DebugInfo: Fission: Ensure the address pool entries for location lists are emitted.

The address pool was being emitted before location lists. The latter
could add more entries to the pool which would be lost/never emitted.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211284 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 3847eb124f3d28b794f785d9cef840c55d2efda2..f78ca2c03b4ec247a29ce4e2ee141318da349244 100644 (file)
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -1038,9 +1038,9 @@ void DwarfDebug::endModule() {
     emitDebugInfoDWO();
     emitDebugAbbrevDWO();
     emitDebugLineDWO();
+    emitDebugLocDWO();
     // Emit DWO addresses.
     AddrPool.emit(*Asm, Asm->getObjFileLowering().getDwarfAddrSection());
-    emitDebugLocDWO();
   } else
     // Emit info into a debug loc section.
     emitDebugLoc();

diff --git a/test/DebugInfo/X86/fission-ranges.ll b/test/DebugInfo/X86/fission-ranges.ll
index 057039c3c5ccfa20850735e907d1f9d2c18cd564..135837582fcc671462ed00b4bd67079f0ace45ec 100644 (file)
--- a/test/DebugInfo/X86/fission-ranges.ll
+++ b/test/DebugInfo/X86/fission-ranges.ll
@@ -44,6 +44,13 @@
 ; Make sure we don't produce any relocations in any .dwo section (though in particular, debug_info.dwo)
 ; HDR-NOT: .rela.{{.*}}.dwo
 
+; Make sure we have enough stuff in the debug_addr to cover the address indexes
+; (6 is the last index in debug_loc.dwo, making 7 entries of 8 bytes each, 7 * 8
+; == 56 base 10 == 38 base 16)
+
+; HDR: .debug_addr 00000038
+; HDR-NOT: .rela.{{.*}}.dwo
+
 ; From the code:
 
 ; extern int c;