Summary:
Add some optional code to validate getInstSizeInBytes for emitted
instructions. This flushed out some issues which are fixed by this
patch:
- Streamline getInstSizeInBytes
- Properly define the VI readlane/writelane instruction as VOP3
- Fix the inline constant determination. Specifically, this change
fixes an issue where a 32-bit value of 0xffffffff was recorded
as unsigned. This is equal to -1 when restricting to a 32-bit
comparison, and an inline constant can be used.
Reviewers: arsenm, rampitec
Subscribers: kzhuravl, wdng, yaxunl, dstuttard, tpr, t-tye, llvm-commits
Differential Revision: https://reviews.llvm.org/D50629
Change-Id: Id87c3b7975839da0de8156a124b0ce98c5fb47f2
llvm-svn: 340903
Summary:
For use by LLPC SPV_AMD_shader_ballot extension.
The v_writelane instruction was already implemented for use by SGPR
spilling, but I had to add an extra dummy operand tied to the
destination, to represent that all lanes except the selected one keep
the old value of the destination register.
.ll test changes were due to schedule changes caused by that new
operand.
Differential Revision: https://reviews.llvm.org/D42838
llvm-svn: 326353
Matt Arsenault