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LLVM backend for 6502
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Evan Cheng d847124211 Thumb2 IT blocks are fairly expensive. When there are multiple selects using 
the same condition, it's important to make sure they are scheduled together
to avoid forming multiple IT blocks. I'm adding a pre-regalloc pass that forms
IT blocks early (by re-scheduling instructions and split basic blocks) to
attempt to fix this. This is not turned on by default since I am not sure this
is the right fix.

Another issue is llvm selects are modeled as two-address conditional moves.
This can be very bad when the copies before the conditional moves are not
coalesced away. Teach IT formation pass to move the copies above the IT block
(when legal) to avoid breaking the IT block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105669 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-09 01:46:50 +00:00
autoconf Fix a spello affecting platforms where the configure check fails. 2010-06-01 16:22:27 +00:00
bindings add attributes and module level asm to the ocaml bindings, 2010-04-10 17:52:58 +00:00
cmake Tell Valgrind when we modify already-executed machine code so it knows 2010-03-15 04:57:55 +00:00
docs Teach tablegen to support 'defm' inside multiclasses. 2010-06-05 02:11:52 +00:00
examples Remove the -enable-sjlj-eh option, which doesn't do anything. 2010-05-02 15:36:26 +00:00
include Reapply r105521, this time appending "LLU" to 64 bit 2010-06-08 22:51:23 +00:00
lib Thumb2 IT blocks are fairly expensive. When there are multiple selects using 2010-06-09 01:46:50 +00:00
projects Testing subversion commit access 2010-02-23 15:11:17 +00:00
runtime Delete a blank line. 2010-04-16 13:32:55 +00:00
test Reapply r105521, this time appending "LLU" to 64 bit 2010-06-08 22:51:23 +00:00
tools Plug a leak in the non-error case by removing one level of indirection. 2010-06-07 21:42:19 +00:00
unittests ADT: Add DAGDeltaAlgorithm, which is a DAG minimization algorithm built on top of the standard 'delta debugging' algorithm. 2010-06-08 16:21:22 +00:00
utils Handle instructions which need to be #defines for the purpose of capturing constant arguments 2010-06-09 01:09:00 +00:00
website
build-for-llvm-top.sh
CMakeLists.txt CMake: Add options for using static runtime on MSVC++ build. 2010-03-18 13:52:05 +00:00
configure Fix a spello affecting platforms where the configure check fails. 2010-06-01 16:22:27 +00:00
CREDITS.TXT Adding the MicroBlaze backend. 2010-02-23 19:15:24 +00:00
LICENSE.TXT
llvm.spec.in
Makefile Update for CIndex rename. 2010-04-30 23:36:47 +00:00
Makefile.common
Makefile.config.in Delete unused variables (that weren't even getting expanded). 2010-06-01 17:26:14 +00:00
Makefile.rules Makefiles: Teach LLVM's recursive makefile descent to update objdir Makefiles if 2010-06-08 20:10:13 +00:00
ModuleInfo.txt
README.txt Give packagers some advice about how to build LLVM so it's useful to 2010-02-26 00:54:42 +00:00

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