[Mesa-dev] [PATCH 2/2] radv: Use new image load/store intrinsic signatures

Kai Wasserb├Ąch kai at dev.carbon-project.org
Thu Oct 13 17:20:30 UTC 2016


Dear Tom,
just FYI: this fails to apply on top of master
(761388a0eb586b1dcaec063ee561056ed132dc1a). git am chokes on the
visit_image_store() hunk for me. Attached is a "refreshed" version, which
applies for me. I hope I didn't butcher anything inadvertently.

Cheers,
Kai


Tom Stellard wrote on 13.10.2016 17:21:
> These were changed in LLVM r284024.
> ---
>  src/amd/common/ac_nir_to_llvm.c | 131 ++++++++++++++++++++++++++++++++--------
>  1 file changed, 107 insertions(+), 24 deletions(-)
> 
> diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
> index 9c764c7..4fba7d3 100644
> --- a/src/amd/common/ac_nir_to_llvm.c
> +++ b/src/amd/common/ac_nir_to_llvm.c
> @@ -2296,13 +2296,73 @@ static LLVMValueRef get_image_coords(struct nir_to_llvm_context *ctx,
>  	return res;
>  }
>  
> +static void build_type_name_for_intr(
> +        LLVMTypeRef type,
> +        char *buf, unsigned bufsize)
> +{
> +        LLVMTypeRef elem_type = type;
> +
> +        assert(bufsize >= 8);
> +
> +        if (LLVMGetTypeKind(type) == LLVMVectorTypeKind) {
> +                int ret = snprintf(buf, bufsize, "v%u",
> +                                        LLVMGetVectorSize(type));
> +                if (ret < 0) {
> +                        char *type_name = LLVMPrintTypeToString(type);
> +                        fprintf(stderr, "Error building type name for: %s\n",
> +                                type_name);
> +                        return;
> +                }
> +                elem_type = LLVMGetElementType(type);
> +                buf += ret;
> +                bufsize -= ret;
> +        }
> +        switch (LLVMGetTypeKind(elem_type)) {
> +        default: break;
> +        case LLVMIntegerTypeKind:
> +                snprintf(buf, bufsize, "i%d", LLVMGetIntTypeWidth(elem_type));
> +                break;
> +        case LLVMFloatTypeKind:
> +                snprintf(buf, bufsize, "f32");
> +                break;
> +        case LLVMDoubleTypeKind:
> +                snprintf(buf, bufsize, "f64");
> +                break;
> +        }
> +}
> +
> +static void get_image_intr_name(const char *base_name,
> +                                LLVMTypeRef data_type,
> +                                LLVMTypeRef coords_type,
> +                                LLVMTypeRef rsrc_type,
> +                                char *out_name, unsigned out_len)
> +{
> +        char coords_type_name[8];
> +
> +        build_type_name_for_intr(coords_type, coords_type_name,
> +                            sizeof(coords_type_name));
> +
> +        if (HAVE_LLVM <= 0x0309) {
> +                snprintf(out_name, out_len, "%s.%s", base_name, coords_type_name);
> +        } else {
> +                char data_type_name[8];
> +                char rsrc_type_name[8];
> +
> +                build_type_name_for_intr(data_type, data_type_name,
> +                                        sizeof(data_type_name));
> +                build_type_name_for_intr(rsrc_type, rsrc_type_name,
> +                                        sizeof(rsrc_type_name));
> +                snprintf(out_name, out_len, "%s.%s.%s.%s", base_name,
> +                         data_type_name, coords_type_name, rsrc_type_name);
> +        }
> +}
> +
>  static LLVMValueRef visit_image_load(struct nir_to_llvm_context *ctx,
>  				     nir_intrinsic_instr *instr)
>  {
>  	LLVMValueRef params[7];
>  	LLVMValueRef res;
> -	char intrinsic_name[32];
> -	char coords_type[8];
> +	char intrinsic_name[64];
>  	const nir_variable *var = instr->variables[0]->var;
>  	const struct glsl_type *type = var->type;
>  	if(instr->variables[0]->deref.child)
> @@ -2322,23 +2382,35 @@ static LLVMValueRef visit_image_load(struct nir_to_llvm_context *ctx,
>  		res = trim_vector(ctx, res, instr->dest.ssa.num_components);
>  		res = to_integer(ctx, res);
>  	} else {
> -		bool da = glsl_sampler_type_is_array(type) ||
> -		          glsl_get_sampler_dim(type) == GLSL_SAMPLER_DIM_CUBE;
