llvm-project

Commit Graph

Author	SHA1	Message	Date
Joe Nash	3ce1b9631a	[AMDGPU] Switch PostRA sched to MachineSched Use GCNHazardRecognizer in postra sched. Updated tests for the new schedules. Reviewed By: arsenm Differential Revision: https://reviews.llvm.org/D109536 Change-Id: Ia86ba2ae168f12fb34b4d8efdab491f84d936cde	2021-09-14 15:11:27 -04:00
Stanislav Mekhanoshin	381ded345b	[AMDGPU] Add S_MOV_B64_IMM_PSEUDO for wide constants This is to allow 64 bit constant rematerialization. If a constant is split into two separate moves initializing sub0 and sub1 like now RA cannot rematerizalize a 64 bit register. This gives 10-20% uplift in a set of huge apps heavily using double precession math. Fixes: SWDEV-292645 Differential Revision: https://reviews.llvm.org/D104874	2021-06-30 11:45:38 -07:00
Matt Arsenault	5aa6e246a1	AMDGPU/GlobalISel: Legalize f64 G_FFLOOR for SI Use cmp ord instead of cmp_class compared to the DAG version for the nan check, but mostly try to match the existsing pattern. I think the sign doesn't matter for fract, so we could do a little better with the source modifier matching. I think this is also still broken as in D22898, but I'm leaving it as-is for now while I don't have an SI system to test on.	2020-02-05 14:32:01 -05:00

Author

SHA1

Message

Date

Joe Nash

3ce1b9631a

[AMDGPU] Switch PostRA sched to MachineSched

Use GCNHazardRecognizer in postra sched.
Updated tests for the new schedules.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D109536

Change-Id: Ia86ba2ae168f12fb34b4d8efdab491f84d936cde

2021-09-14 15:11:27 -04:00

Stanislav Mekhanoshin

381ded345b

[AMDGPU] Add S_MOV_B64_IMM_PSEUDO for wide constants

This is to allow 64 bit constant rematerialization. If a constant
is split into two separate moves initializing sub0 and sub1 like
now RA cannot rematerizalize a 64 bit register.

This gives 10-20% uplift in a set of huge apps heavily using double
precession math.

Fixes: SWDEV-292645

Differential Revision: https://reviews.llvm.org/D104874

2021-06-30 11:45:38 -07:00

Matt Arsenault

5aa6e246a1

AMDGPU/GlobalISel: Legalize f64 G_FFLOOR for SI

Use cmp ord instead of cmp_class compared to the DAG version for the
nan check, but mostly try to match the existsing pattern.

I think the sign doesn't matter for fract, so we could do a little
better with the source modifier matching.

I think this is also still broken as in D22898, but I'm leaving it
as-is for now while I don't have an SI system to test on.

2020-02-05 14:32:01 -05:00

3 Commits