Module: Mesa Branch: master Commit: 2c40846ab6f8bf161dc79ed99b51702055c6d538 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=2c40846ab6f8bf161dc79ed99b51702055c6d538
Author: Rhys Perry <[email protected]> Date: Thu Dec 3 19:55:10 2020 +0000 aco: don't assume src=lower when splitting self-intersecting copies Signed-off-by: Rhys Perry <[email protected]> Reviewed-by: Daniel Schürmann <[email protected]> Fixes: 09c584caeb2 ("aco: split self-intersecting copies instead of swapping") Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7798> --- src/amd/compiler/aco_lower_to_hw_instr.cpp | 29 +++++++++++++---------------- 1 file changed, 13 insertions(+), 16 deletions(-) diff --git a/src/amd/compiler/aco_lower_to_hw_instr.cpp b/src/amd/compiler/aco_lower_to_hw_instr.cpp index df4c0e46259..c372c8779fb 100644 --- a/src/amd/compiler/aco_lower_to_hw_instr.cpp +++ b/src/amd/compiler/aco_lower_to_hw_instr.cpp @@ -1613,31 +1613,28 @@ void handle_operands(std::map<PhysReg, copy_operation>& copy_map, lower_context* /* if this is self-intersecting, we have to split it because * self-intersecting swaps don't make sense */ - PhysReg lower = swap.def.physReg(); - PhysReg higher = swap.op.physReg(); - if (lower.reg_b > higher.reg_b) - std::swap(lower, higher); - if (higher.reg_b - lower.reg_b < (int)swap.bytes) { - unsigned offset = higher.reg_b - lower.reg_b; + PhysReg src = swap.op.physReg(), dst = swap.def.physReg(); + if (abs((int)src.reg_b - (int)dst.reg_b) < (int)swap.bytes) { + unsigned offset = abs((int)src.reg_b - (int)dst.reg_b); RegType type = swap.def.regClass().type(); copy_operation middle; - lower.reg_b += offset; - higher.reg_b += offset; + src.reg_b += offset; + dst.reg_b += offset; middle.bytes = swap.bytes - offset * 2; memcpy(middle.uses, swap.uses + offset, middle.bytes); - middle.op = Operand(lower, RegClass::get(type, middle.bytes)); - middle.def = Definition(higher, RegClass::get(type, middle.bytes)); - copy_map[higher] = middle; + middle.op = Operand(src, RegClass::get(type, middle.bytes)); + middle.def = Definition(dst, RegClass::get(type, middle.bytes)); + copy_map[dst] = middle; copy_operation end; - lower.reg_b += middle.bytes; - higher.reg_b += middle.bytes; + src.reg_b += middle.bytes; + dst.reg_b += middle.bytes; end.bytes = swap.bytes - (offset + middle.bytes); memcpy(end.uses, swap.uses + offset + middle.bytes, end.bytes); - end.op = Operand(lower, RegClass::get(type, end.bytes)); - end.def = Definition(higher, RegClass::get(type, end.bytes)); - copy_map[higher] = end; + end.op = Operand(src, RegClass::get(type, end.bytes)); + end.def = Definition(dst, RegClass::get(type, end.bytes)); + copy_map[dst] = end; memset(swap.uses + offset, 0, swap.bytes - offset); swap.bytes = offset; _______________________________________________ mesa-commit mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/mesa-commit
