mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-14 11:32:34 +00:00
ee8af3e2a0
This was reverted in r208642 due to regressions surrounding file changes within lexical scopes causing inlining information to be lost. The issue was in LexicalScopes::getOrCreateInlinedScope, where I was previously testing "isLexicalBlock" which is false for "DILexicalBlockFile" (a scope used to represent changes in the current file name) and assuming it was then a function (breaking out of the inlined scope path and reaching for the parent non-inlined scopes). By inverting the condition and testing for "isSubprogram" the correct behavior is attained. (also found some weirdness in Clang, see r208742 when reducing this test case - the resulting test case doesn't apply with the Clang fix, but I've added a more realistic test case to inline-scopes.ll which does reproduce the issue and demonstrate the fix) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208748 91177308-0d34-0410-b5e6-96231b3b80d8
128 lines
6.8 KiB
LLVM
128 lines
6.8 KiB
LLVM
; REQUIRES: object-emission
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; RUN: %llc_dwarf -O0 -filetype=obj < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
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; bool f();
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; inline __attribute__((always_inline)) int f1() {
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; if (bool b = f())
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; return 1;
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; return 2;
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; }
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;
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; inline __attribute__((always_inline)) int f2() {
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; # 2 "y.cc"
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; if (bool b = f())
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; return 3;
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; return 4;
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; }
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;
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; int main() {
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; f1();
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; f2();
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; }
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; Ensure that lexical_blocks within inlined_subroutines are preserved/emitted.
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; CHECK: DW_TAG_inlined_subroutine
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; CHECK-NOT: DW_TAG
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_lexical_block
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; CHECK-NOT: DW_TAG
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_variable
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; Ensure that file changes don't interfere with creating inlined subroutines.
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; (see the line directive inside 'f2' in thesource)
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; CHECK: DW_TAG_inlined_subroutine
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; Function Attrs: uwtable
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define i32 @main() #0 {
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entry:
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%retval.i2 = alloca i32, align 4
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%b.i3 = alloca i8, align 1
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%retval.i = alloca i32, align 4
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%b.i = alloca i8, align 1
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call void @llvm.dbg.declare(metadata !{i8* %b.i}, metadata !16), !dbg !19
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%call.i = call zeroext i1 @_Z1fv(), !dbg !19
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%frombool.i = zext i1 %call.i to i8, !dbg !19
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store i8 %frombool.i, i8* %b.i, align 1, !dbg !19
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%0 = load i8* %b.i, align 1, !dbg !19
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%tobool.i = trunc i8 %0 to i1, !dbg !19
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br i1 %tobool.i, label %if.then.i, label %if.end.i, !dbg !19
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if.then.i: ; preds = %entry
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store i32 1, i32* %retval.i, !dbg !21
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br label %_Z2f1v.exit, !dbg !21
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if.end.i: ; preds = %entry
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store i32 2, i32* %retval.i, !dbg !22
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br label %_Z2f1v.exit, !dbg !22
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_Z2f1v.exit: ; preds = %if.then.i, %if.end.i
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%1 = load i32* %retval.i, !dbg !23
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call void @llvm.dbg.declare(metadata !{i8* %b.i3}, metadata !24), !dbg !27
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%call.i4 = call zeroext i1 @_Z1fv(), !dbg !27
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%frombool.i5 = zext i1 %call.i4 to i8, !dbg !27
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store i8 %frombool.i5, i8* %b.i3, align 1, !dbg !27
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%2 = load i8* %b.i3, align 1, !dbg !27
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%tobool.i6 = trunc i8 %2 to i1, !dbg !27
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br i1 %tobool.i6, label %if.then.i7, label %if.end.i8, !dbg !27
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if.then.i7: ; preds = %_Z2f1v.exit
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store i32 3, i32* %retval.i2, !dbg !29
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br label %_Z2f2v.exit, !dbg !29
