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Fix coverage for files with global constructors again. Adds a testcase to the commit from r206671, as requested by David Blaikie.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210239 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky 2014-06-05 04:31:43 +00:00
parent 0bc7690e34
commit 59aecc1cf0
2 changed files with 68 additions and 0 deletions
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10
lib/Transforms/Instrumentation/GCOVProfiling.cpp
View File

@ -457,8 +457,13 @@ static bool functionHasLines(Function *F) {
// Debug intrinsic locations correspond to the location of the
// declaration, not necessarily any statements or expressions.
if (isa<DbgInfoIntrinsic>(I)) continue;
const DebugLoc &Loc = I->getDebugLoc();
if (Loc.isUnknown()) continue;
// Artificial lines such as calls to the global constructors.
if (Loc.getLine() == 0) continue;
return true;
}
}
@ -521,8 +526,13 @@ void GCOVProfiler::emitProfileNotes() {
// Debug intrinsic locations correspond to the location of the
// declaration, not necessarily any statements or expressions.
if (isa<DbgInfoIntrinsic>(I)) continue;
const DebugLoc &Loc = I->getDebugLoc();
if (Loc.isUnknown()) continue;
// Artificial lines such as calls to the global constructors.
if (Loc.getLine() == 0) continue;
if (Line == Loc.getLine()) continue;
Line = Loc.getLine();
if (SP != getDISubprogram(Loc.getScope(*Ctx))) continue;

58
test/Transforms/GCOVProfiling/global-ctor.ll Normal file
View File

@ -0,0 +1,58 @@
; RUN: echo '!16 = metadata !{metadata !"%T/global-ctor.ll", metadata !0}' > %t1
; RUN: cat %s %t1 > %t2
; RUN: opt -insert-gcov-profiling -disable-output < %t2
; RUN: not grep '_GLOBAL__sub_I_global-ctor' %T/global-ctor.gcno
; RUN: rm %T/global-ctor.gcno
; REQUIRES: shell
@x = global i32 0, align 4
@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_global-ctor.ll, i8* null }]
; Function Attrs: nounwind
define internal void @__cxx_global_var_init() #0 section ".text.startup" {
entry:
br label %0
; <label>:0 ; preds = %entry
%call = call i32 @_Z1fv(), !dbg !13
store i32 %call, i32* @x, align 4, !dbg !13
ret void, !dbg !13
}
declare i32 @_Z1fv() #1
; Function Attrs: nounwind
define internal void @_GLOBAL__sub_I_global-ctor.ll() #0 section ".text.startup" {
entry:
br label %0
; <label>:0 ; preds = %entry
call void @__cxx_global_var_init(), !dbg !14
ret void, !dbg !14
}
attributes #0 = { nounwind }
attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!10, !11}
!llvm.gcov = !{!16}
!llvm.ident = !{!12}
!0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.5.0 (trunk 210217)", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !"", i32 2} ; [ DW_TAG_compile_unit ] [/home/nlewycky/<stdin>] [DW_LANG_C_plus_plus]
!1 = metadata !{metadata !"<stdin>", metadata !"/home/nlewycky"}
!2 = metadata !{}
!3 = metadata !{metadata !4, metadata !8}
!4 = metadata !{i32 786478, metadata !5, metadata !6, metadata !"__cxx_global_var_init", metadata !"__cxx_global_var_init", metadata !"", i32 2, metadata !7, i1 true, i1 true, i32 0, i32 0, null, i32 256, i1 false, void ()* @__cxx_global_var_init, null, null, metadata !2, i32 2} ; [ DW_TAG_subprogram ] [line 2] [local] [def] [__cxx_global_var_init]
!5 = metadata !{metadata !"global-ctor.ll", metadata !"/home/nlewycky"}
!6 = metadata !{i32 786473, metadata !5} ; [ DW_TAG_file_type ] [/home/nlewycky/global-ctor.ll]
!7 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !2, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!8 = metadata !{i32 786478, metadata !1, metadata !9, metadata !"", metadata !"", metadata !"_GLOBAL__sub_I_global-ctor.ll", i32 0, metadata !7, i1 true, i1 true, i32 0, i32 0, null, i32 64, i1 false, void ()* @_GLOBAL__sub_I_global-ctor.ll, null, null, metadata !2, i32 0} ; [ DW_TAG_subprogram ] [line 0] [local] [def]
!9 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [/home/nlewycky/<stdin>]
!10 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
!11 = metadata !{i32 2, metadata !"Debug Info Version", i32 1}
!12 = metadata !{metadata !"clang version 3.5.0 (trunk 210217)"}
!13 = metadata !{i32 2, i32 0, metadata !4, null}
!14 = metadata !{i32 0, i32 0, metadata !15, null}
!15 = metadata !{i32 786443, metadata !5, metadata !8} ; [ DW_TAG_lexical_block ] [/home/nlewycky/global-ctor.ll]