[llvm-bugs] [Bug 47129] New: DebugInfo/Generic/debug-label-inline.ll FAILs

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=47129

            Bug ID: 47129
           Summary: DebugInfo/Generic/debug-label-inline.ll FAILs
           Product: libraries
           Version: trunk
          Hardware: Sun
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: DebugInfo
          Assignee: unassignedbugs at nondot.org
          Reporter: ro at gcc.gnu.org
                CC: jdevlieghere at apple.com, keith.walker at arm.com,
                    llvm-bugs at lists.llvm.org,
                    paul_robinson at playstation.sony.com

The DebugInfo/Generic/debug-label-inline.ll test FAILs on Sparc.  I'm seeing it
on both sparcv9-sun-solaris2.11 and sparc64-unknown-linux-gnu, so it seems to
be
rather a Sparc than a Solaris issue:

Command Output (stderr):
--
/vol/llvm/src/llvm-project/local/llvm/test/DebugInfo/Generic/debug-label-inline.ll:4:10:
error: CHECK: expected string not found in input
; CHECK: [[LABEL_ORIGIN:0x[0-9a-zA-Z]+]]:{{ *}}DW_TAG_label
         ^
<stdin>:32:1: note: scanning from here
0x00000000: Compile Unit: length = 0x00000047, format = DWARF32, version =
0x0004, abbr_offset = 0x0000, addr_size = 0x08 (next unit at 0x0000004b)
^
<stdin>:36:20: note: possible intended match here
 DW_AT_language [DW_FORM_data2] (DW_LANG_C99)
                   ^

Input file: <stdin>
Check file:
/vol/llvm/src/llvm-project/local/llvm/test/DebugInfo/Generic/debug-label-inline.ll

-dump-input=help explains the following input dump.

Input was:
<<<<<<
           .
           .
           .
          27:  DW_AT_encoding DW_FORM_data1
          28:  DW_AT_byte_size DW_FORM_data1
          29:
          30:
          31: .debug_info contents:
          32: 0x00000000: Compile Unit: length = 0x00000047, format = DWARF32,
version = 0x0004, abbr_offset = 0x0000, addr_size = 0x08 (next unit at
0x0000004b)
check:4'0    
X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
error: no match found
          33:
check:4'0     ~
          34: 0x0000000b: DW_TAG_compile_unit [1] *
check:4'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          35:  DW_AT_producer [DW_FORM_strp] ( .debug_str[0x00000000] = "")
check:4'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          36:  DW_AT_language [DW_FORM_data2] (DW_LANG_C99)
check:4'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
check:4'1                        ?                          possible intended
match
          37:  DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000001] =
"debug-label-inline.c")
check:4'0    
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          38:  DW_AT_stmt_list [DW_FORM_sec_offset] (0x00000000)
check:4'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          39:  DW_AT_comp_dir [DW_FORM_strp] ( .debug_str[0x00000016] = "./")
check:4'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          40:  DW_AT_GNU_pubnames [DW_FORM_flag_present] (true)
check:4'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          41:  DW_AT_low_pc [DW_FORM_addr] (0x0000000000000000 ".text")
check:4'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
           .
           .
           .
>>>>>>

I think that f1 is inlined completely without line number info:

* On amd64-pc-solaris2.11 the .s file has

Ltmp0:
        #DEBUG_LABEL: f1:top
        .loc    1 9 0                           # debug-label-inline.c:9:0
        addl    %eax, %ecx
.Ltmp1:
        .loc    1 18 0                          # debug-label-inline.c:18:0
        movl    %ecx, %eax
        retq
.Ltmp2:

* On sparcv9-sun-solaris2.11 there is

.Ltmp0:
        !DEBUG_LABEL: f1:top
        retl
        add %o1, %o0, %o0
.Ltmp1:

I don't have the slightest idea how to investigate let alone fix this.

The issue can be seen on an all-targets build with

llc -mtriple sparcv9-sun-solaris2.11 -O0 -filetype=obj -o -
llvm/test/DebugInfo/Generic/debug-label-inline.ll |llvm-dwarfdump -v - |
FileCheck llvm/test/DebugInfo/Generic/debug-label-inline.ll

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