From: Marek Olšák <marek.ol...@amd.com>

so that we can put multiple different TGSI shaders into one module.
---
 src/gallium/drivers/radeonsi/si_shader.c           | 15 ++--
 src/gallium/drivers/radeonsi/si_shader_internal.h  |  7 +-
 .../drivers/radeonsi/si_shader_tgsi_setup.c        | 93 ++++++++++++++--------
 3 files changed, 72 insertions(+), 43 deletions(-)

diff --git a/src/gallium/drivers/radeonsi/si_shader.c 
b/src/gallium/drivers/radeonsi/si_shader.c
index 0afa888..fced3c6 100644
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -55,21 +55,20 @@ static const char *scratch_rsrc_dword1_symbol =
 struct si_shader_output_values
 {
        LLVMValueRef values[4];
        unsigned semantic_name;
        unsigned semantic_index;
        ubyte vertex_stream[4];
 };
 
 static void si_init_shader_ctx(struct si_shader_context *ctx,
                               struct si_screen *sscreen,
-                              struct si_shader *shader,
                               LLVMTargetMachineRef tm);
 
 static void si_llvm_emit_barrier(const struct lp_build_tgsi_action *action,
                                 struct lp_build_tgsi_context *bld_base,
                                 struct lp_build_emit_data *emit_data);
 
 static void si_dump_shader_key(unsigned shader, struct si_shader_key *key,
                               FILE *f);
 
 static unsigned llvm_get_type_size(LLVMTypeRef type);
@@ -6514,21 +6513,22 @@ si_generate_gs_copy_shader(struct si_screen *sscreen,
        shader = CALLOC_STRUCT(si_shader);
        if (!shader) {
                FREE(outputs);
                return NULL;
        }
 
 
        shader->selector = gs_selector;
        shader->is_gs_copy_shader = true;
 
-       si_init_shader_ctx(&ctx, sscreen, shader, tm);
+       si_init_shader_ctx(&ctx, sscreen, tm);
+       ctx.shader = shader;
        ctx.type = PIPE_SHADER_VERTEX;
 
        builder = gallivm->builder;
 
        create_function(&ctx);
        preload_ring_buffers(&ctx);
 
        LLVMValueRef voffset =
                lp_build_mul_imm(uint, LLVMGetParam(ctx.main_fn,
                                                    ctx.param_vertex_id), 4);
@@ -6713,29 +6713,26 @@ static void si_dump_shader_key(unsigned shader, struct 
si_shader_key *key,
             shader == PIPE_SHADER_VERTEX) &&
            !key->as_es && !key->as_ls) {
                fprintf(f, "  opt.hw_vs.kill_outputs = 0x%"PRIx64"\n", 
key->opt.hw_vs.kill_outputs);
                fprintf(f, "  opt.hw_vs.kill_outputs2 = 0x%x\n", 
key->opt.hw_vs.kill_outputs2);
                fprintf(f, "  opt.hw_vs.clip_disable = %u\n", 
key->opt.hw_vs.clip_disable);
        }
 }
 
 static void si_init_shader_ctx(struct si_shader_context *ctx,
                               struct si_screen *sscreen,
-                              struct si_shader *shader,
                               LLVMTargetMachineRef tm)
 {
        struct lp_build_tgsi_context *bld_base;
        struct lp_build_tgsi_action tmpl = {};
 
-       si_llvm_context_init(ctx, sscreen, shader, tm,
-               (shader && shader->selector) ? &shader->selector->info : NULL,
-               (shader && shader->selector) ? shader->selector->tokens : NULL);
+       si_llvm_context_init(ctx, sscreen, tm);
 
        bld_base = &ctx->bld_base;
        bld_base->emit_fetch_funcs[TGSI_FILE_CONSTANT] = fetch_constant;
 
        bld_base->op_actions[TGSI_OPCODE_INTERP_CENTROID] = interp_action;
        bld_base->op_actions[TGSI_OPCODE_INTERP_SAMPLE] = interp_action;
        bld_base->op_actions[TGSI_OPCODE_INTERP_OFFSET] = interp_action;
 
        bld_base->op_actions[TGSI_OPCODE_TEX] = tex_action;
        bld_base->op_actions[TGSI_OPCODE_TEX_LZ] = tex_action;
@@ -7526,21 +7523,22 @@ int si_compile_tgsi_shader(struct si_screen *sscreen,
        int r = -1;
 
