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| author | Jason Ekstrand <jason@jlekstrand.net> | 2016-01-14 12:08:57 -0800 |
|---|---|---|
| committer | Emil Velikov <emil.l.velikov@gmail.com> | 2016-01-22 11:36:43 +0000 |
| commit | 615c5a7fc8afe09cfe9a5736be9c9f15d36c1b0f (patch) | |
| tree | ce3205f2a542594c46554335ff8126f7d69dfb83 | |
| parent | 681415e7f03c99f8d51852cd0b897c0357c16a38 (diff) | |
| download | mesa-615c5a7fc8afe09cfe9a5736be9c9f15d36c1b0f.tar.gz | |
i965/vec4: Use UW type for multiply into accumulator on GEN8+
BDW adds the following restriction: "When multiplying DW x DW, the dst
cannot be accumulator."
Cc: "11.1,11.0" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
(cherry picked from commit 0a6811207fbe18d49c7ab95f93ed01f75ffcdda0)
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vec4_nir.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp index 435b80ee1f9..2d737d4c4a7 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp @@ -1017,7 +1017,11 @@ vec4_visitor::nir_emit_alu(nir_alu_instr *instr) case nir_op_umul_high: { struct brw_reg acc = retype(brw_acc_reg(8), dst.type); - emit(MUL(acc, op[0], op[1])); + if (devinfo->gen >=8) + emit(MUL(acc, op[0], retype(op[1], BRW_REGISTER_TYPE_UW))); + else + emit(MUL(acc, op[0], op[1])); + emit(MACH(dst, op[0], op[1])); break; } |