| ; RUN: llc -mtriple=x86_64-unknown-linux-gnu -start-after=codegenprepare -stop-before=finalize-isel -o - %s -experimental-debug-variable-locations=false | FileCheck %s --check-prefixes=CHECK,COMMON |
| ; RUN: llc -mtriple=x86_64-unknown-linux-gnu -start-after=codegenprepare -stop-before=finalize-isel -o - %s -experimental-debug-variable-locations=true | FileCheck %s --check-prefixes=INSTRREF,COMMON |
| |
| ; Test case was generated from the following C code, |
| ; using: clang -g -O1 -S -emit-llvm s.c -o s.ll |
| ; |
| ; struct s { long long int i, j; }; |
| ; |
| ; extern void bar(struct s, struct s, struct s); |
| ; |
| ; int f(struct s s1, struct s s2) { |
| ; volatile struct s tmp = {0}; |
| ; bar(s1, s2, tmp); |
| ; s1.i = s2.i; |
| ; s1.j = s2.j; |
| ; return s1.j + s1.j; |
| ; } |
| |
| ; Catch metadata references for involved variables. |
| ; |
| ; COMMON-DAG: ![[S1:.*]] = !DILocalVariable(name: "s1" |
| ; COMMON-DAG: ![[S2:.*]] = !DILocalVariable(name: "s2" |
| |
| define dso_local i32 @f(i64 %s1.coerce0, i64 %s1.coerce1, i64 %s2.coerce0, i64 %s2.coerce1) local_unnamed_addr #0 !dbg !7 { |
| ; We expect DBG_VALUE instructions for the arguments at the entry. |
| ; In instr-ref mode, there'll be some DBG_PHIs in there too. |
| ; COMMON-LABEL: name: f |
| ; COMMON-NOT: DBG_VALUE |
| ; INSTRREF-DAG: DBG_PHI $rcx, 2 |
| ; INSTRREF-DAG: DBG_PHI $rdx, 1 |
| ; COMMON-DAG: DBG_VALUE $rdi, $noreg, ![[S1]], !DIExpression(DW_OP_LLVM_fragment, 0, 64) |
| ; COMMON-DAG: DBG_VALUE $rsi, $noreg, ![[S1]], !DIExpression(DW_OP_LLVM_fragment, 64, 64) |
| ; COMMON-DAG: DBG_VALUE $rdx, $noreg, ![[S2]], !DIExpression(DW_OP_LLVM_fragment, 0, 64) |
| ; COMMON-DAG: DBG_VALUE $rcx, $noreg, ![[S2]], !DIExpression(DW_OP_LLVM_fragment, 64, 64) |
| ; COMMON-NOT: DBG_ |
| |
| ; Then arguments are copied to virtual registers. |
| ; CHECK-NOT: DBG_VALUE |
| ; CHECK-DAG: %[[R1:.*]]:gr64 = COPY $rcx |
| ; CHECK-DAG: DBG_VALUE %[[R1]], $noreg, ![[S2]], !DIExpression(DW_OP_LLVM_fragment, 64, 64) |
| ; CHECK-DAG: %[[R2:.*]]:gr64 = COPY $rdx |
| ; CHECK-DAG: DBG_VALUE %[[R2]], $noreg, ![[S2]], !DIExpression(DW_OP_LLVM_fragment, 0, 64) |
| ; CHECK-DAG: %[[R3:.*]]:gr64 = COPY $rsi |
| ; CHECK-DAG: DBG_VALUE %[[R3]], $noreg, ![[S1]], !DIExpression(DW_OP_LLVM_fragment, 64, 64) |
| ; CHECK-DAG: %[[R4:.*]]:gr64 = COPY $rdi |
| ; CHECK-DAG: DBG_VALUE %[[R4]], $noreg, ![[S1]], !DIExpression(DW_OP_LLVM_fragment, 0, 64) |
| ; CHECK-NOT: DBG_VALUE |
| |
| ; We have the call to bar. |
| ; COMMON: ADJCALLSTACKDOWN |
| ; COMMON: CALL64pcrel32 @bar |
| |
| ; After the call we expect to find new DBG_VALUE instructions for "s1". |
| ; CHECK: ADJCALLSTACKUP |
| ; CHECK-NOT: DBG_VALUE |
| ; CHECK-DAG: DBG_VALUE %[[R2]], $noreg, ![[S1]], !DIExpression(DW_OP_LLVM_fragment, 0, 64) |
| ; CHECK-DAG: DBG_VALUE %[[R1]], $noreg, ![[S1]], !DIExpression(DW_OP_LLVM_fragment, 64, 64) |
| |
| ;; In instruction referencing mode, we should refer to the instruction number |
| ;; of the earlier DBG_PHIs. |
| ; INSTRREF: ADJCALLSTACKUP |
| ; INSTRREF-NOT: DBG_ |
| ; INSTRREF-DAG: DBG_INSTR_REF ![[S1]], !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 0, 64), dbg-instr-ref(1, 0)
|
| ; INSTRREF-DAG: DBG_INSTR_REF ![[S1]], !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 64, 64), dbg-instr-ref(2, 0)
|
| |
| ; And then no more DBG_ instructions before the add. |
| ; COMMON-NOT: DBG_ |
| ; COMMON: ADD32rr |
| |
| entry: |
| %tmp.sroa.0 = alloca i64, align 8 |
| %tmp.sroa.4 = alloca i64, align 8 |
| call void @llvm.dbg.declare(metadata ptr %tmp.sroa.0, metadata !19, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64)), !dbg !21 |
| call void @llvm.dbg.declare(metadata ptr %tmp.sroa.4, metadata !19, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64)), !dbg !21 |
