llvm-project/llvm/test/CodeGen/XCore
Adrian Prantl 75819aedf6 [PR27284] Reverse the ownership between DICompileUnit and DISubprogram.
Currently each Function points to a DISubprogram and DISubprogram has a
scope field. For member functions the scope is a DICompositeType. DIScopes
point to the DICompileUnit to facilitate type uniquing.

Distinct DISubprograms (with isDefinition: true) are not part of the type
hierarchy and cannot be uniqued. This change removes the subprograms
list from DICompileUnit and instead adds a pointer to the owning compile
unit to distinct DISubprograms. This would make it easy for ThinLTO to
strip unneeded DISubprograms and their transitively referenced debug info.

Motivation
----------

Materializing DISubprograms is currently the most expensive operation when
doing a ThinLTO build of clang.

We want the DISubprogram to be stored in a separate Bitcode block (or the
same block as the function body) so we can avoid having to expensively
deserialize all DISubprograms together with the global metadata. If a
function has been inlined into another subprogram we need to store a
reference the block containing the inlined subprogram.

Attached to https://llvm.org/bugs/show_bug.cgi?id=27284 is a python script
that updates LLVM IR testcases to the new format.

http://reviews.llvm.org/D19034
<rdar://problem/25256815>

llvm-svn: 266446
2016-04-15 15:57:41 +00:00
..
2008-11-17-Shl64.ll
2009-01-08-Crash.ll
2009-01-14-Remat-Crash.ll
2009-03-27-v2f64-param.ll
2009-07-15-store192.ll
2010-02-25-LSR-Crash.ll
2011-01-31-DAGCombineBug.ll
2011-08-01-DynamicAllocBug.ll
DbgValueOtherTargets.test
addsub64.ll
aliases.ll
align.ll [MC] Use .p2align instead of .align 2016-01-26 00:03:25 +00:00
alignment.ll
ashr.ll
atomic.ll
basictest.ll
bigstructret.ll
byVal.ll
call.ll
codemodel.ll
constants.ll
dwarf_debug.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
epilogue_prologue.ll [MC] Use .p2align instead of .align 2016-01-26 00:03:25 +00:00
events.ll
exception.ll
float-intrinsics.ll
fneg.ll
getid.ll
globals.ll
indirectbr.ll
inline-asm.ll
ladd_lsub_combine.ll
licm-ldwcp.ll
linkage.ll
lit.local.cfg
llvm-intrinsics.ll
load.ll
memcpy.ll Revert "Change memcpy/memset/memmove to have dest and source alignments." 2015-11-19 05:56:52 +00:00
misc-intrinsics.ll
mkmsk.ll
mul64.ll
offset_folding.ll
private.ll
ps-intrinsics.ll
resources.ll
resources_combine.ll
scavenging.ll [MC] Use .p2align instead of .align 2016-01-26 00:03:25 +00:00
sext.ll
shedulingPreference.ll
sr-intrinsics.ll
store.ll
switch.ll
switch_long.ll
threads.ll [SelectionDAG] Fold more offsets into GlobalAddresses 2016-01-22 03:57:34 +00:00
tls.ll
trampoline.ll
trap.ll
unaligned_load.ll
unaligned_store.ll
unaligned_store_combine.ll
varargs.ll
zext.ll
zextfree.ll