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8 Commits

Author SHA1 Message Date
Matt Arsenault 4e972224c4 AMDGPU/GlobalISel: Refine SMRD selection rules 
Fix selecting these for volatile global loads, and ensure the loads
are constant enough.
 2020-01-04 12:40:35 -05:00
Daniel Sanders e74c5b9661 [globalisel] Rename G_GEP to G_PTR_ADD 
Summary:
G_GEP is rather poorly named. It's a simple pointer+scalar addition and
doesn't support any of the complexities of getelementptr. I therefore
propose that we rename it. There's a G_PTR_MASK so let's follow that
convention and go with G_PTR_ADD

Reviewers: volkan, aditya_nandakumar, bogner, rovka, arsenm

Subscribers: sdardis, jvesely, wdng, nhaehnle, hiraditya, jrtc27, atanasyan, arphaman, Petar.Avramovic, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D69734
 2019-11-05 10:31:17 -08:00
Matt Arsenault 85dfa82302 AMDGPU/GlobalISel: Fix crash on wide constant load with VGPR pointer 
This was ignoring the register bank of the input pointer, and
isUniformMMO seems overly aggressive.

This will now conservatively assume a VGPR in cases where the incoming
bank hasn't been determined yet (i.e. is from a loop phi).

llvm-svn: 374255
 2019-10-09 22:44:49 +00:00
Matt Arsenault bfce0c2664 AMDGPU/GlobalISel: Private loads always use VGPRs 
llvm-svn: 373414
 2019-10-02 01:02:21 +00:00
Matt Arsenault d8409b178e AMDGPU/GlobalISel: Fix RegBankSelect for unaligned, uniform constant loads 
llvm-svn: 371416
 2019-09-09 16:06:37 +00:00
Matt Arsenault 02eb308387 AMDGPU/GlobalISel: Fix regbankselect for uniform extloads 
There are no scalar extloads.

llvm-svn: 371414
 2019-09-09 16:03:45 +00:00
Matt Arsenault fdb7030117 AMDGPU/GlobalISel: Fix reg bank for uniform LDS loads 
The pointer is always a VGPR. Also fix hardcoding the pointer size to
64.

llvm-svn: 371411
 2019-09-09 15:44:16 +00:00
Tom Stellard d0ba79fe7b AMDGPU/GlobalISel: Add support for wide loads >= 256-bits 
Summary:
This adds support for the most commonly used wide load types:
<8xi32>, <16xi32>, <4xi64>, and <8xi64>

Reviewers: arsenm

Reviewed By: arsenm

Subscribers: hiraditya, kzhuravl, jvesely, wdng, nhaehnle, yaxunl, rovka, kristof.beyls, dstuttard, tpr, t-tye, volkan, Petar.Avramovic, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D57399

llvm-svn: 365586
 2019-07-10 00:22:41 +00:00