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This reverts commit r218918, effectively reapplying r218914 after fixing an Ocaml bindings test and an Asan crash. The root cause of the latter was a tightened-up check in `DILexicalBlock::Verify()`, so I'll file a PR to investigate who requires the loose check (and why). Original commit message follows. -- This patch addresses the first stage of PR17891 by folding constant arguments together into a single MDString. Integers are stringified and a `\0` character is used as a separator. Part of PR17891. Note: I've attached my testcases upgrade scripts to the PR. If I've just broken your out-of-tree testcases, they might help. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219010 91177308-0d34-0410-b5e6-96231b3b80d8
119 lines
6.9 KiB
LLVM
119 lines
6.9 KiB
LLVM
; REQUIRES: object-emission
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;
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; RUN: llc -mtriple=x86_64-unknown-linux-gnu -O0 -filetype=obj < %s > %t
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; RUN: llvm-dwarfdump %t | FileCheck %s
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; Test case derived from compiling the following source with clang -g:
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;
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; namespace pr14763 {
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; struct foo {
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; foo(const foo&);
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; };
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;
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; foo func(foo f) {
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; return f; // reference 'f' for now because otherwise we hit another bug
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; }
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;
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; void sink(void*);
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;
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; void func2(bool b, foo g) {
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; if (b)
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; sink(&g); // reference 'f' for now because otherwise we hit another bug
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; }
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; }
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; CHECK: debug_info contents
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; 0x74 is DW_OP_breg4, showing that the parameter is accessed indirectly
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; (with a zero offset) from the register parameter
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; CHECK: DW_AT_location{{.*}}(<0x0{{.}}> 74 00
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name{{.*}} = "f"
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; CHECK: DW_AT_location{{.*}}([[G_LOC:0x[0-9]*]])
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name{{.*}} = "g"
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; CHECK: debug_loc contents
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; CHECK-NEXT: [[G_LOC]]: Beginning
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; CHECK-NEXT: Ending
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; CHECK-NEXT: Location description: 74 00
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%"struct.pr14763::foo" = type { i8 }
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; Function Attrs: uwtable
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define void @_ZN7pr147634funcENS_3fooE(%"struct.pr14763::foo"* noalias sret %agg.result, %"struct.pr14763::foo"* %f) #0 {
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entry:
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call void @llvm.dbg.declare(metadata !{%"struct.pr14763::foo"* %f}, metadata !22, metadata !{metadata !"0x102"}), !dbg !24
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call void @_ZN7pr147633fooC1ERKS0_(%"struct.pr14763::foo"* %agg.result, %"struct.pr14763::foo"* %f), !dbg !25
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ret void, !dbg !25
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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declare void @_ZN7pr147633fooC1ERKS0_(%"struct.pr14763::foo"*, %"struct.pr14763::foo"*) #2
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; Function Attrs: uwtable
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define void @_ZN7pr147635func2EbNS_3fooE(i1 zeroext %b, %"struct.pr14763::foo"* %g) #0 {
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entry:
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%b.addr = alloca i8, align 1
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%frombool = zext i1 %b to i8
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store i8 %frombool, i8* %b.addr, align 1
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call void @llvm.dbg.declare(metadata !{i8* %b.addr}, metadata !26, metadata !{metadata !"0x102"}), !dbg !27
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call void @llvm.dbg.declare(metadata !{%"struct.pr14763::foo"* %g}, metadata !28, metadata !{metadata !"0x102"}), !dbg !27
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%0 = load i8* %b.addr, align 1, !dbg !29
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%tobool = trunc i8 %0 to i1, !dbg !29
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br i1 %tobool, label %if.then, label %if.end, !dbg !29
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if.then: ; preds = %entry
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%1 = bitcast %"struct.pr14763::foo"* %g to i8*, !dbg !31
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call void @_ZN7pr147634sinkEPv(i8* %1), !dbg !31
