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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 | 3604d9a42197c492105b590b8bb7b99f295d804a (patch) | |
| tree | a70844de62b7d96dbec7f8b993bdaf649fc9f4ac /llvm/lib/CodeGen/MachineBasicBlock.cpp | |
| parent | b2507b3926125100c7e27f95b3abddd0c2a22f5b (diff) | |
| download | llvm-3604d9a42197c492105b590b8bb7b99f295d804a.zip llvm-3604d9a42197c492105b590b8bb7b99f295d804a.tar.gz llvm-3604d9a42197c492105b590b8bb7b99f295d804a.tar.bz2 | |
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
llvm-svn: 133253
Diffstat (limited to 'llvm/lib/CodeGen/MachineBasicBlock.cpp')
0 files changed, 0 insertions, 0 deletions