| call void @llvm.dbg.value(metadata i64 %s1.coerce0, metadata !17, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64)), !dbg !22 |
| call void @llvm.dbg.value(metadata i64 %s1.coerce1, metadata !17, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64)), !dbg !22 |
| call void @llvm.dbg.value(metadata i64 %s2.coerce0, metadata !18, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64)), !dbg !23 |
| call void @llvm.dbg.value(metadata i64 %s2.coerce1, metadata !18, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64)), !dbg !23 |
| call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %tmp.sroa.0), !dbg !24 |
| call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %tmp.sroa.4), !dbg !24 |
| store volatile i64 0, ptr %tmp.sroa.0, align 8, !dbg !21 |
| store volatile i64 0, ptr %tmp.sroa.4, align 8, !dbg !21 |
| tail call void @bar(i64 %s1.coerce0, i64 %s1.coerce1, i64 %s2.coerce0, i64 %s2.coerce1, i64 0, i64 0) #4, !dbg !25 |
| call void @llvm.dbg.value(metadata i64 %s2.coerce0, metadata !17, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64)), !dbg !22 |
| call void @llvm.dbg.value(metadata i64 %s2.coerce1, metadata !17, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64)), !dbg !22 |
| %s2.coerce1.tr = trunc i64 %s2.coerce1 to i32, !dbg !26 |
| %conv = shl i32 %s2.coerce1.tr, 1, !dbg !26 |
| call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %tmp.sroa.0), !dbg !27 |
| call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %tmp.sroa.4), !dbg !27 |
| ret i32 %conv, !dbg !28 |
| } |
| |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #1 |
| declare void @llvm.lifetime.start.p0(i64, ptr nocapture) #2 |
| declare void @llvm.lifetime.end.p0(i64, ptr nocapture) #2 |
| |
| declare dso_local void @bar(i64, i64, i64, i64, i64, i64) local_unnamed_addr |
| |
| attributes #0 = { nounwind uwtable } |
| attributes #1 = { nounwind readnone speculatable } |
| attributes #2 = { argmemonly nounwind } |
| attributes #4 = { nounwind } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "llvm-svn @ 353529", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None) |
| !1 = !DIFile(filename: "s.c", directory: "") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"wchar_size", i32 4} |
| !6 = !{!"llvm-svn @ 353529"} |
| !7 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 5, type: !8, scopeLine: 5, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !16) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{!10, !11, !11} |
| !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "s", file: !1, line: 1, size: 128, elements: !12) |
| !12 = !{!13, !15} |
| !13 = !DIDerivedType(tag: DW_TAG_member, name: "i", scope: !11, file: !1, line: 1, baseType: !14, size: 64) |
| !14 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed) |
| !15 = !DIDerivedType(tag: DW_TAG_member, name: "j", scope: !11, file: !1, line: 1, baseType: !14, size: 64, offset: 64) |
| !16 = !{!17, !18, !19} |
| !17 = !DILocalVariable(name: "s1", arg: 1, scope: !7, file: !1, line: 5, type: !11) |
| !18 = !DILocalVariable(name: "s2", arg: 2, scope: !7, file: !1, line: 5, type: !11) |
| !19 = !DILocalVariable(name: "tmp", scope: !7, file: !1, line: 6, type: !20) |
| !20 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !11) |
| !21 = !DILocation(line: 6, column: 21, scope: !7) |
| !22 = !DILocation(line: 5, column: 16, scope: !7) |
| !23 = !DILocation(line: 5, column: 29, scope: !7) |
| !24 = !DILocation(line: 6, column: 3, scope: !7) |
| !25 = !DILocation(line: 7, column: 3, scope: !7) |
| !26 = !DILocation(line: 10, column: 10, scope: !7) |
| !27 = !DILocation(line: 11, column: 1, scope: !7) |
| !28 = !DILocation(line: 10, column: 3, scope: !7) |