llvm-6502/lib
Hal Finkel 5e908e3bab Track multiple stores per object when using AA in ScheduleDAGInstrs
When using AA to break false chain dependencies, we need to track multiple
stores per object in ScheduleDAGInstrs. Historically, we tracked potential alias
chains at the object level, and so all loads of an object would retain
dependencies on any store to that object. With AA, however, this is not
sufficient: non-overlapping stores and loads to the same object all need to be
tested for dependencies separately, we cannot only test all loads to an object
against only the last store (see PR18497 for an explicit example).

To mitigate any unwelcome compile-time impact when not using AA, only one store
is kept in the list per object when not using AA.

This, along with a stack coloring change to come shortly, will provide a test
case, fix PR18497 (and allow LLVM to compile itself using -enable-aa-sched-mi
on x86-64).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199657 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-20 14:03:02 +00:00
..
Analysis [PM] Make the verifier work independently of any pass manager. 2014-01-19 02:22:18 +00:00
AsmParser Add an inalloca flag to allocas 2014-01-17 23:58:17 +00:00
Bitcode Make parseBitcodeFile return an ErrorOr<Module *>. 2014-01-15 01:08:23 +00:00
CodeGen Track multiple stores per object when using AA in ScheduleDAGInstrs 2014-01-20 14:03:02 +00:00
DebugInfo llvm-dwarfdump: type unit dwo support 2014-01-09 05:08:24 +00:00
ExecutionEngine Attempt to fix the MSVC build. 2014-01-16 05:09:32 +00:00
IR [PM] Wire up the Verifier for the new pass manager and connect it to the 2014-01-20 11:34:08 +00:00
IRReader Make parseBitcodeFile return an ErrorOr<Module *>. 2014-01-15 01:08:23 +00:00
Linker Reapply r194218 with fix: 2014-01-16 06:29:36 +00:00
LTO [LTO] Add a hook to map LLVM diagnostics into the clients of LTO. 2014-01-15 22:04:35 +00:00
MC ARM: add tlsldo relocation 2014-01-20 11:00:40 +00:00
Object 80-column. 2014-01-17 22:11:27 +00:00
Option Avoid buffer copies when a Twine already is a StringRef. 2013-12-03 18:18:28 +00:00
Support [x86] Support i386-*-*-code16 triple for emitting 16-bit code 2014-01-20 12:02:25 +00:00
TableGen [TableGen] Correctly generate implicit anonymous prototype defs in multiclasses 2014-01-02 20:47:09 +00:00
Target [x86] Fix disassembly of MOV16ao16 et al. 2014-01-20 12:02:53 +00:00
Transforms Fix all the remaining lost-fast-math-flags bugs I've been able to find. The most important of these are cases in the generic logic for combining BinaryOperators. 2014-01-20 07:44:53 +00:00
CMakeLists.txt Move LTO support library to a component, allowing it to be tested 2013-09-24 23:52:22 +00:00
LLVMBuild.txt Move LTO support library to a component, allowing it to be tested 2013-09-24 23:52:22 +00:00
Makefile Reformat Makefile. No other changes. 2013-10-30 04:03:03 +00:00