        /* Dump TGSI code before doing TGSI->LLVM conversion in case the
         * conversion fails. */
        if (r600_can_dump_shader(&sscreen->b, sel->info.processor) &&
            !(sscreen->b.debug_flags & DBG_NO_TGSI)) {
                tgsi_dump(sel->tokens, 0);
                si_dump_streamout(&sel->so);
        }
 
-       si_init_shader_ctx(&ctx, sscreen, shader, tm);
+       si_init_shader_ctx(&ctx, sscreen, tm);
+       si_llvm_context_set_tgsi(&ctx, shader);
        ctx.separate_prolog = !is_monolithic;
 
        memset(shader->info.vs_output_param_offset, EXP_PARAM_UNDEFINED,
               sizeof(shader->info.vs_output_param_offset));
 
        shader->info.uses_instanceid = sel->info.uses_instanceid;
 
        ctx.load_system_value = declare_system_value;
 
        if (!si_compile_tgsi_main(&ctx, shader)) {
@@ -7774,21 +7772,22 @@ si_get_shader_part(struct si_screen *sscreen,
        }
 
        /* Compile a new one. */
        result = CALLOC_STRUCT(si_shader_part);
        result->key = *key;
 
        struct si_shader shader = {};
        struct si_shader_context ctx;
        struct gallivm_state *gallivm = &ctx.gallivm;
 
-       si_init_shader_ctx(&ctx, sscreen, &shader, tm);
+       si_init_shader_ctx(&ctx, sscreen, tm);
+       ctx.shader = &shader;
        ctx.type = type;
 
        switch (type) {
        case PIPE_SHADER_VERTEX:
                break;
        case PIPE_SHADER_TESS_CTRL:
                assert(!prolog);
                shader.key.part.tcs.epilog = key->tcs_epilog.states;
                break;
        case PIPE_SHADER_GEOMETRY:
diff --git a/src/gallium/drivers/radeonsi/si_shader_internal.h 
b/src/gallium/drivers/radeonsi/si_shader_internal.h
index fd7deec..3f856c4 100644
--- a/src/gallium/drivers/radeonsi/si_shader_internal.h
+++ b/src/gallium/drivers/radeonsi/si_shader_internal.h
@@ -175,24 +175,23 @@ LLVMTypeRef tgsi2llvmtype(struct lp_build_tgsi_context 
*bld_base,
 
 LLVMValueRef bitcast(struct lp_build_tgsi_context *bld_base,
                     enum tgsi_opcode_type type, LLVMValueRef value);
 
 LLVMValueRef si_llvm_bound_index(struct si_shader_context *ctx,
                                 LLVMValueRef index,
                                 unsigned num);
 
 void si_llvm_context_init(struct si_shader_context *ctx,
                          struct si_screen *sscreen,
-                         struct si_shader *shader,
-                         LLVMTargetMachineRef tm,
-                         const struct tgsi_shader_info *info,
-                         const struct tgsi_token *tokens);
+                         LLVMTargetMachineRef tm);
+void si_llvm_context_set_tgsi(struct si_shader_context *ctx,
+                             struct si_shader *shader);
 
 void si_llvm_create_func(struct si_shader_context *ctx,
                         const char *name,
                         LLVMTypeRef *return_types, unsigned num_return_elems,
                         LLVMTypeRef *ParamTypes, unsigned ParamCount);
 
 void si_llvm_dispose(struct si_shader_context *ctx);
 
 void si_llvm_finalize_module(struct si_shader_context *ctx,
                             bool run_verifier);
diff --git a/src/gallium/drivers/radeonsi/si_shader_tgsi_setup.c 
b/src/gallium/drivers/radeonsi/si_shader_tgsi_setup.c
index 7218d2d..c733f5a 100644
--- a/src/gallium/drivers/radeonsi/si_shader_tgsi_setup.c
+++ b/src/gallium/drivers/radeonsi/si_shader_tgsi_setup.c
@@ -1249,37 +1249,32 @@ static void emit_immediate(struct lp_build_tgsi_context 
*bld_base,
        for (i = 0; i < 4; ++i) {
                ctx->imms[ctx->imms_num * TGSI_NUM_CHANNELS + i] =
                                LLVMConstInt(ctx->i32, imm->u[i].Uint, false   
);
        }
 
        ctx->imms_num++;
 }
 
 void si_llvm_context_init(struct si_shader_context *ctx,
                          struct si_screen *sscreen,
-                         struct si_shader *shader,
-                         LLVMTargetMachineRef tm,
-                         const struct tgsi_shader_info *info,
-                         const struct tgsi_token *tokens)
+                         LLVMTargetMachineRef tm)
 {
        struct lp_type type;
 
