radeonsi: emit LDEXP opcode

The LLVM intrinsic has existed for a long time. The current name was
established in LLVM 3.9.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>

diff --git a/src/gallium/drivers/radeonsi/si_pipe.c b/src/gallium/drivers/radeonsi/si_pipe.c
index c82aff2..9a5b789 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_pipe.c
+++ b/src/gallium/drivers/radeonsi/si_pipe.c
@@ -748,6 +748,7 @@ static int si_get_shader_param(struct pipe_screen* pscreen,
        case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
        case PIPE_SHADER_CAP_TGSI_SKIP_MERGE_REGISTERS:
        case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
+       case PIPE_SHADER_CAP_TGSI_LDEXP_SUPPORTED:
                return 1;
 
        case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
@@ -768,7 +769,6 @@ static int si_get_shader_param(struct pipe_screen* pscreen,
        case PIPE_SHADER_CAP_SUBROUTINES:
        case PIPE_SHADER_CAP_SUPPORTED_IRS:
        case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
-       case PIPE_SHADER_CAP_TGSI_LDEXP_SUPPORTED:
                return 0;
        }
        return 0;

diff --git a/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c b/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c
index 234fd7f..ba7ec4f 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c
+++ b/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c
@@ -800,6 +800,8 @@ void si_shader_context_init_alu(struct lp_build_tgsi_context *bld_base)
        bld_base->op_actions[TGSI_OPCODE_KILL_IF].fetch_args = kill_if_fetch_args;
        bld_base->op_actions[TGSI_OPCODE_KILL_IF].emit = kil_emit;
        bld_base->op_actions[TGSI_OPCODE_KILL].emit = kil_emit;
+       bld_base->op_actions[TGSI_OPCODE_LDEXP].emit = build_tgsi_intrinsic_nomem;
+       bld_base->op_actions[TGSI_OPCODE_LDEXP].intr_name = "llvm.amdgcn.ldexp.f32";
        bld_base->op_actions[TGSI_OPCODE_LSB].emit = emit_lsb;
        bld_base->op_actions[TGSI_OPCODE_LG2].emit = build_tgsi_intrinsic_nomem;
        bld_base->op_actions[TGSI_OPCODE_LG2].intr_name = "llvm.log2.f32";