6 Commits

Author	SHA1	Message	Date
Matt Arsenault	84445dd13c	AMDGPU: Use gfx9 carry-less add/sub instructions ... llvm-svn: 319491	2017-11-30 22:51:26 +00:00
Matt Arsenault	caf0ed4d74	AMDGPU: Allow negative MUBUF vaddr for gfx9 ... GFX9 does not enable bounds checking for the resource descriptors used for private access, so it should be OK to use vaddr with a potentially negative value. llvm-svn: 319393	2017-11-30 00:52:40 +00:00
Geoff Berry	4e38e02e6f	Revert "[MachineCopyPropagation] Extend pass to do COPY source forwarding" ... This reverts commit r311038. Several buildbots are breaking, and at least one appears to be due to the forwarding of physical regs enabled by this change. Reverting while I investigate further. llvm-svn: 311062	2017-08-17 04:04:11 +00:00
Geoff Berry	87f8d25150	[MachineCopyPropagation] Extend pass to do COPY source forwarding ... This change extends MachineCopyPropagation to do COPY source forwarding. This change also extends the MachineCopyPropagation pass to be able to be run during register allocation, after physical registers have been assigned, but before the virtual registers have been re-written, which allows it to remove virtual register COPY LiveIntervals that become dead through the forwarding of all of their uses. Reviewers: qcolombet, javed.absar, MatzeB, jonpa Subscribers: jyknight, nemanjai, llvm-commits, nhaehnle, mcrosier, mgorny Differential Revision: https://reviews.llvm.org/D30751 llvm-svn: 311038	2017-08-16 20:50:01 +00:00
Matt Arsenault	23e4df6a59	AMDGPU: Detect kernarg segment pointer ... This is necessary to pass the kernarg segment pointer to callee functions. Also don't unconditionally enable for kernels. llvm-svn: 307978	2017-07-14 00:11:13 +00:00
Matt Arsenault	0774ea267a	AMDGPU: Select scratch mubuf offsets when pointer is a constant ... In call sequence setups, there may not be a frame index base and the pointer is a constant offset from the frame pointer / scratch wave offset register. llvm-svn: 301230	2017-04-24 19:40:59 +00:00