        /* Initialize the gallivm object:
         * We are only using the module, context, and builder fields of this 
struct.
         * This should be enough for us to be able to pass our gallivm struct 
to the
         * helper functions in the gallivm module.
         */
        memset(ctx, 0, sizeof(*ctx));
-       ctx->shader = shader;
        ctx->screen = sscreen;
        ctx->tm = tm;
-       ctx->type = info ? info->processor : -1;
 
        ctx->gallivm.context = LLVMContextCreate();
        ctx->gallivm.module = LLVMModuleCreateWithNameInContext("tgsi",
                                                ctx->gallivm.context);
        LLVMSetTarget(ctx->gallivm.module, "amdgcn--");
 
 #if HAVE_LLVM >= 0x0309
        LLVMTargetDataRef data_layout = LLVMCreateTargetDataLayout(tm);
        char *data_layout_str = LLVMCopyStringRepOfTargetData(data_layout);
        LLVMSetDataLayout(ctx->gallivm.module, data_layout_str);
@@ -1294,65 +1289,40 @@ void si_llvm_context_init(struct si_shader_context *ctx,
 
        ctx->gallivm.builder = lp_create_builder(ctx->gallivm.context,
                                                 float_mode);
 
        ac_llvm_context_init(&ctx->ac, ctx->gallivm.context);
        ctx->ac.module = ctx->gallivm.module;
        ctx->ac.builder = ctx->gallivm.builder;
 
        struct lp_build_tgsi_context *bld_base = &ctx->bld_base;
 
-       bld_base->info = info;
-
-       if (info && info->array_max[TGSI_FILE_TEMPORARY] > 0) {
-               int size = info->array_max[TGSI_FILE_TEMPORARY];
-
-               ctx->temp_arrays = CALLOC(size, sizeof(ctx->temp_arrays[0]));
-               ctx->temp_array_allocas = CALLOC(size, 
sizeof(ctx->temp_array_allocas[0]));
-
-               if (tokens)
-                       tgsi_scan_arrays(tokens, TGSI_FILE_TEMPORARY, size,
-                                        ctx->temp_arrays);
-       }
-
-       if (info && info->file_max[TGSI_FILE_IMMEDIATE] >= 0) {
-               int size = info->file_max[TGSI_FILE_IMMEDIATE] + 1;
-               ctx->imms = MALLOC(size * TGSI_NUM_CHANNELS * 
sizeof(LLVMValueRef));
-       }
-
        type.floating = true;
        type.fixed = false;
        type.sign = true;
        type.norm = false;
        type.width = 32;
        type.length = 1;
 
        lp_build_context_init(&bld_base->base, &ctx->gallivm, type);
        lp_build_context_init(&ctx->bld_base.uint_bld, &ctx->gallivm, 
lp_uint_type(type));
        lp_build_context_init(&ctx->bld_base.int_bld, &ctx->gallivm, 
lp_int_type(type));
        type.width *= 2;
        lp_build_context_init(&ctx->bld_base.dbl_bld, &ctx->gallivm, type);
        lp_build_context_init(&ctx->bld_base.uint64_bld, &ctx->gallivm, 
lp_uint_type(type));
        lp_build_context_init(&ctx->bld_base.int64_bld, &ctx->gallivm, 
lp_int_type(type));
 
        bld_base->soa = 1;
-       bld_base->emit_store = si_llvm_emit_store;
        bld_base->emit_swizzle = emit_swizzle;
        bld_base->emit_declaration = emit_declaration;
        bld_base->emit_immediate = emit_immediate;
 
-       bld_base->emit_fetch_funcs[TGSI_FILE_IMMEDIATE] = si_llvm_emit_fetch;
-       bld_base->emit_fetch_funcs[TGSI_FILE_INPUT] = si_llvm_emit_fetch;
-       bld_base->emit_fetch_funcs[TGSI_FILE_TEMPORARY] = si_llvm_emit_fetch;
-       bld_base->emit_fetch_funcs[TGSI_FILE_OUTPUT] = si_llvm_emit_fetch;
-       bld_base->emit_fetch_funcs[TGSI_FILE_SYSTEM_VALUE] = fetch_system_value;
-
        /* metadata allowing 2.5 ULP */
        ctx->fpmath_md_kind = LLVMGetMDKindIDInContext(ctx->gallivm.context,
                                                       "fpmath", 6);
        LLVMValueRef arg = lp_build_const_float(&ctx->gallivm, 2.5);
        ctx->fpmath_md_2p5_ulp = LLVMMDNodeInContext(ctx->gallivm.context,
                                                     &arg, 1);
 