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if.end.i8: ; preds = %_Z2f1v.exit
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store i32 4, i32* %retval.i2, !dbg !30
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br label %_Z2f2v.exit, !dbg !30
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_Z2f2v.exit: ; preds = %if.then.i7, %if.end.i8
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%3 = load i32* %retval.i2, !dbg !31
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ret i32 0, !dbg !32
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata) #1
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declare zeroext i1 @_Z1fv() #2
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attributes #0 = { 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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attributes #1 = { nounwind readnone }
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attributes #2 = { "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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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!13, !14}
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!llvm.ident = !{!15}
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!0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.5.0 ", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [/tmp/dbginfo/inline-scopes.cpp] [DW_LANG_C_plus_plus]
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!1 = metadata !{metadata !"inline-scopes.cpp", metadata !"/tmp/dbginfo"}
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!2 = metadata !{}
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!3 = metadata !{metadata !4, metadata !10, metadata !12}
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!4 = metadata !{i32 786478, metadata !5, metadata !6, metadata !"main", metadata !"main", metadata !"", i32 7, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 ()* @main, null, null, metadata !2, i32 7} ; [ DW_TAG_subprogram ] [line 7] [def] [main]
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!5 = metadata !{metadata !"y.cc", metadata !"/tmp/dbginfo"}
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!6 = metadata !{i32 786473, metadata !5} ; [ DW_TAG_file_type ] [/tmp/dbginfo/y.cc]
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!7 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!8 = metadata !{metadata !9}
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!9 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
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!10 = metadata !{i32 786478, metadata !1, metadata !11, metadata !"f2", metadata !"f2", metadata !"_Z2f2v", i32 8, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, null, null, null, metadata !2, i32 8} ; [ DW_TAG_subprogram ] [line 8] [def] [f2]
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!11 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [/tmp/dbginfo/inline-scopes.cpp]
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!12 = metadata !{i32 786478, metadata !1, metadata !11, metadata !"f1", metadata !"f1", metadata !"_Z2f1v", i32 2, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, null, null, null, metadata !2, i32 2} ; [ DW_TAG_subprogram ] [line 2] [def] [f1]
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!13 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
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!14 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
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!15 = metadata !{metadata !"clang version 3.5.0 "}
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!16 = metadata !{i32 786688, metadata !17, metadata !"b", metadata !11, i32 3, metadata !18, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [b] [line 3]
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!17 = metadata !{i32 786443, metadata !1, metadata !12, i32 3, i32 0, i32 0, i32 1} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/inline-scopes.cpp]
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!18 = metadata !{i32 786468, null, null, metadata !"bool", i32 0, i64 8, i64 8, i64 0, i32 0, i32 2} ; [ DW_TAG_base_type ] [bool] [line 0, size 8, align 8, offset 0, enc DW_ATE_boolean]
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!19 = metadata !{i32 3, i32 0, metadata !17, metadata !20}
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!20 = metadata !{i32 8, i32 0, metadata !4, null} ; [ DW_TAG_imported_declaration ]
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!21 = metadata !{i32 4, i32 0, metadata !17, metadata !20}
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!22 = metadata !{i32 5, i32 0, metadata !12, metadata !20}
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!23 = metadata !{i32 6, i32 0, metadata !12, metadata !20}
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!24 = metadata !{i32 786688, metadata !25, metadata !"b", metadata !6, i32 2, metadata !18, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [b] [line 2]
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!25 = metadata !{i32 786443, metadata !5, metadata !26, i32 2, i32 0, i32 0, i32 0} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/y.cc]
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!26 = metadata !{i32 786443, metadata !5, metadata !10} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/y.cc]
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!27 = metadata !{i32 2, i32 0, metadata !25, metadata !28}
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!28 = metadata !{i32 9, i32 0, metadata !4, null}
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!29 = metadata !{i32 3, i32 0, metadata !25, metadata !28}
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!30 = metadata !{i32 4, i32 0, metadata !26, metadata !28}
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!31 = metadata !{i32 5, i32 0, metadata !26, metadata !28}
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!32 = metadata !{i32 10, i32 0, metadata !4, null}
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