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LLVM backend for 6502
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Igor Laevsky 544d686bc0 [StatepointLowering] Reuse stack slots across basic blocks 
During statepoint lowering we can sometimes avoid spilling of the value if we know that it was already spilled for previous statepoint.
We were doing this by checking if incoming statepoint value was lowered into load from stack slot. This was working only in boundaries of one basic block.

But instead of looking at the lowered node we can look directly at the llvm-ir value and if it was gc.relocate (or some simple modification of it) look up stack slot for it's derived pointer and reuse stack slot from it. This allows us to look across basic block boundaries.

Differential Revision: http://reviews.llvm.org/D10251



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239472 91177308-0d34-0410-b5e6-96231b3b80d8
2015-06-10 12:31:53 +00:00
autoconf [bpf] enable BPF backend in autoconf build 2015-06-09 18:53:30 +00:00
bindings IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
cmake [cmake] [OCaml] Make ocamldoc targets depend on output files 2015-06-07 19:22:22 +00:00
docs [TableGen] Correct the documentation for 'foreach' in the Language Intro. 2015-06-06 00:44:42 +00:00
examples BrainF.cpp: Update CreateCall() according to r237624. 2015-05-19 06:50:19 +00:00
include Replace string GNU Triples with llvm::Triple in MCSubtargetInfo and create*MCSubtargetInfo(). NFC. 2015-06-10 12:11:26 +00:00
lib [StatepointLowering] Reuse stack slots across basic blocks 2015-06-10 12:31:53 +00:00
projects build: make libunwind a proper project 2015-04-25 01:47:39 +00:00
test [StatepointLowering] Reuse stack slots across basic blocks 2015-06-10 12:31:53 +00:00
tools LibDriver, llvm-lib: introduce. 2015-06-09 21:50:22 +00:00
unittests Removing spurious semi colons; NFC. 2015-06-09 12:03:46 +00:00
utils Replace string GNU Triples with llvm::Triple in MCSubtargetInfo and create*MCSubtargetInfo(). NFC. 2015-06-10 12:11:26 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore Ignore compile_commands.json only at the root of the tree. 2015-03-26 18:55:42 +00:00
CMakeLists.txt [bpf] make BPF backend non-experimental 2015-06-09 15:46:00 +00:00
CODE_OWNERS.TXT Added Andrey Churbanov as the owner of the OpenMP runtime library code 2015-05-05 20:17:53 +00:00
configure [bpf] enable BPF backend in autoconf build 2015-06-09 18:53:30 +00:00
CREDITS.TXT
LICENSE.TXT Update for a new year. 2015-03-12 01:25:29 +00:00
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in Deprecate in-source autotools builds 2015-05-04 02:04:54 +00:00
Makefile.rules Add support for SunOS function/data sections and associated 2015-03-03 20:54:29 +00:00
README.txt Revert test commit at revision 233535. 2015-03-30 12:39:03 +00:00

README.txt 

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