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br label %if.end, !dbg !31
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if.end: ; preds = %if.then, %entry
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ret void, !dbg !32
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}
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declare void @_ZN7pr147634sinkEPv(i8*) #2
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attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "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"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!21, !33}
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!0 = metadata !{metadata !"0x11\004\00clang version 3.4 \000\00\000\00\001", metadata !1, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2} ; [ DW_TAG_compile_unit ] [/tmp/pass.cpp] [DW_LANG_C_plus_plus]
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!1 = metadata !{metadata !"pass.cpp", metadata !"/tmp"}
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!2 = metadata !{}
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!3 = metadata !{metadata !4, metadata !17}
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!4 = metadata !{metadata !"0x2e\00func\00func\00_ZN7pr147634funcENS_3fooE\006\000\001\000\006\00256\000\006", metadata !1, metadata !5, metadata !6, null, void (%"struct.pr14763::foo"*, %"struct.pr14763::foo"*)* @_ZN7pr147634funcENS_3fooE, null, null, metadata !2} ; [ DW_TAG_subprogram ] [line 6] [def] [func]
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!5 = metadata !{metadata !"0x39\00pr14763\001", metadata !1, null} ; [ DW_TAG_namespace ] [pr14763] [line 1]
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!6 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!7 = metadata !{metadata !8, metadata !8}
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!8 = metadata !{metadata !"0x13\00foo\002\008\008\000\000\000", metadata !1, metadata !5, null, metadata !9, null, null, null} ; [ DW_TAG_structure_type ] [foo] [line 2, size 8, align 8, offset 0] [def] [from ]
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!9 = metadata !{metadata !10}
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!10 = metadata !{metadata !"0x2e\00foo\00foo\00\003\000\000\000\006\00256\000\003", metadata !1, metadata !8, metadata !11, null, null, null, i32 0, metadata !16} ; [ DW_TAG_subprogram ] [line 3] [foo]
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!11 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !12, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!12 = metadata !{null, metadata !13, metadata !14}
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!13 = metadata !{metadata !"0xf\00\000\0064\0064\000\001088", i32 0, null, metadata !8} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from foo]
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!14 = metadata !{metadata !"0x10\00\000\000\000\000\000", null, null, metadata !15} ; [ DW_TAG_reference_type ] [line 0, size 0, align 0, offset 0] [from ]
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!15 = metadata !{metadata !"0x26\00\000\000\000\000\000", null, null, metadata !8} ; [ DW_TAG_const_type ] [line 0, size 0, align 0, offset 0] [from foo]
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!16 = metadata !{i32 786468}
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!17 = metadata !{metadata !"0x2e\00func2\00func2\00_ZN7pr147635func2EbNS_3fooE\0012\000\001\000\006\00256\000\0012", metadata !1, metadata !5, metadata !18, null, void (i1, %"struct.pr14763::foo"*)* @_ZN7pr147635func2EbNS_3fooE, null, null, metadata !2} ; [ DW_TAG_subprogram ] [line 12] [def] [func2]
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!18 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !19, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!19 = metadata !{null, metadata !20, metadata !8}
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!20 = metadata !{metadata !"0x24\00bool\000\008\008\000\000\002", null, null} ; [ DW_TAG_base_type ] [bool] [line 0, size 8, align 8, offset 0, enc DW_ATE_boolean]
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!21 = metadata !{i32 2, metadata !"Dwarf Version", i32 3}
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!22 = metadata !{metadata !"0x101\00f\0016777222\008192", metadata !4, metadata !23, metadata !8} ; [ DW_TAG_arg_variable ] [f] [line 6]
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!23 = metadata !{metadata !"0x29", metadata !1} ; [ DW_TAG_file_type ] [/tmp/pass.cpp]
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!24 = metadata !{i32 6, i32 0, metadata !4, null}
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!25 = metadata !{i32 7, i32 0, metadata !4, null}
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!26 = metadata !{metadata !"0x101\00b\0016777228\000", metadata !17, metadata !23, metadata !20} ; [ DW_TAG_arg_variable ] [b] [line 12]
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!27 = metadata !{i32 12, i32 0, metadata !17, null}
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!28 = metadata !{metadata !"0x101\00g\0033554444\008192", metadata !17, metadata !23, metadata !8} ; [ DW_TAG_arg_variable ] [g] [line 12]
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!29 = metadata !{i32 13, i32 0, metadata !30, null}
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!30 = metadata !{metadata !"0xb\0013\000\000", metadata !1, metadata !17} ; [ DW_TAG_lexical_block ] [/tmp/pass.cpp]
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!31 = metadata !{i32 14, i32 0, metadata !30, null}
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!32 = metadata !{i32 15, i32 0, metadata !17, null}
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!33 = metadata !{i32 1, metadata !"Debug Info Version", i32 2}
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