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
8 ; struct foo { bool b; long i; };
9 ; void f(bool b, bool expr, foo g) {
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.
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))
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
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),
28 %struct.foo = type { i8, i64 }
30 ; Function Attrs: noinline nounwind uwtable
31 define void @_Z1fbb3foo(i1 zeroext %b, i1 zeroext %frag, i8 %g.coerce0, i64 %g.coerce1) #0 !dbg !6 {
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
50 ; CHECK: ![[VAR_STRUCT]] = !DILocalVariable(name: "g"
51 ; CHECK: ![[VAR_BOOL]] = !DILocalVariable(name: "b"
52 ; CHECK: ![[VAR_FRAG]] = !DILocalVariable(name: "frag"
54 ; Function Attrs: nounwind readnone speculatable
55 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
57 attributes #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" }
58 attributes #1 = { nounwind readnone speculatable }
61 !llvm.module.flags = !{!3, !4}
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")
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")
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)
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)