| # RUN: llc -mtriple=armv4t-unknown-unknown -start-after=livedebugvalues -filetype=obj -o - %s | llvm-dwarfdump - | FileCheck %s |
| |
| # This reproducer is based on the following C code: |
| # |
| # struct S0 { int f1; int f2; int f3; }; |
| # |
| # int a; |
| # |
| # void fn1(struct S0 p1) { |
| # a = p1.f1 >= fn2(p1.f2); |
| # } |
| # |
| # and was generated using the following commands: |
| # $ clang -O1 -g --target=armv4t -S -emit-llvm |
| # $ llc -O1 -stop-after=livedebugvalues |
| |
| --- | |
| target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64" |
| target triple = "armv4t-unknown-unknown" |
| |
| ; Function Attrs: nounwind |
| define arm_aapcscc i32 @fn1([3 x i32] %p1.coerce) !dbg !7 { |
| entry: |
| %p1.coerce.fca.0.extract = extractvalue [3 x i32] %p1.coerce, 0 |
| call void @llvm.dbg.value(metadata i32 %p1.coerce.fca.0.extract, metadata !17, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), !dbg !18 |
| %p1.coerce.fca.1.extract = extractvalue [3 x i32] %p1.coerce, 1 |
| call void @llvm.dbg.value(metadata i32 %p1.coerce.fca.1.extract, metadata !17, metadata !DIExpression(DW_OP_LLVM_fragment, 32, 32)), !dbg !18 |
| call void @llvm.dbg.value(metadata i32 undef, metadata !17, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 32)), !dbg !18 |
| %call = tail call arm_aapcscc i32 bitcast (i32 (...)* @fn2 to i32 (i32)*)(i32 %p1.coerce.fca.1.extract), !dbg !19 |
| %cmp = icmp sge i32 %p1.coerce.fca.0.extract, %call, !dbg !19 |
| %conv = zext i1 %cmp to i32, !dbg !19 |
| ret i32 %conv, !dbg !19 |
| } |
| |
| declare arm_aapcscc i32 @fn2(...) |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #0 |
| |
| attributes #0 = { nounwind readnone speculatable } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 9.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None) |
| !1 = !DIFile(filename: "test.c", directory: "/") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"min_enum_size", i32 4} |
| !6 = !{!"clang version 9.0.0"} |
| !7 = distinct !DISubprogram(name: "fn1", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !16) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{!10, !11} |
| !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S0", file: !1, line: 1, size: 96, elements: !12) |
| !12 = !{!13, !14, !15} |
| !13 = !DIDerivedType(tag: DW_TAG_member, name: "f1", scope: !11, file: !1, line: 1, baseType: !10, size: 32) |
| !14 = !DIDerivedType(tag: DW_TAG_member, name: "f2", scope: !11, file: !1, line: 1, baseType: !10, size: 32, offset: 32) |
| !15 = !DIDerivedType(tag: DW_TAG_member, name: "f3", scope: !11, file: !1, line: 1, baseType: !10, size: 32, offset: 64) |
| !16 = !{!17} |
| !17 = !DILocalVariable(name: "p1", arg: 1, scope: !7, file: !1, line: 3, type: !11) |
| !18 = !DILocation(line: 3, scope: !7) |
| !19 = !DILocation(line: 4, scope: !7) |
| |
| ... |
| --- |
| name: fn1 |
| tracksRegLiveness: true |
| body: | |
| bb.0.entry: |
| liveins: $r0, $r1, $r4, $lr |
| |
| $sp = frame-setup STMDB_UPD $sp, 14, $noreg, killed $r4, killed $lr |
| $r4 = MOVr $r0, 14, $noreg, $noreg |
| DBG_VALUE $r1, $noreg, !17, !DIExpression(DW_OP_LLVM_fragment, 32, 32), debug-location !18 |
| DBG_VALUE $noreg, $noreg, !17, !DIExpression(DW_OP_LLVM_fragment, 64, 32), debug-location !18 |
| DBG_VALUE $r4, $noreg, !17, !DIExpression(DW_OP_LLVM_fragment, 0, 32), debug-location !18 |
| $r0 = MOVr killed $r1, 14, $noreg, $noreg, debug-location !19 |
| BL @fn2, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit $r0, implicit-def $sp, implicit-def $r0, debug-location !19 |
| renamable $r1 = MOVi 0, 14, $noreg, $noreg |
| CMPrr killed renamable $r4, killed renamable $r0, 14, $noreg, implicit-def $cpsr, debug-location !19 |
| $r1 = MOVi 1, 10, killed $cpsr, $noreg, implicit killed renamable $r1, debug-location !19 |
| $r0 = MOVr killed $r1, 14, $noreg, $noreg, debug-location !19 |
| $sp = LDMIA_UPD $sp, 14, $noreg, def $r4, def $lr, debug-location !19 |
| BX_RET 14, $noreg, implicit $r0, debug-location !19 |
| |
| ... |
| |
| # Verify that the addresses in the location list for the parameter are |
| # monotonically increasing, and that the undef debug value fragment does not |
| # terminate the non-overlapping fragment that is described by $r1. |
| |
| # CHECK: DW_AT_location (0x00000000 |
| # CHECK-NEXT: [0x00000008, 0x00000010): DW_OP_reg4 R4, DW_OP_piece 0x4, DW_OP_reg1 R1, DW_OP_piece 0x4 |
| # CHECK-NEXT: [0x00000010, 0x00000024): DW_OP_reg4 R4, DW_OP_piece 0x4) |
| # CHECK-NEXT: DW_AT_name ("p1") |