diff options
| author | Antia Puentes <[email protected]> | 2015-04-17 17:58:35 +0200 |
|---|---|---|
| committer | Jason Ekstrand <[email protected]> | 2015-08-03 09:40:49 -0700 |
| commit | b9c41affcf67f30d7f6c74c17ea34bc42756d56d (patch) | |
| tree | 88a29ec234ae2beb2d7c3cc19046eb0ab74d5467 /src/mesa | |
| parent | dae6025e8efdfb759458a3243c8cd1588f485135 (diff) | |
i965/nir: Add utility method for comparisons
This method returns the brw_conditional_mod value used when emitting
comparative ALU operations.
It could be moved to brw_nir in the future to reuse it in fs_nir backend.
Reviewed-by: Jason Ekstrand <[email protected]>
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vec4_nir.cpp | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp index 6ae387a8852..77df2842e6e 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp @@ -652,6 +652,45 @@ brw_swizzle_for_nir_swizzle(uint8_t swizzle[4]) return BRW_SWIZZLE4(swizzle[0], swizzle[1], swizzle[2], swizzle[3]); } +static enum brw_conditional_mod +brw_conditional_for_nir_comparison(nir_op op) +{ + switch (op) { + case nir_op_flt: + case nir_op_ilt: + case nir_op_ult: + return BRW_CONDITIONAL_L; + + case nir_op_fge: + case nir_op_ige: + case nir_op_uge: + return BRW_CONDITIONAL_GE; + + case nir_op_feq: + case nir_op_ieq: + case nir_op_ball_fequal2: + case nir_op_ball_iequal2: + case nir_op_ball_fequal3: + case nir_op_ball_iequal3: + case nir_op_ball_fequal4: + case nir_op_ball_iequal4: + return BRW_CONDITIONAL_Z; + + case nir_op_fne: + case nir_op_ine: + case nir_op_bany_fnequal2: + case nir_op_bany_inequal2: + case nir_op_bany_fnequal3: + case nir_op_bany_inequal3: + case nir_op_bany_fnequal4: + case nir_op_bany_inequal4: + return BRW_CONDITIONAL_NZ; + + default: + unreachable("not reached: bad operation for comparison"); + } +} + void vec4_visitor::nir_emit_alu(nir_alu_instr *instr) { |