David Blaikie eff0c67b6a Recommit r212203: Don't try to construct debug LexicalScopes hierarchy for functions that do not have top level debug information. ... Reverted by Eric Christopher (Thanks!) in r212203 after Bob Wilson reported LTO issues. Duncan Exon Smith and Aditya Nandakumar helped provide a reduced reproduction, though the failure wasn't too hard to guess, and even easier with the example to confirm. The assertion that the subprogram metadata associated with an llvm::Function matches the scope data referenced by the DbgLocs on the instructions in that function is not valid under LTO. In LTO, a C++ inline function might exist in multiple CUs and the subprogram metadata nodes will refer to the same llvm::Function. In this case, depending on the order of the CUs, the first intance of the subprogram metadata may not be the one referenced by the instructions in that function and the assertion will fail. A test case (test/DebugInfo/cross-cu-linkonce-distinct.ll) is added, the assertion removed and a comment added to explain this situation. Original commit message: If a function isn't actually in a CU's subprogram list in the debug info metadata, ignore all the DebugLocs and don't try to build scopes, track variables, etc. While this is possibly a minor optimization, it's also a correctness fix for an incoming patch that will add assertions to LexicalScopes and the debug info verifier to ensure that all scope chains lead to debug info for the current function. Fix up a few test cases that had broken/incomplete debug info that could violate this constraint. Add a test case where this occurs by design (inlining a debug-info-having function in an attribute nodebug function - we want this to work because /if/ the nodebug function is then inlined into a debug-info-having function, it should be fine (and will work fine - we just stitch the scopes up as usual), but should the inlining not happen we need to not assert fail either). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212649 91177308-0d34-0410-b5e6-96231b3b80d8		2014-07-09 21:02:41 +00:00
..
AArch64	AArch64: Better codegen for storing to __fp16.	2014-07-09 18:55:52 +00:00
ARM	ARM: properly lower dllimport'ed global values	2014-07-07 05:18:35 +00:00
CPP
Generic
Hexagon
Inputs
Mips	[mips][mips64r6] Correct select patterns that have the condition or true/false values backwards	2014-07-09 10:47:26 +00:00
MSP430
NVPTX	[NVPTX] Add reflect intrinsic (better than matching by function name)	2014-06-27 18:36:11 +00:00
PowerPC	[PowerPC] Fix testcase regression	2014-07-07 19:41:54 +00:00
R600	Add trunc (select c, a, b) -> select c (trunc a), (trunc b) combine.	2014-07-09 19:12:07 +00:00
SPARC
SystemZ
Thumb
Thumb2	ARM: Fix TPsoft for Thumb mode	2014-06-24 15:45:59 +00:00
X86	Recommit r212203: Don't try to construct debug LexicalScopes hierarchy for functions that do not have top level debug information.	2014-07-09 21:02:41 +00:00
XCore	llvm/test/CodeGen/XCore/dwarf_debug.ll: Fix not to be affected by *-win32.	2014-07-04 11:58:03 +00:00