; RUN: opt -deadargelim -S < %s | FileCheck %s
; PR14016
-; Check that debug info metadata for subprograms stores pointers to
-; updated LLVM functions.
+; Built with clang (then manually running -mem2reg with opt) from the following source:
+; static void f1(int, ...) {
+; }
+;
+; void f2() {
+; f1(1);
+; }
-target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
-target triple = "x86_64-unknown-linux-gnu"
+; Test both varargs removal and removal of a traditional dead arg together, to
+; test both the basic functionality, and a particular wrinkle involving updating
+; the function->debug info mapping on update to ensure it's accurate when used
+; again for the next removal.
-@x = global i32 0, align 4
+; CHECK: !DISubprogram(name: "f1",{{.*}} function: void ()* @_ZL2f1iz
-define void @_Z3runv() uwtable {
-entry:
- call void @_ZN12_GLOBAL__N_18dead_argEPv(i8* null), !dbg !10
- call void (...)* @_ZN12_GLOBAL__N_111dead_varargEz(), !dbg !12
- ret void, !dbg !13
-}
+; Check that debug info metadata for subprograms stores pointers to
+; updated LLVM functions.
-; Argument will be deleted
-define internal void @_ZN12_GLOBAL__N_18dead_argEPv(i8* %foo) nounwind uwtable {
+; Function Attrs: uwtable
+define void @_Z2f2v() #0 {
entry:
- %0 = load i32* @x, align 4, !dbg !14
- %inc = add nsw i32 %0, 1, !dbg !14
- store i32 %inc, i32* @x, align 4, !dbg !14
+ call void (i32, ...) @_ZL2f1iz(i32 1), !dbg !15
ret void, !dbg !16
}
-; Vararg will be deleted
-define internal void @_ZN12_GLOBAL__N_111dead_varargEz(...) nounwind uwtable {
+; Function Attrs: nounwind uwtable
+define internal void @_ZL2f1iz(i32, ...) #1 {
entry:
- %0 = load i32* @x, align 4, !dbg !17
- %inc = add nsw i32 %0, 1, !dbg !17
- store i32 %inc, i32* @x, align 4, !dbg !17
- ret void, !dbg !19
+ call void @llvm.dbg.value(metadata i32 %0, i64 0, metadata !17, metadata !18), !dbg !19
+ ret void, !dbg !20
}
-!llvm.dbg.cu = !{!0}
-!llvm.module.flags = !{!21}
-
-!0 = metadata !{metadata !"0x11\004\00clang version 3.2 (trunk 165305)\000\00\000\00\000", metadata !20, metadata !1, metadata !1, metadata !3, metadata !1, metadata !1} ; [ DW_TAG_compile_unit ] [/home/samsonov/tmp/clang-di/test.cc] [DW_LANG_C_plus_plus]
-!1 = metadata !{i32 0}
-!3 = metadata !{metadata !5, metadata !8, metadata !9}
-!5 = metadata !{metadata !"0x2e\00run\00run\00\008\000\001\000\006\00256\000\008", metadata !20, metadata !6, metadata !7, null, void ()* @_Z3runv, null, null, metadata !1} ; [ DW_TAG_subprogram ] [line 8] [def] [run]
-!6 = metadata !{metadata !"0x29", metadata !20} ; [ DW_TAG_file_type ]
-!7 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !1, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
-!8 = metadata !{metadata !"0x2e\00dead_vararg\00dead_vararg\00\005\001\001\000\006\00256\000\005", metadata !20, metadata !6, metadata !7, null, void (...)* @_ZN12_GLOBAL__N_111dead_varargEz, null, null, metadata !1} ; [ DW_TAG_subprogram ] [line 5] [local] [def] [dead_vararg]
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.declare(metadata, metadata, metadata) #2
-; CHECK: metadata !"0x2e\00dead_vararg\00{{[^"]+}}"{{.*}}void ()* @_ZN12_GLOBAL__N_111dead_varargEz
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
-!9 = metadata !{metadata !"0x2e\00dead_arg\00dead_arg\00\004\001\001\000\006\00256\000\004", metadata !20, metadata !6, metadata !7, null, void (i8*)* @_ZN12_GLOBAL__N_18dead_argEPv, null, null, metadata !1} ; [ DW_TAG_subprogram ] [line 4] [local] [def] [dead_arg]
+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" }
+attributes #1 = { 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" }
+attributes #2 = { nounwind readnone }
-; CHECK: metadata !"0x2e\00dead_arg\00{{[^"]+}}"{{.*}}void ()* @_ZN12_GLOBAL__N_18dead_argEPv
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!12, !13}
+!llvm.ident = !{!14}
-!10 = metadata !{i32 8, i32 14, metadata !11, null}
-!11 = metadata !{metadata !"0xb\008\0012\000", metadata !20, metadata !5} ; [ DW_TAG_lexical_block ] [/home/samsonov/tmp/clang-di/test.cc]
-!12 = metadata !{i32 8, i32 27, metadata !11, null}
-!13 = metadata !{i32 8, i32 42, metadata !11, null}
-!14 = metadata !{i32 4, i32 28, metadata !15, null}
-!15 = metadata !{metadata !"0xb\004\0026\002", metadata !20, metadata !9} ; [ DW_TAG_lexical_block ] [/home/samsonov/tmp/clang-di/test.cc]
-!16 = metadata !{i32 4, i32 33, metadata !15, null}
-!17 = metadata !{i32 5, i32 25, metadata !18, null}
-!18 = metadata !{metadata !"0xb\005\0023\001", metadata !20, metadata !8} ; [ DW_TAG_lexical_block ] [/home/samsonov/tmp/clang-di/test.cc]
-!19 = metadata !{i32 5, i32 30, metadata !18, null}
-!20 = metadata !{metadata !"test.cc", metadata !"/home/samsonov/tmp/clang-di"}
-!21 = metadata !{i32 1, metadata !"Debug Info Version", i32 2}
+!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!1 = !DIFile(filename: "dbg.cpp", directory: "/tmp/dbginfo")
+!2 = !{}
+!3 = !{!4, !8}
+!4 = !DISubprogram(name: "f2", linkageName: "_Z2f2v", line: 4, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 4, file: !1, scope: !5, type: !6, function: void ()* @_Z2f2v, variables: !2)
+!5 = !DIFile(filename: "dbg.cpp", directory: "/tmp/dbginfo")
+!6 = !DISubroutineType(types: !7)
+!7 = !{null}
+!8 = !DISubprogram(name: "f1", linkageName: "_ZL2f1iz", line: 1, isLocal: true, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !1, scope: !5, type: !9, function: void (i32, ...)* @_ZL2f1iz, variables: !2)
+!9 = !DISubroutineType(types: !10)
+!10 = !{null, !11, null}
+!11 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!12 = !{i32 2, !"Dwarf Version", i32 4}
+!13 = !{i32 2, !"Debug Info Version", i32 3}
+!14 = !{!"clang version 3.6.0 "}
+!15 = !DILocation(line: 5, column: 3, scope: !4)
+!16 = !DILocation(line: 6, column: 1, scope: !4)
+!17 = !DILocalVariable(name: "", line: 1, arg: 1, scope: !8, file: !5, type: !11)
+!18 = !DIExpression()
+!19 = !DILocation(line: 1, column: 19, scope: !8)
+!20 = !DILocation(line: 2, column: 1, scope: !8)
projects / oota-llvm.git / blobdiff