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Merging r266824: ------------------------------------------------------------------------ r266824 | nhaehnle | 2016-04-19 14:58:17 -0700 (Tue, 19 Apr 2016) | 21 lines AMDGPU/SI: SGPR accounting in getSIProgramInfo must ignore exec_lo/hi Summary: A shader stored the live mask (initial exec mask) in an SGPR which was then spilled during register allocation. The allocator quite reasonably optimized turned the spill into v_writelane_b32 %vgpr, exec_lo, N v_writelane_b32 %vgpr, exec_hi, N+1 at the beginning of the shader, confusing the SGPR accounting. No test case, because si-sgpr-spill.ll together with an upcoming patch for WQM handling exhibits the problem. Reviewers: arsenm, tstellarAMD Subscribers: arsenm, llvm-commits Differential Revision: http://reviews.llvm.org/D19199 ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_38@271766 91177308-0d34-0410-b5e6-96231b3b80d8 Tom Stellard 4 years ago
1 changed file(s) with 2 addition(s) and 0 deletion(s). Raw diff Collapse all Expand all
365365 unsigned reg = MO.getReg();
366366 switch (reg) {
367367 case AMDGPU::EXEC:
368 case AMDGPU::EXEC_LO:
369 case AMDGPU::EXEC_HI:
368370 case AMDGPU::SCC:
369371 case AMDGPU::M0:
370372 continue;