LLVM backend for 6502
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Cameron Zwarich b7cfac32f3 Add support for updating LiveIntervals to PHIElimination. If LiveIntervals are
present, it currently verifies them with the MachineVerifier, and this passed
all of the test cases in 'make check' (when accounting for existing verifier
errors). There were some assertion failures in the two-address pass, but they
also happened on code without phis and look like they are caused by different
kill flags from LiveIntervals.

The only part that doesn't work is the critical edge splitting heuristic,
because there isn't currently an efficient way to update LiveIntervals after
splitting an edge. I'll probably start by implementing the slow fallback and
test that it works before tackling the fast path for single-block ranges. The
existing code that updates LiveVariables is fairly slow as it is.

There isn't a command-line option for enabling this; instead, just edit
PHIElimination.cpp to require LiveIntervals.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174831 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-10 06:42:36 +00:00
autoconf configure: when performing a compiler feature test for a -Wno-foo flag, attempt 2013-02-08 22:55:10 +00:00
bindings
cmake CMake: Use check_symbol_exists instead of check_cxx_symbol_exists. 2013-02-08 23:17:31 +00:00
docs ReleaseNotes: Add section for R600 backend 2013-02-08 22:24:41 +00:00
examples
include ok, ok, stop fighting type punning warnings by just using a union. 2013-02-10 06:36:29 +00:00
lib Add support for updating LiveIntervals to PHIElimination. If LiveIntervals are 2013-02-10 06:42:36 +00:00
projects Set the deployment target for Apple llvmCore builds. <rdar://problem/12712431> 2013-02-05 17:29:03 +00:00
runtime
test LSR IVChain improvement. 2013-02-09 01:11:01 +00:00
tools [readobj] Fix memory leak. 2013-02-08 01:05:48 +00:00
unittests ADT: Correct APInt::getActiveWords for zero values 2013-02-07 18:36:50 +00:00
utils [lit] Add a display function for lit.Test.TestResult. 2013-02-07 21:34:34 +00:00
.arcconfig
.gitignore
CMakeLists.txt Enable AArch64 as a target built by default. 2013-02-04 12:32:21 +00:00
CODE_OWNERS.TXT
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README.txt

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