Ahmed Bougacha 9c252165a7 [BasicAA] Try to disambiguate GEPs through arrays of structs into ... different fields. We can show that two GEPs off of the same (possibly multidimensional) array of structs, into different fields, can't alias. Quoting: For two GEPOperators GEP1 and GEP2, if we find that: - both GEPs begin indexing from the exact same pointer; - the last indices in both GEPs are constants, indexing into a struct; - said indices are different, hence,the pointed-to fields are different; - and both GEPs only index through arrays prior to that; this lets us determine that the struct that GEP1 indexes into and the struct that GEP2 indexes into must either precisely overlap or be completely disjoint. Because they cannot partially overlap, indexing into different non-overlapping fields of the struct will never alias. The other BasicAA::aliasGEP rules worked in some cases, but not all (for example, the i32x3 struct in the testcase). We can add this simple ad-hoc rule to complement them. rdar://19717375 Differential Revision: http://reviews.llvm.org/D7453 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228498 91177308-0d34-0410-b5e6-96231b3b80d8		2015-02-07 17:04:29 +00:00
..
Analysis	[BasicAA] Try to disambiguate GEPs through arrays of structs into	2015-02-07 17:04:29 +00:00
Assembler	IR: Allow 32-bits for lines in debug location	2015-02-06 22:50:13 +00:00
Bindings	[OCaml] Add Llvm.build_empty_phi.	2015-02-06 13:42:03 +00:00
Bitcode	Check bit widths before trying to get a type.	2015-01-30 18:13:50 +00:00
BugPoint	IR: Move MDLocation into place	2015-01-14 22:27:36 +00:00
CodeGen	[X86] Force fp stack folding tests to keep to specific domain.	2015-02-07 16:14:55 +00:00
DebugInfo	MC: Emit COFF section flags in the "proper" order	2015-02-07 08:26:40 +00:00
ExecutionEngine	[Orc] Make OrcMCJITReplacement::addObject calls transfer buffer ownership to the	2015-02-02 19:51:18 +00:00
Feature	IR: Move MDLocation into place	2015-01-14 22:27:36 +00:00
FileCheck
Instrumentation	[msan] Fix "missing origin" in atomic store.	2015-02-06 21:47:39 +00:00
Integer
JitListener	IR: Move MDLocation into place	2015-01-14 22:27:36 +00:00
Linker	Utils: Resolve cycles under distinct MDNodes	2015-02-04 19:44:34 +00:00
LTO	Introduce llvm/test/LTO/X86. LTO tests may be assumed as target-specific.	2015-01-30 10:09:26 +00:00
MC	MC: Emit COFF section flags in the "proper" order	2015-02-07 08:26:40 +00:00
Object	[ELFYAML] Provide default value 0 for YAML relocation addendum field	2015-01-29 06:56:24 +00:00
Other	[PM] Teach the module-to-function adaptor to not run function passes	2015-02-01 10:47:25 +00:00
SymbolRewriter	SymbolRewriter: allow rewriting with comdats	2015-01-27 22:57:39 +00:00
TableGen	[AVX512] Added intrinsics for VPCMPEQB and VPCMPEQW.	2014-09-30 11:32:22 +00:00
tools	Add code to llvm-objdump so the -section option with -macho will dump literal	2015-02-06 23:25:38 +00:00
Transforms	InstCombine: Combine select sequences into a single select	2015-02-06 17:49:36 +00:00
Unit
Verifier	Fix statepoint verifier tests to actually test verifier.	2015-01-30 23:18:42 +00:00
YAMLParser
.clang-format
CMakeLists.txt	Revert r224149, llvm-dsymutil was already here.	2014-12-12 21:25:07 +00:00
lit.cfg	Remove a gross usage of environment variables in MachineVerifier, replacing it with support for setting the -verify-machineinstrs flag via an environment variable in LIT.	2015-02-04 00:02:59 +00:00
lit.site.cfg.in	Reverting r226937: lit: Make MCJIT's supported arch check case insensitive	2015-01-24 01:42:44 +00:00
Makefile	[lit] Make config.llvm_lib_dir available on cmake, too.	2014-12-30 03:24:11 +00:00
Makefile.tests
TestRunner.sh