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| author | Justin Holewinski <justin.holewinski@gmail.com> | 2011-06-17 12:12:42 +0000 |
|---|---|---|
| committer | Justin Holewinski <justin.holewinski@gmail.com> | 2011-06-17 12:12:42 +0000 |
| commit | 707fd44038edf9ec0d3fe7b99d51e7c71e36f9d0 (patch) | |
| tree | 85388ccb43c10f0f9e8bd902b7a794e2071fd943 /lib/VMCore/Function.cpp | |
| parent | f1b7e94add71403c52ae00faf7b0528b76fb6e55 (diff) | |
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
Diffstat (limited to 'lib/VMCore/Function.cpp')
0 files changed, 0 insertions, 0 deletions