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David Blaikie 7186dd4513 DebugInfo: Ensure that all debug location scope chains from instructions within a function, lead to the function itself. 
Originally committed in r211723, reverted in r211724 due to failure
cases found and fixed (ArgumentPromotion: r211872, Inlining: r212065),
and I now believe the invariant actually holds for some reasonable
amount of code (but I'll keep an eye on the buildbots and see what
happens... ).

Original commit message:

PR20038: DebugInfo: Inlined call sites where the caller has debug info
but the call itself has no debug location.

This situation does bad things when inlined, so I've fixed Clang not to
produce inlinable call sites without locations when the caller has debug
info (in the one case where I could find that this occurred). This
updates the PR20038 test case to be what clang now produces, and readds
the assertion that had to be removed due to this bug.

I've also beefed up the debug info verifier to help diagnose these
issues in the future, and I hope to add checks to the inliner to just
assert-fail if it encounters this situation. If, in the future, we
decide we have to cope with this situation, the right thing to do is
probably to just remove all the DebugLocs from the inlined instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212085 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-01 03:11:59 +00:00
autoconf
bindings [OCaml] Documentation improvements. 2014-06-30 16:53:53 +00:00
cmake cmake: Don't do anything for LLVM_ENABLE_ASSERTIONS=OFF 2014-06-27 18:17:30 +00:00
docs Fix 'platform-specific' hyphenations 2014-06-30 18:57:16 +00:00
examples
include IR: Add a helper to check for LinkOnceODRLinkage 2014-07-01 00:30:52 +00:00
lib DebugInfo: Ensure that all debug location scope chains from instructions within a function, lead to the function itself. 2014-07-01 03:11:59 +00:00
projects
test DebugInfo: Ensure that all debug location scope chains from instructions within a function, lead to the function itself. 2014-07-01 03:11:59 +00:00
tools Add the -arch flag support to llvm-nm to select the slice out of a Mach-O 2014-06-30 18:45:23 +00:00
unittests Reverting r211950 -- it did not help resolve the -Wcomment warnings triggered in GCC. 2014-06-27 19:52:34 +00:00
utils Revert "Introduce a string_ostream string builder facilty" 2014-06-26 22:52:05 +00:00
.arcconfig
.clang-format
.gitignore Add Polly to the ignored trees. 2014-06-25 13:13:36 +00:00
CMakeLists.txt Delete utils/FileUpdate. 2014-06-23 17:58:39 +00:00
CODE_OWNERS.TXT ARM Linux support 2014-04-02 23:03:28 +00:00
configure Touch configure to force clang's config.h.in reconfiguration on the build servers 2014-06-06 10:36:38 +00:00
CREDITS.TXT Update Credits. 2014-05-29 19:59:58 +00:00
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in
Makefile.rules [Make] Fix dependencies for td.expanded 2014-06-20 19:00:41 +00:00
README.txt Trivial test commit. 2014-04-26 19:05:45 +00:00

README.txt 

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