radeonsi: get rid of get_interp_param

Replace by a simple LLVMGetParam, since ctx->no_prolog is always false.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c
index 8bd8c8077db44fa42281a5d552a850a71e5d7707..f3b94d7ff76fc3b8243251695a52cd3b32700012 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -1300,56 +1300,6 @@ static void interp_fs_input(struct si_shader_context *ctx,
        }
 }
 
-/* LLVMGetParam with bc_optimize resolved. */
-static LLVMValueRef get_interp_param(struct si_shader_context *ctx,
-                                    int interp_param_idx)
-{
-       LLVMBuilderRef builder = ctx->gallivm.builder;
-       LLVMValueRef main_fn = ctx->main_fn;
-       LLVMValueRef param = NULL;
-
-       /* Handle PRIM_MASK[31] (bc_optimize). */
-       if (ctx->no_prolog &&
-           ((ctx->shader->key.ps.prolog.bc_optimize_for_persp &&
-             interp_param_idx == SI_PARAM_PERSP_CENTROID) ||
-            (ctx->shader->key.ps.prolog.bc_optimize_for_linear &&
-             interp_param_idx == SI_PARAM_LINEAR_CENTROID))) {
-               /* The shader should do: if (PRIM_MASK[31]) CENTROID = CENTER;
-                * The hw doesn't compute CENTROID if the whole wave only
-                * contains fully-covered quads.
-                */
-               LLVMValueRef bc_optimize =
-                       LLVMGetParam(main_fn, SI_PARAM_PRIM_MASK);
-               bc_optimize = LLVMBuildLShr(builder,
-                                           bc_optimize,
-                                           LLVMConstInt(ctx->i32, 31, 0), "");
-               bc_optimize = LLVMBuildTrunc(builder, bc_optimize, ctx->i1, "");
-
-               if (ctx->shader->key.ps.prolog.bc_optimize_for_persp &&
-                   interp_param_idx == SI_PARAM_PERSP_CENTROID) {
-                       param = LLVMBuildSelect(builder, bc_optimize,
-                                               LLVMGetParam(main_fn,
-                                                            SI_PARAM_PERSP_CENTER),
-                                               LLVMGetParam(main_fn,
-                                                            SI_PARAM_PERSP_CENTROID),
-                                               "");
-               }
-               if (ctx->shader->key.ps.prolog.bc_optimize_for_linear &&
-                   interp_param_idx == SI_PARAM_LINEAR_CENTROID) {
-                       param = LLVMBuildSelect(builder, bc_optimize,
-                                               LLVMGetParam(main_fn,
-                                                            SI_PARAM_LINEAR_CENTER),
-                                               LLVMGetParam(main_fn,
-                                                            SI_PARAM_LINEAR_CENTROID),
-                                               "");
-               }
-       }
-
-       if (!param)
-               param = LLVMGetParam(main_fn, interp_param_idx);
-       return param;
-}
-
 static void declare_input_fs(
        struct si_shader_context *radeon_bld,
        unsigned input_index,
@@ -1385,7 +1335,7 @@ static void declare_input_fs(
        if (interp_param_idx == -1)
                return;
        else if (interp_param_idx) {
-               interp_param = get_interp_param(ctx, interp_param_idx);
+               interp_param = LLVMGetParam(ctx->main_fn, interp_param_idx);
        }
 
        if (decl->Semantic.Name == TGSI_SEMANTIC_COLOR &&
@@ -5131,7 +5081,7 @@ static void build_interp_intrinsic(const struct lp_build_tgsi_action *action,
        if (interp_param_idx == -1)
                return;
        else if (interp_param_idx)
-               interp_param = get_interp_param(ctx, interp_param_idx);
+               interp_param = LLVMGetParam(ctx->main_fn, interp_param_idx);
        else
                interp_param = NULL;