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llvm-project/llvm/test/Transforms/ObjCARC
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Michael Gottesman e29b1c1825 [objc-arc] Turn off the objc_retainBlock -> objc_retain optimization. 
The reason that I am turning off this optimization is that there is an
additional case where a block can escape that has come up. Specifically, this
occurs when a block is used in a scope outside of its current scope.

This can cause a captured retainable object pointer whose life is preserved by
the objc_retainBlock to be deallocated before the block is invoked.

An example of the code needed to trigger the bug is:

----
\#import <Foundation/Foundation.h>
int main(int argc, const char * argv[]) {
  void (^somethingToDoLater)();

  {
    NSObject *obj = [NSObject new];

    somethingToDoLater = ^{
      [obj self]; // Crashes here
    };
  }

  NSLog(@"test.");

  somethingToDoLater();
  return 0;
}
----

In the next commit, I remove all the dead code that results from this.

Once I put in the fixing commit I will bring back the tests that I deleted in
this commit.

rdar://14802782.
rdar://14868830.

llvm-svn: 189869
 		2013-09-03 22:40:54 +00:00
..
allocas.ll [objc-arc] KnownSafe does not imply that it is safe to perform code motion across CFG edges since even if it is safe to remove RR pairs, we may still be able to move a retain/release into a loop. 2013-05-24 20:44:05 +00:00
apelim.ll [objc-arc] Test cleanups. 2013-04-27 05:25:54 +00:00
arc-annotations.ll Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. 2013-07-14 01:50:49 +00:00
basic.ll [objc-arc] Move some block tests from basic.ll -> retain-block.ll and add some missing CHECK-LABELS. 2013-09-03 22:40:50 +00:00
cfg-hazards.ll Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. 2013-07-14 01:50:49 +00:00
contract-marker.ll [objc-arc] Test cleanups. 2013-04-27 05:25:54 +00:00
contract-storestrong-ivar.ll Set the "tail" flag on pattern-matched objc_storeStrong calls. 2012-01-19 19:14:36 +00:00
contract-storestrong.ll Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. 2013-07-14 01:50:49 +00:00
contract-testcases.ll Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. 2013-07-14 01:50:49 +00:00
contract.ll Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. 2013-07-14 01:50:49 +00:00
empty-block.ll Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. 2013-07-14 01:50:49 +00:00
ensure-that-exception-unwind-path-is-visited.ll Debug Info: add an identifier field to DICompositeType. 2013-08-26 22:39:55 +00:00
escape.ll Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. 2013-07-14 01:50:49 +00:00
expand.ll [objc-arc] Check that objc-arc-expand properly handles all strictly forwarding calls and does not touch calls which are not strictly forwarding (i.e. objc_retainBlock). 2013-04-21 01:57:46 +00:00
gvn.ll Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. 2013-07-14 01:50:49 +00:00
intrinsic-use-isolated.ll Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. 2013-07-14 01:50:49 +00:00
intrinsic-use.ll Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. 2013-07-14 01:50:49 +00:00
invoke.ll Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. 2013-07-14 01:50:49 +00:00
move-and-form-retain-autorelease.ll Use references to attribute groups on the call/invoke instructions. 2013-02-22 09:09:42 +00:00
move-and-merge-autorelease.ll [objc-arc] Apply the RV optimization to retains next to calls in ObjCARCContract instead of ObjCARCOpts. 2013-04-29 06:53:53 +00:00
nested.ll Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. 2013-07-14 01:50:49 +00:00
path-overflow.ll [objc-arc] Track if we encountered an additive overflow while computing {TopDown,BottomUp}PathCounts and do nothing if it occurred. 2013-08-09 23:22:27 +00:00
pointer-types.ll Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. 2013-07-14 01:50:49 +00:00
post-inlining.ll Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. 2013-07-14 01:50:49 +00:00
pr12270.ll Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2012-12-30 02:33:22 +00:00
retain-block-side-effects.ll Use references to attribute groups on the call/invoke instructions. 2013-02-22 09:09:42 +00:00
retain-not-declared.ll Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. 2013-07-14 01:42:54 +00:00
rle-s2l.ll Use references to attribute groups on the call/invoke instructions. 2013-02-22 09:09:42 +00:00
rv.ll Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. 2013-07-14 01:50:49 +00:00
split-backedge.ll Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. 2013-07-14 01:50:49 +00:00
tail-call-invariant-enforcement.ll [objc-arc] Cleaned up tail-call-invariant-enforcement.ll. 2013-04-21 02:59:44 +00:00
weak-contract.ll
…
weak-copies.ll Use references to attribute groups on the call/invoke instructions. 2013-02-22 09:09:42 +00:00
weak-dce.ll Fix replacing all the users of objc weak runtime routines 2012-05-18 22:17:29 +00:00
weak.ll Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. 2013-07-14 01:50:49 +00:00