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llvm-mirror/lib/Transforms
Evan Cheng c7ed1b9258 Speculatively execute a block when the the block is the then part of a triangle shape and it contains a single, side effect free, cheap instruction. The branch is eliminated by adding a select instruction. i.e.
Turn                                                                                                                                                                                                       
BB:                                                                                                                                                                                                        
    %t1 = icmp                                                                                                                                                                                             
    br i1 %t1, label %BB1, label %BB2                                                                                                                                                                      
BB1:                                                                                                                                                                                                       
    %t3 = add %t2, c                                                                                                                                                                                       
    br label BB2                                                                                                                                                                                           
BB2:                                                                                                                                                                                                       
=>                                                                                                                                                                                                         
BB:                                                                                                                                                                                                        
    %t1 = icmp                                                                                                                                                                                             
    %t4 = add %t2, c                                                                                                                                                                                       
    %t3 = select i1 %t1, %t2, %t3

llvm-svn: 52073
2008-06-07 08:52:29 +00:00
..
Hello Clean up the use of static and anonymous namespaces. This turned up 2008-05-13 00:00:25 +00:00
Instrumentation Tidy up BasicBlock::getFirstNonPHI, and change a bunch of places to 2008-05-23 21:05:58 +00:00
IPO Let StructRetPromotion check if all if its users are really calls or invokesn, 2008-06-05 08:57:20 +00:00
Scalar Wrap MVT::ValueType in a struct to get type safety 2008-06-06 12:08:01 +00:00
Utils Speculatively execute a block when the the block is the then part of a triangle shape and it contains a single, side effect free, cheap instruction. The branch is eliminated by adding a select instruction. i.e. 2008-06-07 08:52:29 +00:00
Makefile remove attribution from lib Makefiles. 2007-12-29 20:09:26 +00:00