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f91161874e
llvm-6502/lib
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Chandler Carruth f91161874e [x86] Teach the X86 backend to DAG-combine SSE2 shuffles that are 
trivially redundant.

This fixes several cases in the new vector shuffle lowering algorithm
which would generate redundant shuffle instructions for the sake of
simplicity.

I'm also deleting a testcase which was somewhat ridiculous. It was
checking for a bug in 2007 about incorrectly transforming shuffles by
looking for the string "-86" in the output of a pretty substantial
function. This test case doesn't seem to have any value at this point.

Differential Revision: http://reviews.llvm.org/D4240

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211889 91177308-0d34-0410-b5e6-96231b3b80d8
2014-06-27 11:27:52 +00:00
..
Analysis Revert "Introduce a string_ostream string builder facilty" 2014-06-26 22:52:05 +00:00
AsmParser ParseIR: don't take ownership of the MemoryBuffer 2014-06-27 04:33:58 +00:00
Bitcode IRReader: don't mark MemoryBuffers const 2014-06-27 09:19:14 +00:00
CodeGen Revert "Revert "Revert "PR20038: DebugInfo: Inlined call sites where the caller has debug info but the call itself has no debug location.""" 2014-06-27 05:34:05 +00:00
DebugInfo Revert "Introduce a string_ostream string builder facilty" 2014-06-26 22:52:05 +00:00
ExecutionEngine [RuntimeDyld, PowerPC] Fix/improve handling of TOC relocations 2014-06-27 10:32:14 +00:00
IR Revert "Revert "Revert "PR20038: DebugInfo: Inlined call sites where the caller has debug info but the call itself has no debug location.""" 2014-06-27 05:34:05 +00:00
IRReader IRReader: don't mark MemoryBuffers const 2014-06-27 09:19:14 +00:00
LineEditor
Linker Replace some assert(0)'s with llvm_unreachable. 2014-06-18 05:05:13 +00:00
LTO Revert "Introduce a string_ostream string builder facilty" 2014-06-26 22:52:05 +00:00
MC Revert "Introduce a string_ostream string builder facilty" 2014-06-26 22:52:05 +00:00
Object Revert "Introduce a string_ostream string builder facilty" 2014-06-26 22:52:05 +00:00
Option Revert "Introduce a string_ostream string builder facilty" 2014-06-26 22:52:05 +00:00
ProfileData
Support Revert "Introduce a string_ostream string builder facilty" 2014-06-26 22:52:05 +00:00
TableGen Revert "Introduce a string_ostream string builder facilty" 2014-06-26 22:52:05 +00:00
Target [x86] Teach the X86 backend to DAG-combine SSE2 shuffles that are 2014-06-27 11:27:52 +00:00
Transforms Added instruction combine to transform few more negative values addition to subtraction (Part 3) 2014-06-27 07:47:35 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile