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129 lines
6.7 KiB
129 lines
6.7 KiB
4 months ago
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; RUN: llc -mtriple=x86_64-unknown-linux-gnu -start-after=codegenprepare -stop-before=finalize-isel -o - %s | FileCheck %s
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; Test case was generated from the following C code,
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; using: clang -g -O1 -S -emit-llvm s.c -o s.ll
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;
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; struct s { long long int i, j; };
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;
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; extern void bar(struct s, struct s, struct s);
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;
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; int f(struct s s1, struct s s2) {
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; volatile struct s tmp = {0};
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; bar(s1, s2, tmp);
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; s1.i = s2.i;
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; s1.j = s2.j;
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; return s1.j + s1.j;
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; }
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; Catch metadata references for involved variables.
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;
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; CHECK-DAG: ![[S1:.*]] = !DILocalVariable(name: "s1"
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; CHECK-DAG: ![[S2:.*]] = !DILocalVariable(name: "s2"
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define dso_local i32 @f(i64 %s1.coerce0, i64 %s1.coerce1, i64 %s2.coerce0, i64 %s2.coerce1) local_unnamed_addr #0 !dbg !7 {
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; We expect DBG_VALUE instructions for the arguments at the entry.
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; CHECK-LABEL: name: f
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; CHECK-NOT: DBG_VALUE
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; CHECK-DAG: DBG_VALUE $rdi, $noreg, ![[S1]], !DIExpression(DW_OP_LLVM_fragment, 0, 64)
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; CHECK-DAG: DBG_VALUE $rsi, $noreg, ![[S1]], !DIExpression(DW_OP_LLVM_fragment, 64, 64)
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; CHECK-DAG: DBG_VALUE $rdx, $noreg, ![[S2]], !DIExpression(DW_OP_LLVM_fragment, 0, 64)
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; CHECK-DAG: DBG_VALUE $rcx, $noreg, ![[S2]], !DIExpression(DW_OP_LLVM_fragment, 64, 64)
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; CHECK-NOT: DBG_VALUE
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; Then arguments are copied to virtual registers.
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; CHECK-NOT: DBG_VALUE
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; CHECK-DAG: %[[R1:.*]]:gr64 = COPY $rcx
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; CHECK-DAG: DBG_VALUE %[[R1]], $noreg, ![[S2]], !DIExpression(DW_OP_LLVM_fragment, 64, 64)
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; CHECK-DAG: %[[R2:.*]]:gr64 = COPY $rdx
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; CHECK-DAG: DBG_VALUE %[[R2]], $noreg, ![[S2]], !DIExpression(DW_OP_LLVM_fragment, 0, 64)
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; CHECK-DAG: %[[R3:.*]]:gr64 = COPY $rsi
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; CHECK-DAG: DBG_VALUE %[[R3]], $noreg, ![[S1]], !DIExpression(DW_OP_LLVM_fragment, 64, 64)
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; CHECK-DAG: %[[R4:.*]]:gr64 = COPY $rdi
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; CHECK-DAG: DBG_VALUE %[[R4]], $noreg, ![[S1]], !DIExpression(DW_OP_LLVM_fragment, 0, 64)
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; CHECK-NOT: DBG_VALUE
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; We have the call to bar.
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; CHECK: ADJCALLSTACKDOWN
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; CHECK: CALL64pcrel32 @bar
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; After the call we expect to find new DBG_VALUE instructions for "s1".
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; CHECK: ADJCALLSTACKUP
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; CHECK-NOT: DBG_VALUE
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; CHECK-DAG: DBG_VALUE %[[R2]], $noreg, ![[S1]], !DIExpression(DW_OP_LLVM_fragment, 0, 64)
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; CHECK-DAG: DBG_VALUE %[[R1]], $noreg, ![[S1]], !DIExpression(DW_OP_LLVM_fragment, 64, 64)
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; And then no more DBG_VALUE instructions before the add.
