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LLVM backend for 6502
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8ccce6b8fe
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Quentin Colombet 8ccce6b8fe [PeepholeOptimizer] Take advantage of the isExtractSubreg property in the 
advanced copy optimization.

This patch is a step toward transforming:
udiv	r0, r0, r2
udiv	r1, r1, r3
vmov.32	d16[0], r0
vmov.32	d16[1], r1
vmov	r0, r1, d16
bx	lr

into:
udiv	r0, r0, r2
udiv	r1, r1, r3
bx	lr

Indeed, thanks to this patch, this optimization is able to look through
vmov r0, r1, d16
but it does not understand yet
vmov.32 d16[0], r0
vmov.32 d16[1], r1

Comming patches will fix that and update the related test case.

<rdar://problem/12702965>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216136 91177308-0d34-0410-b5e6-96231b3b80d8
2014-08-20 23:13:02 +00:00
autoconf Delete support for AuroraUX. 2014-08-14 15:15:09 +00:00
bindings [OCaml] Expose Llvm.get_operand_use. 2014-08-12 02:55:45 +00:00
cmake Disabling an MSVC warning ('var' : definition from the for loop is ignored; the definition from the enclosing scope is used) which will trigger false positives more than true positives. 2014-08-18 14:54:22 +00:00
docs Add note to LangRef about how function arguments can be unnamed and 2014-08-20 15:06:30 +00:00
examples Make it explicit that ExecutionEngine takes ownership of the modules. 2014-08-19 04:04:25 +00:00
include Add isExtractSubreg property. 2014-08-20 21:51:26 +00:00
lib [PeepholeOptimizer] Take advantage of the isExtractSubreg property in the 2014-08-20 23:13:02 +00:00
projects [cmake] Use the external project machinery for libcxxabi so that it can 2014-07-25 10:27:40 +00:00
test New InstCombine pattern: (icmp ult/ule (A + C1), C3) | (icmp ult/ule (A + C2), C3) to (icmp ult/ule ((A & ~(C1 ^ C2)) + max(C1, C2)), C3) under certain condition 2014-08-20 22:55:40 +00:00
tools Quick fix for an use after free. 2014-08-20 15:19:37 +00:00
unittests BumpPtrAllocator: don't accept 0 for the alignment parameter 2014-08-19 23:35:33 +00:00
utils Add isExtractSubreg property. 2014-08-20 21:51:26 +00:00
.arcconfig
.clang-format
.gitignore Add Polly to the ignored trees. 2014-06-25 13:13:36 +00:00
CMakeLists.txt Fix building with in-tree libc++abi on FreeBSD 2014-08-01 19:23:15 +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 Test commit access 2014-08-09 16:05:23 +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 Delete support for AuroraUX. 2014-08-14 15:15:09 +00:00
README.txt

README.txt 

Low Level Virtual Machine (LLVM)
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