1 ; RUN: opt -S -loop-reduce %s | FileCheck %s
2 ; RUN: opt --try-experimental-debuginfo-iterators -S -loop-reduce %s | FileCheck %s
4 ; Test that LSR SCEV-based salvaging does not crash when translating SCEVs
5 ; that contain integers with binary representations greater than 64-bits.
6 ; Also show that no salvaging attempt is made for dbg.value that are undef
9 ; CHECK: #dbg_value(i64 undef, !{{[0-9]+}}, !DIExpression(DW_OP_plus_uconst, 228, DW_OP_stack_value),
10 ; CHECK: #dbg_value(i64 %var2, !{{[0-9]+}}, !DIExpression(DW_OP_plus_uconst, 228, DW_OP_stack_value),
13 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
14 target triple = "x86_64-unknown-linux-gnu"
16 ; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
17 declare void @llvm.dbg.value(metadata, metadata, metadata)
19 ; Function Attrs: nounwind
20 define hidden void @reproducer() local_unnamed_addr !dbg !5 {
22 %0 = lshr i128 undef, 64
23 %var1 = trunc i128 %0 to i64
24 %1 = add nuw i64 undef, %var1
25 %var2 = lshr i64 %1, 12
28 Label_d0: ; preds = %Label_d0, %init
29 %var3 = phi i64 [ %var2, %init ], [ %var4, %Label_d0 ]
30 call void @llvm.dbg.value(metadata i64 undef, metadata !11, metadata !DIExpression(DW_OP_plus_uconst, 228, DW_OP_stack_value)), !dbg !12
31 call void @llvm.dbg.value(metadata i64 %var2, metadata !11, metadata !DIExpression(DW_OP_plus_uconst, 228, DW_OP_stack_value)), !dbg !12
32 %var4 = add i64 %var3, -1
33 %var5 = icmp eq i64 %var4, 0
34 br i1 %var5, label %Label_1bc, label %Label_d0
36 Label_1bc: ; preds = %Label_d0
41 !llvm.module.flags = !{!3, !4}
43 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "frontend", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
44 !1 = !DIFile(filename: "source", directory: "")
46 !3 = !{i32 2, !"Debug Info Version", i32 3}
47 !4 = !{i32 1, !"wchar_size", i32 4}
48 !5 = distinct !DISubprogram(name: "reproducer", scope: !1, file: !1, line: 904320, type: !6, scopeLine: 904320, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !10)
49 !6 = !DISubroutineType(types: !7)
50 !7 = !{null, !8, !9, !9, !9, !9, !9, !9}
51 !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
52 !9 = !DIBasicType(name: "my_type", size: 64, encoding: DW_ATE_unsigned)
54 !11 = !DILocalVariable(name: "my_var", arg: 1, scope: !5, file: !1, line: 904320, type: !8)
55 !12 = !DILocation(line: 904544, scope: !5)