Shuxin Yang 1cd1d02141 Disable some unsafe-fp-math DAG-combine transformation after legalization.
For instance, following transformation will be disabled:
    x + x + x => 3.0f * x;

The problem of these transformations is that it introduces a FP constant, which
following Instruction-Selection pass cannot handle.

Reviewed by Nadav, thanks a lot!

rdar://13445387


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177933 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-25 22:52:29 +00:00
2013-03-25 18:59:43 +00:00
2012-10-09 23:48:34 +00:00
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2013-03-18 17:47:33 +00:00
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Low Level Virtual Machine (LLVM)
================================

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