Re: [PATCH 8/17][ARM] Add VFP FP16 arithmetic instructions.

On Wed, 3 Aug 2016, Ramana Radhakrishnan wrote: > Joseph, do you have any opinions on whether we should be extending the > standard pattern names or not for btrunc, ceil, round, floor, > nearbyint, rint, lround, lfloor and lceil optabs for the HFmode > quantities ? If the semantics match a

Re: [PATCH 8/17][ARM] Add VFP FP16 arithmetic instructions.

On Wed, Aug 03, 2016 at 12:52:42PM +0100, Ramana Radhakrishnan wrote: > On Thu, Jul 28, 2016 at 12:37 PM, Ramana Radhakrishnan > wrote: > > On Mon, Jul 4, 2016 at 3:02 PM, Matthew Wahab > > wrote: > >> On 19/05/16 15:54, Matthew Wahab wrote:

Re: [PATCH 8/17][ARM] Add VFP FP16 arithmetic instructions.

On 03/08/16 12:52, Ramana Radhakrishnan wrote: On Thu, Jul 28, 2016 at 12:37 PM, Ramana Radhakrishnan wrote: On Mon, Jul 4, 2016 at 3:02 PM, Matthew Wahab wrote: On 19/05/16 15:54, Matthew Wahab wrote: On 18/05/16 16:20, Joseph Myers

Re: [PATCH 8/17][ARM] Add VFP FP16 arithmetic instructions.

On Thu, Jul 28, 2016 at 12:37 PM, Ramana Radhakrishnan wrote: > On Mon, Jul 4, 2016 at 3:02 PM, Matthew Wahab > wrote: >> On 19/05/16 15:54, Matthew Wahab wrote: >>> On 18/05/16 16:20, Joseph Myers wrote: On Wed, 18 May 2016, Matthew

Re: [PATCH 8/17][ARM] Add VFP FP16 arithmetic instructions.

On Mon, Jul 4, 2016 at 3:02 PM, Matthew Wahab wrote: > On 19/05/16 15:54, Matthew Wahab wrote: >> On 18/05/16 16:20, Joseph Myers wrote: >>> On Wed, 18 May 2016, Matthew Wahab wrote: >>> >>> In short: instructions for direct HFmode arithmetic should be described >>>

Re: [PATCH 8/17][ARM] Add VFP FP16 arithmetic instructions.

Matthew Wahab <matthew.wa...@arm.com> Date: Thu, 7 Apr 2016 14:49:17 +0100 Subject: [PATCH 08/17] [PATCH 8/17][ARM] Add VFP FP16 arithmetic instructions. 2016-07-04 Matthew Wahab <matthew.wa...@arm.com> * config/arm/iterators.md (Code iterators): Fix some white-space in the com

Re: [PATCH 8/17][ARM] Add VFP FP16 arithmetic instructions.

On 18/05/16 16:20, Joseph Myers wrote: On Wed, 18 May 2016, Matthew Wahab wrote: AArch64 follows IEEE-754 but ARM (AArch32) adds restrictions like flush-to-zero that could affect the outcome of a calculation. The result of a float computation on two values immediately promoted from fp16

Re: [PATCH 8/17][ARM] Add VFP FP16 arithmetic instructions.

On Wed, 18 May 2016, Matthew Wahab wrote: > AArch64 follows IEEE-754 but ARM (AArch32) adds restrictions like > flush-to-zero that could affect the outcome of a calculation. The result of a float computation on two values immediately promoted from fp16 cannot be within the subnormal range for

Re: [PATCH 8/17][ARM] Add VFP FP16 arithmetic instructions.

On 18/05/16 01:51, Joseph Myers wrote: On Tue, 17 May 2016, Matthew Wahab wrote: In most cases the instructions are added using non-standard pattern names. This is to force operations on __fp16 values to be done, by conversion, using the single-precision instructions. The exceptions are the

Re: [PATCH 8/17][ARM] Add VFP FP16 arithmetic instructions.

On Wed, 18 May 2016, Joseph Myers wrote: > But why do you need to force that? If the instructions follow IEEE > semantics including for exceptions and rounding modes, then X OP Y > computed directly with binary16 arithmetic has the same value as results > from promoting to binary32, doing

Re: [PATCH 8/17][ARM] Add VFP FP16 arithmetic instructions.

On Tue, 17 May 2016, Matthew Wahab wrote: > In most cases the instructions are added using non-standard pattern > names. This is to force operations on __fp16 values to be done, by > conversion, using the single-precision instructions. The exceptions are > the precision preserving operations ABS

[PATCH 8/17][ARM] Add VFP FP16 arithmetic instructions.

r 2016 14:49:17 +0100 Subject: [PATCH 08/17] [PATCH 8/17][ARM] Add VFP FP16 arithmetic instructions. 2016-05-17 Matthew Wahab <matthew.wa...@arm.com> * config/arm/iterators.md (Code iterators): Fix some white-space in the comments. (GLTE): New. (ABSNEG): New (FCVT): Moved from v