Module: Mesa Branch: master Commit: d28e285d41bbb482384fb2174c92b9f63aa1175f URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=d28e285d41bbb482384fb2174c92b9f63aa1175f
Author: Eric Anholt <[email protected]> Date: Fri Jun 7 17:58:18 2013 -0700 i965/vs: Allow copy propagation into MUL/MACH. This is a trivial port of 1d6ead38042cc0d1e667d8ff55937c1e32d108b1 from the FS. No significant performance difference on trex (misplaced the data, but it was about n=20). Reviewed-by: Kenneth Graunke <[email protected]> Reviewed-by: Matt Turner <[email protected]> --- .../drivers/dri/i965/brw_vec4_copy_propagation.cpp | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-) diff --git a/src/mesa/drivers/dri/i965/brw_vec4_copy_propagation.cpp b/src/mesa/drivers/dri/i965/brw_vec4_copy_propagation.cpp index 1a667eb..64f6ccc 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4_copy_propagation.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4_copy_propagation.cpp @@ -95,6 +95,7 @@ try_constant_propagation(vec4_instruction *inst, int arg, src_reg *values[4]) inst->src[arg] = value; return true; + case BRW_OPCODE_MACH: case BRW_OPCODE_MUL: case BRW_OPCODE_ADD: if (arg == 1) { @@ -102,9 +103,10 @@ try_constant_propagation(vec4_instruction *inst, int arg, src_reg *values[4]) return true; } else if (arg == 0 && inst->src[1].file != IMM) { /* Fit this constant in by commuting the operands. Exception: we - * can't do this for 32-bit integer MUL because it's asymmetric. + * can't do this for 32-bit integer MUL/MACH because it's asymmetric. */ - if (inst->opcode == BRW_OPCODE_MUL && + if ((inst->opcode == BRW_OPCODE_MUL || + inst->opcode == BRW_OPCODE_MACH) && (inst->src[1].type == BRW_REGISTER_TYPE_D || inst->src[1].type == BRW_REGISTER_TYPE_UD)) break; _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
