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LLVM backend for 6502
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3008bee7d9
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Patrik Hagglund 3008bee7d9 [MachineSinking] Conservatively clear kill flags after coalescing. 
This solves the problem of having a kill flag inside a loop
with a definition of the register prior to the loop:

%vreg368<def> ...

Inside loop:

        %vreg520<def> = COPY %vreg368
        %vreg568<def,tied1> = add %vreg341<tied0>, %vreg520<kill>

=> was coalesced into =>

        %vreg568<def,tied1> = add %vreg341<tied0>, %vreg368<kill>

MachineVerifier then complained:
*** Bad machine code: Virtual register killed in block, but needed live out. ***

The kill flag for %vreg368 is incorrect, and is cleared by this patch.

This is similar to the clearing done at the end of
MachineSinking::SinkInstruction().

Patch provided by Jonas Paulsson.

Reviewed by Quentin Colombet and Juergen Ributzka.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217427 91177308-0d34-0410-b5e6-96231b3b80d8
2014-09-09 07:47:00 +00:00
autoconf Delete support for AuroraUX. 2014-08-14 15:15:09 +00:00
bindings Reinstate "Nuke the old JIT." 2014-09-02 22:28:02 +00:00
cmake [CMake] Add -fno-sanitize=function to UBSan bootstrap 2014-09-05 01:17:30 +00:00
docs Fix type error in insertvalue example in LangRef. %agg1 is of type {i32, 2014-09-08 21:19:46 +00:00
examples Fix configure and make build of llvm examples. 2014-09-03 13:12:16 +00:00
include llvm-cov: Combine two types that were nearly identical (NFC) 2014-09-09 05:32:18 +00:00
lib [MachineSinking] Conservatively clear kill flags after coalescing. 2014-09-09 07:47:00 +00:00
projects [cmake] Use the external project machinery for libcxxabi so that it can 2014-07-25 10:27:40 +00:00
test Set trunc store action to Expand for all X86 targets. 2014-09-09 01:13:36 +00:00
tools llvm-cov: Combine two types that were nearly identical (NFC) 2014-09-09 05:32:18 +00:00
unittests Try to unflake AllocatorTest.TestAlignmentPastSlab 2014-09-07 05:14:29 +00:00
utils [x86] Fix a pretty horrible bug and inconsistency in the x86 asm 2014-09-06 10:00:01 +00:00
.arcconfig
.clang-format
.clang-tidy Add .clang-tidy configuration file to provide LLVM-optimized defaults for 2014-09-08 13:30:00 +00:00
.gitignore Add Polly to the ignored trees. 2014-06-25 13:13:36 +00:00
CMakeLists.txt Enabling LLVM & Clang to be cross-compiled using CMake from a single configuration command line 2014-09-03 23:21:18 +00:00
CODE_OWNERS.TXT Add a sentence that all entries should include an email address. 2014-08-04 19:33:25 +00:00
configure Delete support for AuroraUX. 2014-08-14 15:15:09 +00:00
CREDITS.TXT Rise from the dead and update personal info 2014-08-25 17:51:04 +00:00
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in Track clang r213171 2014-07-16 16:50:34 +00:00
Makefile.rules Reinstate "Nuke the old JIT." 2014-09-02 22:28:02 +00:00
README.txt

README.txt 

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