https://bugs.llvm.org/show_bug.cgi?id=33169
Bug ID: 33169
Summary: [mc][gfx9+]
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: AMDGPU
Assignee: unassignedb...@nondot.org
Reporter: artem.tama...@amd.com
CC: andrey.kasau...@gmail.com, artem.tama...@amd.com,
dpreobrazhen...@luxoft.com, i.am.permi...@gmail.com,
kzhuravl_...@outlook.com, llvm-bugs@lists.llvm.org,
matthew.arsena...@amd.com, nikolay.haus...@amd.com,
sam.kol...@amd.com, tony....@amd.com,
valery.pykh...@gmail.com, yaxun....@amd.com
Created attachment 18509
--> https://bugs.llvm.org/attachment.cgi?id=18509&action=edit
regressed lit tests - r301646_regr.zip
45 regressions found during AMDGPU asm weekly testing 28 Apr 2017
(300997->301646].
Examples of failing instructions:
> v_pk_fma_f16 v5, s1, v0, 0
> v_pk_fma_f16 v5, v1, 0, 0
As of r303147, such insns fail with
> error: invalid operand (violates constant bus restrictions)
Constant bus restrictions are not relevant to the constants here, because these
are not literal constants (encoded in an additional instruction word), but
inline constants.
Instructions with one constant *or* one SGPR are working fine:
> v_pk_fma_f16 v5, v1, v0, 0
> v_pk_fma_f16 v5, v1, s0, v0
Initial regression point was
> r301029 | 7995364 | kzhuravl_dev | 2017-04-21 22:57:53 +0300 (Fri, 21 Apr
> 2017)
> Reviewed at https://reviews.llvm.org/D32361.
Tested with r303147.
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