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annotate test/Transforms/AddDiscriminators/no-discriminators.ll @ 100:7d135dc70f03 LLVM 3.9

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LLVM 3.9
author Miyagi Mitsuki <e135756@ie.u-ryukyu.ac.jp>
date Tue, 26 Jan 2016 22:53:40 +0900
parents afa8332a0e37
children 1172e4bd9c6f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 ; RUN: opt < %s -add-discriminators -S | FileCheck %s
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2
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3 ; We should not generate discriminators for DWARF versions prior to 4.
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4 ;
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5 ; Original code:
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6 ;
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7 ; int foo(long i) {
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8 ; if (i < 5) return 2; else return 90;
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9 ; }
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10 ;
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11 ; None of the !dbg nodes associated with the if() statement should be
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12 ; altered. If they are, it means that the discriminators pass added a
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13 ; new lexical scope.
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14
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15 define i32 @foo(i64 %i) #0 !dbg !4 {
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16 entry:
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17 %retval = alloca i32, align 4
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18 %i.addr = alloca i64, align 8
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19 store i64 %i, i64* %i.addr, align 8
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20 call void @llvm.dbg.declare(metadata i64* %i.addr, metadata !13, metadata !DIExpression()), !dbg !14
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21 %0 = load i64, i64* %i.addr, align 8, !dbg !15
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22 ; CHECK: %0 = load i64, i64* %i.addr, align 8, !dbg ![[ENTRY:[0-9]+]]
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23 %cmp = icmp slt i64 %0, 5, !dbg !15
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24 ; CHECK: %cmp = icmp slt i64 %0, 5, !dbg ![[ENTRY:[0-9]+]]
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25 br i1 %cmp, label %if.then, label %if.else, !dbg !15
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26 ; CHECK: br i1 %cmp, label %if.then, label %if.else, !dbg ![[ENTRY:[0-9]+]]
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27
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28 if.then: ; preds = %entry
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29 store i32 2, i32* %retval, !dbg !15
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30 br label %return, !dbg !15
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31
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32 if.else: ; preds = %entry
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33 store i32 90, i32* %retval, !dbg !15
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34 br label %return, !dbg !15
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35
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36 return: ; preds = %if.else, %if.then
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37 %1 = load i32, i32* %retval, !dbg !17
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38 ret i32 %1, !dbg !17
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39 }
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41 ; Function Attrs: nounwind readnone
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42 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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43
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44 attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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45 attributes #1 = { nounwind readnone }
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46
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47 ; We should be able to add discriminators even in the absence of llvm.dbg.cu.
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48 ; When using sample profiles, the front end will generate line tables but it
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49 ; does not generate llvm.dbg.cu to prevent codegen from emitting debug info
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50 ; to the final binary.
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51 !llvm.dbg.cu = !{!0}
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52 !llvm.module.flags = !{!10, !11}
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53 !llvm.ident = !{!12}
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54
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55 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
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56 !1 = !DIFile(filename: "no-discriminators", directory: ".")
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57 !2 = !{}
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58 !3 = !{!4}
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59 !4 = distinct !DISubprogram(name: "foo", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !1, scope: !5, type: !6, variables: !2)
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60 ; CHECK: ![[FOO:[0-9]+]] = distinct !DISubprogram(name: "foo"
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61 !5 = !DIFile(filename: "no-discriminators", directory: ".")
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62 !6 = !DISubroutineType(types: !7)
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63 !7 = !{!8, !9}
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64 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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65 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "long int", size: 64, align: 64, encoding: DW_ATE_signed)
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66 !10 = !{i32 2, !"Dwarf Version", i32 2}
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67 ; CHECK: !{i32 2, !"Dwarf Version", i32 2}
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68 !11 = !{i32 1, !"Debug Info Version", i32 3}
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69 !12 = !{!"clang version 3.5.0 "}
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70 !13 = !DILocalVariable(name: "i", line: 1, arg: 1, scope: !4, file: !5, type: !9)
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71 !14 = !DILocation(line: 1, scope: !4)
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72 !15 = !DILocation(line: 2, scope: !16)
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73 ; CHECK: ![[ENTRY]] = !DILocation(line: 2, scope: ![[BLOCK:[0-9]+]])
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74 !16 = distinct !DILexicalBlock(line: 2, column: 0, file: !1, scope: !4)
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75 ; CHECK: ![[BLOCK]] = distinct !DILexicalBlock(scope: ![[FOO]],{{.*}} line: 2)
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76 !17 = !DILocation(line: 3, scope: !4)