llvm-project/llvm/test/Transforms/SafeStack
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
..
AArch64 [safestack] Add canary to unsafe stack frames 2016-04-11 22:27:48 +00:00
ARM [safestack] Make sure the unsafe stack pointer is popped in all cases 2016-02-02 01:03:11 +00:00
X86 [safestack] Add canary to unsafe stack frames 2016-04-11 22:27:48 +00:00
addr-taken.ll
array-aligned.ll
array.ll [safestack] Add option for non-TLS unsafe stack pointer. 2015-12-22 00:13:11 +00:00
byval.ll [safestack] Protect byval function arguments. 2015-12-01 00:40:05 +00:00
call.ll [safestack] Rewrite isAllocaSafe using SCEV. 2015-11-13 21:21:42 +00:00
cast.ll [safestack] Rewrite isAllocaSafe using SCEV. 2015-11-13 21:21:42 +00:00
constant-gep-call.ll
constant-gep.ll
constant-geps.ll
debug-loc.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
dynamic-alloca.ll [safestack] Make sure the unsafe stack pointer is popped in all cases 2016-02-02 01:03:11 +00:00
escape-addr-pointer.ll
escape-bitcast-store.ll
escape-bitcast-store2.ll
escape-call.ll
escape-casted-pointer.ll
escape-gep-call.ll
escape-gep-invoke.ll
escape-gep-negative.ll
escape-gep-ptrtoint.ll
escape-gep-store.ll
escape-phi-call.ll
escape-select-call.ll
escape-vector.ll
invoke.ll
no-attr.ll SafeStack: Create the unsafe stack pointer on demand. 2015-06-22 20:26:54 +00:00
phi-cycle.ll
ret.ll [safestack] Rewrite isAllocaSafe using SCEV. 2015-11-13 21:21:42 +00:00
setjmp.ll
setjmp2.ll [safestack] Make sure the unsafe stack pointer is popped in all cases 2016-02-02 01:03:11 +00:00
store.ll [safestack] Rewrite isAllocaSafe using SCEV. 2015-11-13 21:21:42 +00:00
struct.ll