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; CHECK-NOT: DBG_VALUE
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; CHECK: ADD32rr
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entry:
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%tmp.sroa.0 = alloca i64, align 8
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%tmp.sroa.4 = alloca i64, align 8
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call void @llvm.dbg.declare(metadata i64* %tmp.sroa.0, metadata !19, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64)), !dbg !21
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call void @llvm.dbg.declare(metadata i64* %tmp.sroa.4, metadata !19, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64)), !dbg !21
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call void @llvm.dbg.value(metadata i64 %s1.coerce0, metadata !17, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64)), !dbg !22
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call void @llvm.dbg.value(metadata i64 %s1.coerce1, metadata !17, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64)), !dbg !22
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call void @llvm.dbg.value(metadata i64 %s2.coerce0, metadata !18, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64)), !dbg !23
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call void @llvm.dbg.value(metadata i64 %s2.coerce1, metadata !18, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64)), !dbg !23
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%tmp.sroa.0.0..sroa_cast = bitcast i64* %tmp.sroa.0 to i8*, !dbg !24
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call void @llvm.lifetime.start.p0i8(i64 8, i8* nonnull %tmp.sroa.0.0..sroa_cast), !dbg !24
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%tmp.sroa.4.0..sroa_cast = bitcast i64* %tmp.sroa.4 to i8*, !dbg !24
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call void @llvm.lifetime.start.p0i8(i64 8, i8* nonnull %tmp.sroa.4.0..sroa_cast), !dbg !24
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store volatile i64 0, i64* %tmp.sroa.0, align 8, !dbg !21
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store volatile i64 0, i64* %tmp.sroa.4, align 8, !dbg !21
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tail call void @bar(i64 %s1.coerce0, i64 %s1.coerce1, i64 %s2.coerce0, i64 %s2.coerce1, i64 0, i64 0) #4, !dbg !25
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call void @llvm.dbg.value(metadata i64 %s2.coerce0, metadata !17, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64)), !dbg !22
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call void @llvm.dbg.value(metadata i64 %s2.coerce1, metadata !17, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64)), !dbg !22
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%s2.coerce1.tr = trunc i64 %s2.coerce1 to i32, !dbg !26
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%conv = shl i32 %s2.coerce1.tr, 1, !dbg !26
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call void @llvm.lifetime.end.p0i8(i64 8, i8* nonnull %tmp.sroa.0.0..sroa_cast), !dbg !27
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call void @llvm.lifetime.end.p0i8(i64 8, i8* nonnull %tmp.sroa.4.0..sroa_cast), !dbg !27
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ret i32 %conv, !dbg !28
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}
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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declare void @llvm.dbg.value(metadata, metadata, metadata) #1
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declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #2
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declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #2
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declare dso_local void @bar(i64, i64, i64, i64, i64, i64) local_unnamed_addr
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attributes #0 = { nounwind uwtable }
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attributes #1 = { nounwind readnone speculatable }
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attributes #2 = { argmemonly nounwind }
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attributes #4 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "llvm-svn @ 353529", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
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!1 = !DIFile(filename: "s.c", directory: "")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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!6 = !{!"llvm-svn @ 353529"}
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!7 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 5, type: !8, scopeLine: 5, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !16)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10, !11, !11}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "s", file: !1, line: 1, size: 128, elements: !12)
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!12 = !{!13, !15}
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!13 = !DIDerivedType(tag: DW_TAG_member, name: "i", scope: !11, file: !1, line: 1, baseType: !14, size: 64)
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!14 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed)
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!15 = !DIDerivedType(tag: DW_TAG_member, name: "j", scope: !11, file: !1, line: 1, baseType: !14, size: 64, offset: 64)
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!16 = !{!17, !18, !19}
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!17 = !DILocalVariable(name: "s1", arg: 1, scope: !7, file: !1, line: 5, type: !11)
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!18 = !DILocalVariable(name: "s2", arg: 2, scope: !7, file: !1, line: 5, type: !11)
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!19 = !DILocalVariable(name: "tmp", scope: !7, file: !1, line: 6, type: !20)
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!20 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !11)
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!21 = !DILocation(line: 6, column: 21, scope: !7)
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!22 = !DILocation(line: 5, column: 16, scope: !7)
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!23 = !DILocation(line: 5, column: 29, scope: !7)
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!24 = !DILocation(line: 6, column: 3, scope: !7)
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!25 = !DILocation(line: 7, column: 3, scope: !7)
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!26 = !DILocation(line: 10, column: 10, scope: !7)
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!27 = !DILocation(line: 11, column: 1, scope: !7)
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!28 = !DILocation(line: 10, column: 3, scope: !7)
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