diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/intel/compiler/brw_vec4.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/intel/compiler/brw_vec4.cpp b/src/intel/compiler/brw_vec4.cpp index bb8b554c852..7d60665b621 100644 --- a/src/intel/compiler/brw_vec4.cpp +++ b/src/intel/compiler/brw_vec4.cpp @@ -1154,6 +1154,12 @@ vec4_instruction::can_reswizzle(const struct gen_device_info *devinfo, if (devinfo->gen == 6 && is_math() && swizzle != BRW_SWIZZLE_XYZW) return false; + /* If we write to the flag register changing the swizzle would change + * what channels are written to the flag register. + */ + if (writes_flag()) + return false; + /* We can't swizzle implicit accumulator access. We'd have to * reswizzle the producer of the accumulator value in addition * to the consumer (i.e. both MUL and MACH). Just skip this. |