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Toma Tabacu 739ca842aa [mips] [IAS] Do not generate redundant move when expanding lw/sw with symbol. 
Summary:
Even though there is no 2nd register operand in the "lw/sw $8, symbol" case, we still try to find one, 
and we end up with $0, which makes us generate an unnecessary "addu $8, $8, $0" (a.k.a. "move $8, $8").

We can avoid this by checking if the 2nd register operand is different from $0, before generating the addu.

Reviewers: dsanders

Reviewed By: dsanders

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D8055

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234406 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-08 13:52:41 +00:00
..
Analysis Revert "[LoopAccesses] Allow analysis to complete in the presence of uniform stores" 2015-04-08 04:16:55 +00:00
AsmParser DebugInfo: Move DIFlag-related API from DIDescriptor to DebugNode 2015-04-07 01:21:40 +00:00
Bitcode IR: Remove MDTupleTypedArrayWrapper::operator MDTuple*() 2015-04-07 16:50:39 +00:00
CodeGen [MachineLICM] Cleanup, remove unused parameters. NFC. 2015-04-08 07:10:30 +00:00
DebugInfo Raising minimum required CMake version to 2.8.12.2. 2015-03-23 20:03:57 +00:00
ExecutionEngine [jitlistener] Remove unused code 2015-04-08 13:17:48 +00:00
Fuzzer Removing a spurious space; NFC. 2015-04-06 16:09:13 +00:00
IR DebugInfo: Remove constructors for DIRef<> 2015-04-07 18:41:54 +00:00
IRReader Use ADDITIONAL_HEADER_DIRS in all LLVM CMake projects. 2015-02-11 03:28:02 +00:00
LineEditor Use ADDITIONAL_HEADER_DIRS in all LLVM CMake projects. 2015-02-11 03:28:02 +00:00
Linker IR: Stop using DIDescriptor::is*() and auto-casting 2015-04-06 23:18:49 +00:00
LTO Remove more superfluous .str() and replace std::string concatenation with Twine. 2015-03-30 15:42:36 +00:00
MC Write the section header in the end. 2015-04-08 11:41:24 +00:00
Object Remove more superfluous .str() and replace std::string concatenation with Twine. 2015-03-30 15:42:36 +00:00
Option Remove more superfluous .str() and replace std::string concatenation with Twine. 2015-03-30 15:42:36 +00:00
Passes [PM] Fixup for r231556 where I missed a dependency on intrinsics 2015-03-07 09:08:20 +00:00
ProfileData Re-sort includes with sort-includes.py and insert raw_ostream.h where it's used. 2015-03-23 19:32:43 +00:00
Support Add boolean to PrintStackTraceOnErrorSignal to disable crash reporting. 2015-04-07 20:43:23 +00:00
TableGen Add missing includes. make_unique proliferated everywhere. 2015-03-01 21:28:53 +00:00
Target [mips] [IAS] Do not generate redundant move when expanding lw/sw with symbol. 2015-04-08 13:52:41 +00:00
Transforms [InstCombine] Refactor out OptimizeOverflowCheck. NFCI. 2015-04-08 04:27:22 +00:00
CMakeLists.txt [PM] Create a separate library for high-level pass management code. 2015-03-07 09:02:36 +00:00
LLVMBuild.txt [PM] Create a separate library for high-level pass management code. 2015-03-07 09:02:36 +00:00
Makefile [PM] Create a separate library for high-level pass management code. 2015-03-07 09:02:36 +00:00