https://llvm.org/bugs/show_bug.cgi?id=25463
Bug ID: 25463
Summary: Inlined callsite does not have discriminator emitted
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: DebugInfo
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
We need to have discriminator emitted for the inlined callsites to attribute
profiles correctly to inlined instances.
# cat a.cc
void abc();
void xyz();
static void bar() { abc(); }
static void baz() { xyz(); }
void foo(int i) {
bar(); baz();
}
# g++ -g -O2 a.cc -c
# objdump --dwarf=info a.o|grep -B 6 AT_GNU_discriminator
<2><94>: Abbrev Number: 7 (DW_TAG_inlined_subroutine)
<95> DW_AT_abstract_origin: <0x35>
<99> DW_AT_low_pc : 0xd
<a1> DW_AT_high_pc : 0x5
<a9> DW_AT_call_file : 1
<aa> DW_AT_call_line : 8
<ab> DW_AT_GNU_discriminator: 1
# clang++ -g -O2 a.cc -c
# objdump --dwarf=info a.o|grep -B 6 AT_GNU_discriminator
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