replica
/
hanchenye-llvm-project
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Turn on CU ranges if we've got multiple compile units in the same 

module since there's no range guarantee that we could make given
output order. This also fixes up the testcases that have multiple
CUs to have the correct range offset.

llvm-svn: 200422
This commit is contained in:
Eric Christopher 2014-01-29 22:06:27 +00:00
parent 179fba19fa
commit fb8dd0085e
2 changed files with 11 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
View File

@ -1119,10 +1119,12 @@ void DwarfDebug::endSections() {
}
// For now only turn on CU ranges if we've explicitly asked for it,
// we have -ffunction-sections enabled, or we've emitted a function
// into a unique section. At this point all sections should be finalized
// except for dwarf sections.
HasCURanges = DwarfCURanges || UsedNonDefaultText ||
// we have -ffunction-sections enabled, we've emitted a function
// into a unique section, or we're using LTO. If we're using LTO then
// we can't know that any particular function in the module is correlated
// to a particular CU and so we need to be conservative. At this point all
// sections should be finalized except for dwarf sections.
HasCURanges = DwarfCURanges || UsedNonDefaultText || (CUMap.size() > 1) ||
TargetMachine::getFunctionSections();
}

8
llvm/test/DebugInfo/X86/stmt-list-multiple-compile-units.ll
View File

@ -8,11 +8,11 @@
; CHECK: .debug_info contents:
; CHECK: DW_TAG_compile_unit
; CHECK: DW_AT_stmt_list [DW_FORM_sec_offset] (0x00000000)
; CHECK: DW_AT_low_pc [DW_FORM_addr] (0x0000000000000000)
; CHECK: DW_AT_ranges [DW_FORM_sec_offset] (0x00000000)
; CHECK: DW_TAG_compile_unit
; CHECK: DW_AT_stmt_list [DW_FORM_sec_offset] (0x0000003c)
; CHECK: DW_AT_low_pc [DW_FORM_addr] (0x0000000000000000)
; CHECK: DW_AT_ranges [DW_FORM_sec_offset] (0x00000020)
; CHECK: .debug_line contents:
; CHECK-NEXT: Line table prologue:
@ -26,11 +26,11 @@
; DWARF3: .debug_info contents:
; DWARF3: DW_TAG_compile_unit
; DWARF3: DW_AT_stmt_list [DW_FORM_data4] (0x00000000)
; DWARF3: DW_AT_low_pc [DW_FORM_addr] (0x0000000000000000)
; DWARF3: DW_AT_ranges [DW_FORM_data4] (0x00000000)
; DWARF3: DW_TAG_compile_unit
; DWARF3: DW_AT_stmt_list [DW_FORM_data4] (0x0000003c)
; DWARF3: DW_AT_low_pc [DW_FORM_addr] (0x0000000000000000)
; DWARF3: DW_AT_ranges [DW_FORM_data4] (0x00000020)
; DWARF3: .debug_line contents:
; DWARF3-NEXT: Line table prologue: