Commit Graph

5 Commits

Author SHA1 Message Date
Stanislav Mekhanoshin 4eecf17164 [AMDGPU] Always expand ext/insertelement with divergent idx
Even though series of cmd/cndmask can produce quite a lot of
code that is still better than a loop. In case of doubles we
would even produce two loops.

Differential Revision: https://reviews.llvm.org/D80032
2020-05-20 15:51:29 -07:00
Dmitry Preobrazhensky ef92035827 [AMDGPU][MC][GFX8+] Added syntactic sugar for 'vgpr index' operand of instructions s_set_gpr_idx_on and s_set_gpr_idx_mode
See bug 39331: https://bugs.llvm.org/show_bug.cgi?id=39331

Reviewers: artem.tamazov, arsenm

Differential Revision: https://reviews.llvm.org/D58288

llvm-svn: 354969
2019-02-27 13:12:12 +00:00
Changpeng Fang 6f539294b5 AMDGPU: Don't peel of the offset if the resulting base could possibly be negative in Indirect addressing.
Summary:
  Don't peel of the offset if the resulting base could possibly be negative in Indirect addressing.
This is because the M0 field is of unsigned.

This patch achieves the similar goal as https://reviews.llvm.org/D55241, but keeps the optimization
if the base is known unsigned.

Reviewers:
  arsemn

Differential Revision:
  https://reviews.llvm.org/D55568

llvm-svn: 349951
2018-12-21 20:57:34 +00:00
Stanislav Mekhanoshin 054f8101f1 [AMDGPU] Convert insert_vector_elt into set of selects
This allows to avoid scratch use or indirect VGPR addressing for
small vectors.

Differential Revision: https://reviews.llvm.org/D54606

llvm-svn: 347231
2018-11-19 17:39:20 +00:00
Ron Lieberman cac749ac88 [AMDGPU] Add FixupVectorISel pass, currently Supports SREGs in GLOBAL LD/ST
Add a pass to fixup various vector ISel issues.
Currently we handle converting GLOBAL_{LOAD|STORE}_*
and GLOBAL_Atomic_* instructions into their _SADDR variants.
This involves feeding the sreg into the saddr field of the new instruction.

llvm-svn: 347008
2018-11-16 01:13:34 +00:00