76 lines
2.8 KiB
LLVM
76 lines
2.8 KiB
LLVM
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; RUN: opt -S -licm %s | FileCheck %s
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;
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; LICM should null out debug locations when it hoists instructions out of a loop.
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;
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; Generated with
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; clang -O0 -S -emit-llvm test.cpp -g -gline-tables-only -o t.ll
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; opt -S -sroa -adce -simplifycfg -reassociate -domtree -loops \
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; -loop-simplify -lcssa -basic-aa -aa -scalar-evolution -loop-rotate t.ll > test.ll
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;
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; void bar(int *);
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; void foo(int k, int p)
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; {
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; for (int i = 0; i < k; i++) {
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; bar(&p + 4);
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; }
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; }
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;
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; We make sure that the instruction that is hoisted into the preheader
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; does not have a debug location.
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; CHECK: for.body.lr.ph:
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; CHECK: getelementptr{{.*}}%p.addr, i64 4{{$}}
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; CHECK: for.body:
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;
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; ModuleID = 't.ll'
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source_filename = "test.c"
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; Function Attrs: nounwind sspstrong uwtable
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define void @foo(i32 %k, i32 %p) !dbg !7 {
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entry:
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%p.addr = alloca i32, align 4
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store i32 %p, i32* %p.addr, align 4
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%cmp2 = icmp slt i32 0, %k, !dbg !9
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br i1 %cmp2, label %for.body.lr.ph, label %for.end, !dbg !9
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for.body.lr.ph: ; preds = %entry
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br label %for.body, !dbg !9
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for.body: ; preds = %for.body.lr.ph, %for.body
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%i.03 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
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%add.ptr = getelementptr inbounds i32, i32* %p.addr, i64 4, !dbg !11
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call void @bar(i32* %add.ptr), !dbg !11
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%inc = add nsw i32 %i.03, 1, !dbg !12
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%cmp = icmp slt i32 %inc, %k, !dbg !9
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br i1 %cmp, label %for.body, label %for.cond.for.end_crit_edge, !dbg !9, !llvm.loop !14
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for.cond.for.end_crit_edge: ; preds = %for.body
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br label %for.end, !dbg !9
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for.end: ; preds = %for.cond.for.end_crit_edge, %entry
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ret void, !dbg !16
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}
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declare void @bar(i32*)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.1 (PS4 clang version 4.50.0.249 7e7cd823 checking)", isOptimized: false, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2)
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!1 = !DIFile(filename: "test.c", directory: "D:\test")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"PIC Level", i32 2}
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!6 = !{!"clang version 3.9.1 (PS4 clang version 4.50.0.249 7e7cd823 checking)"}
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!7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
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!8 = !DISubroutineType(types: !2)
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!9 = !DILocation(line: 4, scope: !10)
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!10 = !DILexicalBlockFile(scope: !7, file: !1, discriminator: 1)
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!11 = !DILocation(line: 5, scope: !7)
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!12 = !DILocation(line: 4, scope: !13)
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!13 = !DILexicalBlockFile(scope: !7, file: !1, discriminator: 2)
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!14 = distinct !{!14, !15}
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!15 = !DILocation(line: 4, scope: !7)
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!16 = !DILocation(line: 7, scope: !7)
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