Evan Cheng 2a135ae530 This DAG combine BRCOND transformation can look pass truncate of the operand: ...

//   %a = ...                                                                                                                                                                                  
    //   %b = and i32 %a, 2                                                                                                                                                                        
    //   %c = srl i32 %b, 1                                                                                                                                                                        
    //   brcond i32 %c ...                                                                                                                                                                         
    //                                                                                                                                                                                             
    // into                                                                                                                                                                                        
    //                                                                                                                                                                                             
    //   %a = ...                                                                                                                                                                                  
    //   %b = and i32 %a, 2                                                                                                                                                                        
    //   %c = setcc eq %b, 0                                                                                                                                                                       
    //   brcond %c ...

Make sure it restores local variable N1, which corresponds to the condition operand if it fails to match.

This apparently breaks TCE but since that backend isn't in the tree I don't have a test for it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115571 91177308-0d34-0410-b5e6-96231b3b80d8

2010-10-04 22:41:01 +00:00

..

Analysis

Don't add the operand count to SCEV uniquing data; FoldingSetNodeID

2010-10-04 17:24:08 +00:00

Archive

Revert "CMake: Get rid of LLVMLibDeps.cmake and export the libraries normally."

2010-09-13 23:59:48 +00:00

AsmParser

Pacify a noisy compiler, and sink this variable declaration closer to its uses.

2010-09-30 21:04:13 +00:00

Bitcode

Fix spelling.

2010-09-28 18:54:43 +00:00

CodeGen

This DAG combine BRCOND transformation can look pass truncate of the operand:

2010-10-04 22:41:01 +00:00

CompilerDriver

llvmc: Allow multiple output languages.

2010-09-21 14:59:42 +00:00

ExecutionEngine

Revert "CMake: Get rid of LLVMLibDeps.cmake and export the libraries normally."

2010-09-13 23:59:48 +00:00

Linker

Revert "CMake: Get rid of LLVMLibDeps.cmake and export the libraries normally."

2010-09-13 23:59:48 +00:00

MC

Incorporate suggestions by Daniel Dunbar after his review. Thanks Daniel!

2010-10-04 20:17:24 +00:00

Support

Grow BumpPtrAllocator's slab size dynamically if we allocated many slabs. This

2010-09-30 16:18:28 +00:00

System

Add an explicit initialization to work around what appears to be a valgrind

2010-09-30 23:56:49 +00:00

Target

The pshufw instruction came about in MMX2 when SSE was introduced. Don't place

2010-10-04 20:24:01 +00:00

Transforms

Now that the profitable bits of EnableFullLoadPRE have been enabled by default, rip out the remainder.

2010-10-01 20:02:55 +00:00

VMCore

The pshufw instruction came about in MMX2 when SSE was introduced. Don't place

2010-10-04 20:24:01 +00:00

Makefile

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