6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-17 04:24:00 +00:00
Code Issues Projects Releases Wiki Activity

CR feedback for r195166: Add comments regarding type unit mapping and type units disabling cross-CU sharing.

Browse Source 
Changes suggested by Manman Ren.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195262 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Blaikie
2013-11-20 18:40:16 +00:00
parent fd03357c25
commit 89cadbe6b0
2 changed files with 12 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
View File

@ -112,8 +112,13 @@ int64_t CompileUnit::getDefaultLowerBound() const {
/// Check whether the DIE for this MDNode can be shared across CUs.
static bool isShareableAcrossCUs(DIDescriptor D) {
// When the MDNode can be part of the type system, the DIE can be
// shared across CUs.
// When the MDNode can be part of the type system, the DIE can be shared
// across CUs.
// Combining type units and cross-CU DIE sharing is lower value (since
// cross-CU DIE sharing is used in LTO and removes type redundancy at that
// level already) but may be implementable for some value in projects
// building multiple independent libraries with LTO and then linking those
// together.
return (D.isType() ||
(D.isSubprogram() && !DISubprogram(D).isDefinition())) &&
!GenerateTypeUnits;