Justin Holewinski 707fd44038 PTX: Adjust rounding modes
* rounding modes for fp add, mul, sub now use .rn
* float -> int rounding correctly uses .rzi not .rni
* 32bit fdiv for sm13 uses div.rn (instead of div.approx)
* 32bit fdiv for sm10 now uses div (instead of div.approx)

Approx is not IEEE 754 compatible (and should be optionally set by a flag to the backend instead). The .rn rounding modifier is the PTX default anyway, but it's better to be explicit.

All these modifiers should be available by using __fmul_rz functions for example, but support will need to be added for this in the backend.

Patch by Dan Bailey

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133253 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-17 12:12:42 +00:00
2011-06-16 16:03:13 +00:00
2011-06-09 20:11:46 +00:00
2011-06-17 12:12:42 +00:00
2011-06-17 12:12:42 +00:00
2011-06-16 16:52:24 +00:00
2011-05-31 21:54:28 +00:00
2011-06-16 22:30:41 +00:00
2011-06-12 15:26:54 +00:00
2011-05-12 17:38:08 +00:00

Low Level Virtual Machine (LLVM)
================================

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