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LLVM backend for 6502
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Owen Anderson 7834c71433 Remove the type legality check from the SelectionDAGBuilder when it lowers @llvm.fmuladd to ISD::FMA nodes. 
Performing this check unilaterally prevented us from generating FMAs when the incoming IR contained illegal vector types which would eventually be legalized to underlying types that *did* support FMA.
For example, an @llvm.fmuladd on an OpenCL float16 should become a sequence of float4 FMAs, not float4 fmul+fadd's.

NOTE: Because we still call the target-specific profitability hook, individual targets can reinstate the old behavior, if desired, by simply performing the legality check inside their callback hook.  They can also perform more sophisticated legality checks, if, for example, some illegal vector types can be productively implemented as FMAs, but not others.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177820 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-23 08:26:53 +00:00
autoconf Turn anonymous type in anonymous union warning back on after cleaning up 2013-03-15 00:43:00 +00:00
bindings [python] Add markup option to disassembler 2012-12-01 21:57:30 +00:00
cmake Enable -Wnon-virtual-dtor build warning 2013-03-19 10:10:03 +00:00
docs [docs] Slight reword for precision. 2013-03-22 23:52:38 +00:00
examples Update links to "Itanium C++ ABI: Exception Handling" document 2013-01-13 15:53:09 +00:00
include Allow the register scavenger to spill multiple registers 2013-03-22 23:32:27 +00:00
lib Remove the type legality check from the SelectionDAGBuilder when it lowers @llvm.fmuladd to ISD::FMA nodes. 2013-03-23 08:26:53 +00:00
projects Print a warning message if compiler-rt can't be built because of old CMake version to make this requirement more visible to users 2013-03-05 14:43:07 +00:00
runtime Remove GCDAProfiling.c. This copy is old, the copy in compiler-rt is newer and 2013-03-07 02:03:08 +00:00
test Remove the type legality check from the SelectionDAGBuilder when it lowers @llvm.fmuladd to ISD::FMA nodes. 2013-03-23 08:26:53 +00:00
tools Remove stale comment 2013-03-19 16:04:02 +00:00
unittests Test case for graceful handling of long file names on Windows. Patch thanks to Paul Robinson! 2013-03-16 15:00:51 +00:00
utils Add TableGen ctags(1) emitter and helper script. 2013-03-21 23:40:38 +00:00
.arcconfig Add .arcconfig to the repository. Useful if someone wants to use phabricator's command line tool. 2012-12-01 12:07:58 +00:00
.gitignore
CMakeLists.txt Revert CMake version bump since we don't actually need 2.8.6 any more. 2013-02-18 11:53:37 +00:00
CODE_OWNERS.TXT Update 2013-03-18 17:47:33 +00:00
configure Turn anonymous type in anonymous union warning back on after cleaning up 2013-03-15 00:43:00 +00:00
CREDITS.TXT Update 2013-03-18 17:47:33 +00:00
LICENSE.TXT Add LICENSE.TXT covering contributions made by ARM. 2013-01-07 10:04:49 +00:00
llvm.spec.in
LLVMBuild.txt
Makefile Improved svn repo searching for 'make update' 2013-01-28 03:19:57 +00:00
Makefile.common Makefile.common: Update a description, s/Source/SOURCES/ , according to MakefileGuide.html#control-variables . 2012-12-07 01:43:23 +00:00
Makefile.config.in Turn anonymous type in anonymous union warning back on after cleaning up 2013-03-15 00:43:00 +00:00
Makefile.rules Turn anonymous type in anonymous union warning back on after cleaning up 2013-03-15 00:43:00 +00:00
README.txt Revert "Test commit" 2013-02-22 19:19:41 +00:00

README.txt 

Low Level Virtual Machine (LLVM)
================================

This directory and its subdirectories contain source code for the Low Level
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Please see the documentation provided in docs/ for further
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