| ; RUN: llc -mtriple thumbv7 -print-before=post-RA-sched -print-after=post-RA-sched %s -o /dev/null 2>&1 | FileCheck %s |
| |
| ; ModuleID = '<stdin>' |
| target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64" |
| target triple = "thumbv7" |
| |
| %struct.s = type opaque |
| |
| ; Function Attrs: nounwind |
| define arm_aapcscc i32 @f(%struct.s* %s, i32 %u, i8* %b, i32 %n) #0 { |
| entry: |
| tail call void @llvm.dbg.value(metadata %struct.s* %s, i64 0, metadata !19, metadata !28), !dbg !29 |
| tail call void @llvm.dbg.value(metadata i32 %u, i64 0, metadata !20, metadata !28), !dbg !29 |
| tail call void @llvm.dbg.value(metadata i8* %b, i64 0, metadata !21, metadata !28), !dbg !29 |
| tail call void @llvm.dbg.value(metadata i32 %n, i64 0, metadata !22, metadata !28), !dbg !29 |
| %cmp = icmp ult i32 %n, 4, !dbg !30 |
| br i1 %cmp, label %return, label %if.end, !dbg !32 |
| |
| if.end: ; preds = %entry |
| tail call arm_aapcscc void @g(%struct.s* %s, i8* %b, i32 %n) #3, !dbg !33 |
| br label %return, !dbg !34 |
| |
| return: ; preds = %entry, %if.end |
| %retval.0 = phi i32 [ 0, %if.end ], [ -1, %entry ] |
| ret i32 %retval.0, !dbg !35 |
| } |
| |
| ; NOTE: This is checking that the register in the DEBUG_VALUE node is not |
| ; accidentally being marked as KILL. The DBG_VALUE node gets introduced in |
| ; If-Conversion, and gets bundled into the IT block. The Post RA Scheduler |
| ; attempts to schedule the Machine Instr, and tries to tag the register in the |
| ; debug value as KILL'ed, resulting in a DEBUG_VALUE node changing codegen! (or |
| ; hopefully, triggering an assert). |
| |
| ; CHECK: BUNDLE %ITSTATE<imp-def,dead> |
| ; CHECK: * DBG_VALUE %R1, %noreg, !"u" |
| ; CHECK-NOT: * DBG_VALUE %R1<kill>, %noreg, !"u" |
| |
| declare arm_aapcscc void @g(%struct.s*, i8*, i32) #1 |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2 |
| |
| attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #2 = { nounwind readnone } |
| attributes #3 = { nounwind } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!23, !24, !25, !26} |
| !llvm.ident = !{!27} |
| |
| !0 = !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (llvm/trunk 237059)", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2) |
| !1 = !DIFile(filename: "<stdin>", directory: "/Users/compnerd/Source/llvm") |
| !2 = !{} |
| !3 = !{!4} |
| !4 = !DISubprogram(name: "f", scope: !5, file: !5, line: 9, type: !6, isLocal: false, isDefinition: true, scopeLine: 9, flags: DIFlagPrototyped, isOptimized: true, function: i32 (%struct.s*, i32, i8*, i32)* @f, variables: !18) |
| !5 = !DIFile(filename: "<stdin>", directory: "/Users/compnerd/Source/llvm") |
| !6 = !DISubroutineType(types: !7) |
| !7 = !{!8, !9, !12, !13, !17} |
| !8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 32, align: 32) |
| !10 = !DIDerivedType(tag: DW_TAG_typedef, name: "s", file: !5, line: 5, baseType: !11) |
| !11 = !DICompositeType(tag: DW_TAG_structure_type, name: "s", file: !5, line: 5, flags: DIFlagFwdDecl) |
| !12 = !DIBasicType(name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned) |
| !13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !14, size: 32, align: 32) |
| !14 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !15) |
| !15 = !DIDerivedType(tag: DW_TAG_typedef, name: "uint8_t", file: !5, line: 2, baseType: !16) |
| !16 = !DIBasicType(name: "unsigned char", size: 8, align: 8, encoding: DW_ATE_unsigned_char) |
| !17 = !DIDerivedType(tag: DW_TAG_typedef, name: "size_t", file: !5, line: 3, baseType: !12) |
| !18 = !{!19, !20, !21, !22} |
| !19 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "s", arg: 1, scope: !4, file: !5, line: 9, type: !9) |
| !20 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "u", arg: 2, scope: !4, file: !5, line: 9, type: !12) |
| !21 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "b", arg: 3, scope: !4, file: !5, line: 9, type: !13) |
| !22 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "n", arg: 4, scope: !4, file: !5, line: 9, type: !17) |
| !23 = !{i32 2, !"Dwarf Version", i32 4} |
| !24 = !{i32 2, !"Debug Info Version", i32 3} |
| !25 = !{i32 1, !"wchar_size", i32 4} |
| !26 = !{i32 1, !"min_enum_size", i32 4} |
| !27 = !{!"clang version 3.7.0 (llvm/trunk 237059)"} |
| !28 = !DIExpression() |
| !29 = !DILocation(line: 9, scope: !4) |
| !30 = !DILocation(line: 10, scope: !31) |
| !31 = distinct !DILexicalBlock(scope: !4, file: !5, line: 10) |
| !32 = !DILocation(line: 10, scope: !4) |
| !33 = !DILocation(line: 13, scope: !4) |
| !34 = !DILocation(line: 14, scope: !4) |
| !35 = !DILocation(line: 15, scope: !4) |