 46 call void @llvm.dbg.declare(metadata ptr %g, metadata !20, metadata !16), !dbg !21 47 ret void, !dbg !22 48} 49 50; CHECK: ![[VAR_STRUCT]] = !DILocalVariable(name: "g" 51; CHECK: ![[VAR_BOOL]] = !DILocalVariable(name: "b" 52; CHECK: ![[VAR_FRAG]] = !DILocalVariable(name: "frag" 53 54; Function Attrs: nounwind readnone speculatable 55declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 56 57attributes #0 = { noinline nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } 58attributes #1 = { nounwind readnone speculatable } 59 60!llvm.dbg.cu = !{!0} 61!llvm.module.flags = !{!3, !4} 62!llvm.ident = !{!5} 63 64!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 5.0.0 (trunk 303077) (llvm/trunk 303098)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 65!1 = !DIFile(filename: "foo.cpp", directory: "/usr/local/google/home/blaikie/dev/scratch") 66!2 = !{} 67!3 = !{i32 2, !"Dwarf Version", i32 4} 68!4 = !{i32 2, !"Debug Info Version", i32 3} 69!5 = !{!"clang version 5.0.0 (trunk 303077) (llvm/trunk 303098)"} 70!6 = distinct !DISubprogram(name: "f", linkageName: "_Z1fbb3foo", scope: !1, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) 71!7 = !DISubroutineType(types: !8) 72!8 = !{null, !9, !9, !10} 73!9 = !DIBasicType(name: "bool", size: 8, encoding: DW_ATE_boolean) 74!10 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "foo", file: !1, line: 1, size: 128, elements: !11, identifier: "_ZTS3foo") 75!11 = !{!12, !13} 76!12 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !10, file: !1, line: 1, baseType: !9, size: 8) 77!13 = !DIDerivedType(tag: DW_TAG_member, name: "i", scope: !10, file: !1, line: 1, baseType: !14, size: 64, offset: 64) 78!14 = !DIBasicType(name: "long int", size: 64, encoding: DW_ATE_signed) 79!15 = !DILocalVariable(name: "b", arg: 1, scope: !6, file: !1, line: 2, type: !9) 80!16 = !DIExpression() 81!17 = !DILocation(line: 2, column: 13, scope: !6) 82!18 = !DILocalVariable(name: "frag", arg: 2, scope: !6, file: !1, line: 2, type: !9) 83!19 = !DILocation(line: 2, column: 21, scope: !6) 84!20 = !DILocalVariable(name: "g", arg: 3, scope: !6, file: !1, line: 2, type: !10) 85!21 = !DILocation(line: 2, column: 31, scope: !6) 86!22 = !DILocation(line: 3, column: 1, scope: !6) 87!23 = !DIExpression(DW_OP_LLVM_fragment, 0, 4) 88