> +		bool is_da = glsl_sampler_type_is_array(type) ||
> +			     glsl_get_sampler_dim(type) == GLSL_SAMPLER_DIM_CUBE;
>  		bool add_frag_pos = glsl_get_sampler_dim(type) == GLSL_SAMPLER_DIM_SUBPASS;
> +		LLVMValueRef da = is_da ? ctx->i32one : ctx->i32zero;
> +		LLVMValueRef glc = LLVMConstInt(ctx->i1, 0, false);
> +		LLVMValueRef slc = LLVMConstInt(ctx->i1, 0, false);
>  
>  		params[0] = get_image_coords(ctx, instr, add_frag_pos);
>  		params[1] = get_sampler_desc(ctx, instr->variables[0], DESC_IMAGE);
>  		params[2] = LLVMConstInt(ctx->i32, 15, false); /* dmask */
> -		params[3] = LLVMConstInt(ctx->i1, 0, false);  /* r128 */
> -		params[4] = da ? ctx->i32one : ctx->i32zero; /* da */
> -		params[5] = LLVMConstInt(ctx->i1, 0, false);  /* glc */
> -		params[6] = LLVMConstInt(ctx->i1, 0, false);  /* slc */
> +		if (HAVE_LLVM <= 0x0309) {
> +			params[3] = LLVMConstInt(ctx->i1, 0, false);  /* r128 */
> +			params[4] = da;
> +			params[5] = glc;
> +			params[6] = slc;
> +		} else {
> +			LLVMValueRef lwe = LLVMConstInt(ctx->i1, 0, false);
> +			params[3] = glc;
> +			params[4] = slc;
> +			params[5] = lwe;
> +			params[6] = da;
> +		}
>  
> -		build_int_type_name(LLVMTypeOf(params[0]),
> -				coords_type, sizeof(coords_type));
> +		get_image_intr_name("llvm.amdgcn.image.load",
> +				    ctx->v4f32, /* vdata */
> +				    LLVMTypeOf(params[0]), /* coords */
> +				    LLVMTypeOf(params[1]), /* rsrc */
> +				    intrinsic_name, sizeof(intrinsic_name));
>  
> -		snprintf(intrinsic_name, sizeof(intrinsic_name),
> -			"llvm.amdgcn.image.load.%s", coords_type);
>  		res = emit_llvm_intrinsic(ctx, intrinsic_name, ctx->v4f32,
>  					params, 7, LLVMReadOnlyAttribute);
>  	}
> @@ -2349,8 +2421,7 @@ static void visit_image_store(struct nir_to_llvm_context *ctx,
>  			      nir_intrinsic_instr *instr)
>  {
>  	LLVMValueRef params[8];
> -	char intrinsic_name[32];
> -	char coords_type[8];
> +	char intrinsic_name[64];
>  	const nir_variable *var = instr->variables[0]->var;
>  	LLVMValueRef i1false = LLVMConstInt(ctx->i1, 0, 0);
>  	LLVMValueRef i1true = LLVMConstInt(ctx->i1, 1, 0);
> @@ -2370,23 +2441,35 @@ static void visit_image_store(struct nir_to_llvm_context *ctx,
>  		emit_llvm_intrinsic(ctx, "llvm.amdgcn.buffer.store.format.v4f32", ctx->voidt,
>  				    params, 6, 0);
>  	} else {
> -		bool da = glsl_sampler_type_is_array(type) ||
> -		          glsl_get_sampler_dim(type) == GLSL_SAMPLER_DIM_CUBE;
> +		bool is_da = glsl_sampler_type_is_array(type) ||
> +			     glsl_get_sampler_dim(type) == GLSL_SAMPLER_DIM_CUBE;
> +		LLVMValueRef da = is_da ? i1true : i1false;
> +		LLVMValueRef glc = i1false;
> +		LLVMValueRef slc = i1false;
>  
>  		params[0] = get_src(ctx, instr->src[2]);
>  		params[1] = get_image_coords(ctx, instr, false); /* coords */
>  		params[2] = get_sampler_desc(ctx, instr->variables[0], DESC_IMAGE);
>  		params[3] = LLVMConstInt(ctx->i32, 15, false); /* dmask */
> -		params[4] = i1false;  /* r128 */
> -		params[5] = da ? i1true : i1false; /* da */
> -		params[6] = i1false;  /* glc */
> -		params[7] = i1false;  /* slc */
> +		if (HAVE_LLVM <= 0x0309) {
> +			params[4] = i1false;  /* r128 */
> +			params[5] = da;
> +			params[6] = glc;
> +			params[7] = slc;
> +		} else {
> +			LLVMValueRef lwe = i1false;
> +			params[4] = glc;
> +			params[5] = slc;
> +			params[6] = lwe;
> +			params[7] = da;
> +		}
>  
> -		build_int_type_name(LLVMTypeOf(params[1]),
> -				    coords_type, sizeof(coords_type));
> +		get_image_intr_name("llvm.amdgcn.image.store",
> +				    LLVMTypeOf(params[0]), /* vdata */
> +				    LLVMTypeOf(params[1]), /* coords */
> +				    LLVMTypeOf(params[2]), /* rsrc */
> +				    intrinsic_name, sizeof(intrinsic_name));
>  
> -		snprintf(intrinsic_name, sizeof(intrinsic_name),
> -			 "llvm.amdgcn.image.store.%s", coords_type);
>  		emit_llvm_intrinsic(ctx, intrinsic_name, ctx->voidt,
>  				    params, 8, 0);
>  	}
> 

-- 

Kai Wasserb├Ąch (Kai Wasserbaech)

E-Mail: kai at dev.carbon-project.org
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