Displaying 3 results from an estimated 3 matches for "optimizationflags".
2012 Nov 15
2
[LLVMdev] [RFC] Extend LLVM IR to express "fast-math" at a per-instruction level
On Wed, Nov 14, 2012 at 7:19 PM, Michael Ilseman <milseman at apple.com> wrote:
> I see now that it's only binary operators that have OptimizationFlags
> reserved for them in the bitcode. Adding fast-math flags for only binary ops
> is straight-forward, but adding them for other ops might require a more
> involved bitcode change.
...
> Given all that, I think it makes sense to add support for fast-math flags
> only to binary ops in...
2012 Nov 15
0
[LLVMdev] [RFC] Extend LLVM IR to express "fast-math" at a per-instruction level
...> Chris, what problem could be solved by adding extra operands to binary ops? I'm trying to avoid those sorts of modifications, as the fast-math flags could make sense applied to a variety operations, e.g. comparisons and casts.
>
I see now that it's only binary operators that have OptimizationFlags reserved for them in the bitcode. Adding fast-math flags for only binary ops is straight-forward, but adding them for other ops might require a more involved bitcode change.
I think that there might be some benefit to having flags for other kinds of ops, but those seem a bit more far-fetched and l...
2012 Nov 14
6
[LLVMdev] [RFC] Extend LLVM IR to express "fast-math" at a per-instruction level
I think I missed what problem we're trying to solve here.
I'm looking at implementing the bitcode now. I have code to successfully read and write out the LLVM IR textual formal (LLParser, etc) and set the corresponding SubclassOptionalData bits. Looking at LLVMBitCodes.h, I'm seeing where these bits reside in the bitcode, so I believe that things should be pretty straight-forward from