1; Check that compiler doesn't crash when calculateSpillWeightsAndHints is called with dbg instrs present 2; REQUIRES: asserts 3; REQUIRES: x86_64-linux 4; RUN: llc -O1 -regalloc=pbqp < %s | FileCheck %s 5; RUN: llc --try-experimental-debuginfo-iterators -O1 -regalloc=pbqp < %s | FileCheck %s 6 7target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 8target triple = "x86_64-unknown-linux-gnu" 9 10; CHECK-LABEL: test: 11define dso_local void @test(ptr %a) local_unnamed_addr #0 !dbg !7 { 12entry: 13 ; CHECK: DEBUG_VALUE: i <- 0 14 call void @llvm.dbg.value(metadata ptr %a, metadata !14, metadata !DIExpression()), !dbg !17 15 call void @llvm.dbg.value(metadata i32 0, metadata !15, metadata !DIExpression()), !dbg !17 16 br label %for.cond, !dbg !17 17 18for.cond: ; preds = %for.body, %entry 19 %a.addr.0 = phi ptr [ %a, %entry ], [ %incdec.ptr, %for.body ] 20 %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ], !dbg !17 21 call void @llvm.dbg.value(metadata i32 %i.0, metadata !15, metadata !DIExpression()), !dbg !17 22 call void @llvm.dbg.value(metadata ptr %a.addr.0, metadata !14, metadata !DIExpression()), !dbg !17 23 %cmp = icmp slt i32 %i.0, 32, !dbg !17 24 br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !17 25 26for.cond.cleanup: ; preds = %for.cond 27 ret void, !dbg !17 28 29for.body: ; preds = %for.cond 30 %incdec.ptr = getelementptr inbounds i32, ptr %a.addr.0, i32 1, !dbg !17 31 call void @llvm.dbg.value(metadata ptr %incdec.ptr, metadata !14, metadata !DIExpression()), !dbg !17 32 store i32 42, ptr %a.addr.0, align 4, !dbg !17 33 %inc = add nsw i32 %i.0, 1, !dbg !17 34 call void @llvm.dbg.value(metadata i32 %inc, metadata !15, metadata !DIExpression()), !dbg !17 35 br label %for.cond, !dbg !17 36} 37 38; Function Attrs: nounwind readnone speculatable willreturn 39declare void @llvm.dbg.value(metadata, metadata, metadata) #1 40 41attributes #0 = { nounwind uwtable optnone noinline } 42attributes #1 = { nounwind readnone speculatable willreturn } 43 44!llvm.dbg.cu = !{!0} 45!llvm.module.flags = !{!3, !4, !5} 46!llvm.ident = !{!6} 47 48!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 11.0.0 (https://github.com/llvm/llvm-project.git afaeb817468d2fdc0a315a7ff136db245e59a8eb)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None) 49!1 = !DIFile(filename: "csw-debug-assert.c", directory: "dir") 50!2 = !{} 51!3 = !{i32 7, !"Dwarf Version", i32 4} 52!4 = !{i32 2, !"Debug Info Version", i32 3} 53!5 = !{i32 1, !"wchar_size", i32 4} 54!6 = !{!"clang version 11.0.0 (https://github.com/llvm/llvm-project.git afaeb817468d2fdc0a315a7ff136db245e59a8eb)"} 55!7 = distinct !DISubprogram(name: "test", scope: !8, file: !8, line: 5, type: !9, scopeLine: 5, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !13) 56!8 = !DIFile(filename: "csw-debug-assert.c", directory: "dir") 57!9 = !DISubroutineType(types: !10) 58!10 = !{null, !11} 59!11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64) 60!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 61!13 = !{!14, !15} 62!14 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !8, line: 5, type: !11) 63!15 = !DILocalVariable(name: "i", scope: !16, file: !8, line: 6, type: !12) 64!16 = distinct !DILexicalBlock(scope: !7, file: !8, line: 6, column: 5) 65!17 = !DILocation(line: 0, scope: !7) 66