        bld_base->op_actions[TGSI_OPCODE_BGNLOOP].emit = bgnloop_emit;
        bld_base->op_actions[TGSI_OPCODE_BRK].emit = brk_emit;
        bld_base->op_actions[TGSI_OPCODE_CONT].emit = cont_emit;
@@ -1374,20 +1344,81 @@ void si_llvm_context_init(struct si_shader_context *ctx,
        ctx->v16i8 = LLVMVectorType(ctx->i8, 16);
        ctx->v2i32 = LLVMVectorType(ctx->i32, 2);
        ctx->v4i32 = LLVMVectorType(ctx->i32, 4);
        ctx->v4f32 = LLVMVectorType(ctx->f32, 4);
        ctx->v8i32 = LLVMVectorType(ctx->i32, 8);
 
        ctx->i32_0 = LLVMConstInt(ctx->i32, 0, 0);
        ctx->i32_1 = LLVMConstInt(ctx->i32, 1, 0);
 }
 
+/* Set the context to a certain TGSI shader. Can be called repeatedly
+ * to change the shader. */
+void si_llvm_context_set_tgsi(struct si_shader_context *ctx,
+                             struct si_shader *shader)
+{
+       const struct tgsi_shader_info *info = NULL;
+       const struct tgsi_token *tokens = NULL;
+
+       if (shader && shader->selector) {
+               info = &shader->selector->info;
+               tokens = shader->selector->tokens;
+       }
+
+       ctx->shader = shader;
+       ctx->type = info ? info->processor : -1;
+       ctx->bld_base.info = info;
+
+       /* Clean up the old contents. */
+       FREE(ctx->temp_arrays);
+       ctx->temp_arrays = NULL;
+       FREE(ctx->temp_array_allocas);
+       ctx->temp_array_allocas = NULL;
+
+       FREE(ctx->imms);
+       ctx->imms = NULL;
+       ctx->imms_num = 0;
+
+       FREE(ctx->temps);
+       ctx->temps = NULL;
+       ctx->temps_count = 0;
+
+       if (!info || !tokens)
+               return;
+
+       if (info->array_max[TGSI_FILE_TEMPORARY] > 0) {
+               int size = info->array_max[TGSI_FILE_TEMPORARY];
+
+               ctx->temp_arrays = CALLOC(size, sizeof(ctx->temp_arrays[0]));
+               ctx->temp_array_allocas = CALLOC(size, 
sizeof(ctx->temp_array_allocas[0]));
+
+               tgsi_scan_arrays(tokens, TGSI_FILE_TEMPORARY, size,
+                                ctx->temp_arrays);
+       }
+       if (info->file_max[TGSI_FILE_IMMEDIATE] >= 0) {
+               int size = info->file_max[TGSI_FILE_IMMEDIATE] + 1;
+               ctx->imms = MALLOC(size * TGSI_NUM_CHANNELS * 
sizeof(LLVMValueRef));
+       }
+
+       /* Re-set these to start with a clean slate. */
+       ctx->bld_base.num_instructions = 0;
+       ctx->bld_base.pc = 0;
+       memset(ctx->outputs, 0, sizeof(ctx->outputs));
+
+       ctx->bld_base.emit_store = si_llvm_emit_store;
+       ctx->bld_base.emit_fetch_funcs[TGSI_FILE_IMMEDIATE] = 
si_llvm_emit_fetch;
+       ctx->bld_base.emit_fetch_funcs[TGSI_FILE_INPUT] = si_llvm_emit_fetch;
+       ctx->bld_base.emit_fetch_funcs[TGSI_FILE_TEMPORARY] = 
si_llvm_emit_fetch;
+       ctx->bld_base.emit_fetch_funcs[TGSI_FILE_OUTPUT] = si_llvm_emit_fetch;
+       ctx->bld_base.emit_fetch_funcs[TGSI_FILE_SYSTEM_VALUE] = 
fetch_system_value;
+}
+
 void si_llvm_create_func(struct si_shader_context *ctx,
                         const char *name,
                         LLVMTypeRef *return_types, unsigned num_return_elems,
                         LLVMTypeRef *ParamTypes, unsigned ParamCount)
 {
        LLVMTypeRef main_fn_type, ret_type;
        LLVMBasicBlockRef main_fn_body;
 
        if (num_return_elems)
                ret_type = LLVMStructTypeInContext(ctx->gallivm.context,
-- 
2.7.4

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