Michael Gottesman acfb3584c5 [objc-arc-opts] In the presense of an alloca unconditionally remove RR pairs if and only if we are both KnownSafeBU/KnownSafeTD rather than just either or. ... In the presense of a block being initialized, the frontend will emit the objc_retain on the original pointer and the release on the pointer loaded from the alloca. The optimizer will through the provenance analysis realize that the two are related (albiet different), but since we only require KnownSafe in one direction, will match the inner retain on the original pointer with the guard release on the original pointer. This is fixed by ensuring that in the presense of allocas we only unconditionally remove pointers if both our retain and our release are KnownSafe (i.e. we are KnownSafe in both directions) since we must deal with the possibility that the frontend will emit what (to the optimizer) appears to be unbalanced retain/releases. An example of the miscompile is: %A = alloca retain(%x) retain(%x) <--- Inner Retain store %x, %A %y = load %A ... DO STUFF ... release(%y) call void @use(%x) release(%x) <--- Guarding Release getting optimized to: %A = alloca retain(%x) store %x, %A %y = load %A ... DO STUFF ... release(%y) call void @use(%x) rdar://13750319 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181743 91177308-0d34-0410-b5e6-96231b3b80d8		2013-05-13 23:49:42 +00:00
..
Analysis	AArch64: use MCJIT by default and enable related tests.	2013-05-06 16:51:08 +00:00
Archive
Assembler	Correct invalid debug info metadata	2013-03-12 19:04:24 +00:00
Bindings/Ocaml	Use the attribute group reference instead of the attribute directly.	2013-02-20 07:48:23 +00:00
Bitcode	Unify clang/llvm attributes for asan/tsan/msan (LLVM part)	2013-02-26 06:58:09 +00:00
BugPoint
CodeGen	PPC64: Constant initializers with dynamic relocations go in .data.rel.ro.	2013-05-13 19:34:37 +00:00
DebugInfo	Give the test from r181632 a target triple.	2013-05-10 22:14:39 +00:00
ExecutionEngine	XFAIL this test for mingw too.	2013-05-13 00:18:24 +00:00
Feature	Clarify that llvm.used can contain aliases.	2013-04-22 14:58:02 +00:00
FileCheck	Remove SMLoc paired with CHECK-NOT patterns. Not functionality change.	2013-04-25 21:31:34 +00:00
Instrumentation	Add missing colons to check lines.	2013-04-11 12:41:41 +00:00
Integer	Rewrite test/Integer tests to use FileCheck instead of grep	2013-04-08 20:18:15 +00:00
JitListener
Linker	Rewrite test/Linker tests to use FileCheck instead of grep.	2013-04-09 16:51:13 +00:00
MC	Mips assembler: Assembler macro ADDIU $rs,imm	2013-05-13 20:26:46 +00:00
Object	Change getRelocationAdditionalInfo to be ELF only.	2013-05-09 03:39:05 +00:00
Other	Attributes: Don't print trailing whitespace on the function attribute comment.	2013-04-19 11:43:21 +00:00
TableGen	Allow TableGen DAG arguments to be just a name.	2013-03-24 19:36:51 +00:00
tools	Use pointers to iterate over symbols.	2013-04-24 19:47:55 +00:00
Transforms	[objc-arc-opts] In the presense of an alloca unconditionally remove RR pairs if and only if we are both KnownSafeBU/KnownSafeTD rather than just either or.	2013-05-13 23:49:42 +00:00
Unit	Propagate path to ASan/MSan symbolizer into test environment to produce useful reports on errors.	2013-04-04 07:41:00 +00:00
Verifier	Also verify llvm.compiler_used.	2013-04-22 15:16:51 +00:00
YAMLParser
CMakeLists.txt	Add obj2yaml to test dependencies	2013-04-05 07:26:37 +00:00
lit.cfg	AArch64: use MCJIT by default and enable related tests.	2013-05-06 16:51:08 +00:00
lit.site.cfg.in	Allow host triple to be correctly overridden in CMake builds	2013-05-04 07:36:23 +00:00
Makefile	Allow host triple to be correctly overridden in CMake builds	2013-05-04 07:36:23 +00:00
Makefile.tests	Remove obsolete object file dumpers	2013-04-12 04:07:13 +00:00
TestRunner.sh