diff options
Diffstat (limited to 'src/gallium/drivers/nv50/codegen')
| -rw-r--r-- | src/gallium/drivers/nv50/codegen/nv50_ir_ra.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/gallium/drivers/nv50/codegen/nv50_ir_ra.cpp b/src/gallium/drivers/nv50/codegen/nv50_ir_ra.cpp index 5e5255fc4f8..e0fea4b9337 100644 --- a/src/gallium/drivers/nv50/codegen/nv50_ir_ra.cpp +++ b/src/gallium/drivers/nv50/codegen/nv50_ir_ra.cpp @@ -1586,6 +1586,13 @@ RegAlloc::execFunc() unsigned int i, retries; bool ret; + if (!func->ins.empty()) { + // Insert a nop at the entry so inputs only used by the first instruction + // don't count as having an empty live range. + Instruction *nop = new_Instruction(func, OP_NOP, TYPE_NONE); + BasicBlock::get(func->cfg.getRoot())->insertHead(nop); + } + ret = insertConstr.exec(func); if (!ret) goto out; |