diff options
| -rw-r--r-- | src/intel/compiler/brw_fs.cpp | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/src/intel/compiler/brw_fs.cpp b/src/intel/compiler/brw_fs.cpp index ab9e95524c3..f3bb3835d9b 100644 --- a/src/intel/compiler/brw_fs.cpp +++ b/src/intel/compiler/brw_fs.cpp @@ -857,6 +857,24 @@ namespace { const unsigned end = start + inst->exec_size; return ((1 << DIV_ROUND_UP(end, 8)) - 1) & ~((1 << (start / 8)) - 1); } + + unsigned + bit_mask(unsigned n) + { + return (n >= CHAR_BIT * sizeof(bit_mask(n)) ? ~0u : (1u << n) - 1); + } + + unsigned + flag_mask(const fs_reg &r, unsigned sz) + { + if (r.file == ARF) { + const unsigned start = (r.nr - BRW_ARF_FLAG) * 4 + r.subnr; + const unsigned end = start + sz; + return bit_mask(end) & ~bit_mask(start); + } else { + return 0; + } + } } unsigned @@ -882,16 +900,13 @@ fs_inst::flags_read(const gen_device_info *devinfo) const unsigned fs_inst::flags_written() const { - /* XXX - This doesn't consider explicit uses of the flag register as - * destination region. - */ if ((conditional_mod && (opcode != BRW_OPCODE_SEL && opcode != BRW_OPCODE_IF && opcode != BRW_OPCODE_WHILE)) || opcode == FS_OPCODE_MOV_DISPATCH_TO_FLAGS) { return flag_mask(this); } else { - return 0; + return flag_mask(dst, size_written); } } |