radeon/ac: move common llvm build functions to a separate file.

Suggested by Marek.

Reviewed-by: Marek Olšák <[email protected]>
Acked-by: Nicolai Hähnle <[email protected]>
Reviewed-by: Edward O'Callaghan <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>

1 files changed, 1 insertions, 716 deletions

diff --git a/src/amd/common/ac_llvm_util.c b/src/amd/common/ac_llvm_util.c
index 156d8745dfa..be127c5af16 100644
--- a/src/amd/common/ac_llvm_util.c
+++ b/src/amd/common/ac_llvm_util.c
@@ -31,11 +31,7 @@
 
 #include <assert.h>
 #include <stdio.h>
-
-#include "util/bitscan.h"
-#include "util/macros.h"
-
-#include "sid.h"
+#include <string.h>
 
 static void ac_init_llvm_target()
 {
@@ -146,44 +142,6 @@ LLVMTargetMachineRef ac_create_target_machine(enum radeon_family family, bool su
 	return tm;
 }
 
-/* Initialize module-independent parts of the context.
- *
- * The caller is responsible for initializing ctx::module and ctx::builder.
- */
-void
-ac_llvm_context_init(struct ac_llvm_context *ctx, LLVMContextRef context)
-{
-	LLVMValueRef args[1];
-
-	ctx->context = context;
-	ctx->module = NULL;
-	ctx->builder = NULL;
-
-	ctx->voidt = LLVMVoidTypeInContext(ctx->context);
-	ctx->i1 = LLVMInt1TypeInContext(ctx->context);
-	ctx->i8 = LLVMInt8TypeInContext(ctx->context);
-	ctx->i32 = LLVMIntTypeInContext(ctx->context, 32);
-	ctx->f32 = LLVMFloatTypeInContext(ctx->context);
-	ctx->v4i32 = LLVMVectorType(ctx->i32, 4);
-	ctx->v4f32 = LLVMVectorType(ctx->f32, 4);
-	ctx->v16i8 = LLVMVectorType(ctx->i8, 16);
-
-	ctx->range_md_kind = LLVMGetMDKindIDInContext(ctx->context,
-						     "range", 5);
-
-	ctx->invariant_load_md_kind = LLVMGetMDKindIDInContext(ctx->context,
-							       "invariant.load", 14);
-
-	ctx->fpmath_md_kind = LLVMGetMDKindIDInContext(ctx->context, "fpmath", 6);
-
-	args[0] = LLVMConstReal(ctx->f32, 2.5);
-	ctx->fpmath_md_2p5_ulp = LLVMMDNodeInContext(ctx->context, args, 1);
-
-	ctx->uniform_md_kind = LLVMGetMDKindIDInContext(ctx->context,
-							"amdgpu.uniform", 14);
-
-	ctx->empty_md = LLVMMDNodeInContext(ctx->context, NULL, 0);
-}
 
 #if HAVE_LLVM < 0x0400
 static LLVMAttribute ac_attr_to_llvm_attr(enum ac_func_attr attr)
@@ -245,285 +203,6 @@ ac_add_function_attr(LLVMValueRef function,
 #endif
 }
 
-LLVMValueRef
-ac_emit_llvm_intrinsic(struct ac_llvm_context *ctx, const char *name,
-		       LLVMTypeRef return_type, LLVMValueRef *params,
-		       unsigned param_count, unsigned attrib_mask)
-{
-	LLVMValueRef function;
-
-	function = LLVMGetNamedFunction(ctx->module, name);
-	if (!function) {
-		LLVMTypeRef param_types[32], function_type;
-		unsigned i;
-
-		assert(param_count <= 32);
-
-		for (i = 0; i < param_count; ++i) {
-			assert(params[i]);
-			param_types[i] = LLVMTypeOf(params[i]);
-		}
-		function_type =
-		    LLVMFunctionType(return_type, param_types, param_count, 0);
-		function = LLVMAddFunction(ctx->module, name, function_type);
-
-		LLVMSetFunctionCallConv(function, LLVMCCallConv);
-		LLVMSetLinkage(function, LLVMExternalLinkage);
-
-		attrib_mask |= AC_FUNC_ATTR_NOUNWIND;
-		while (attrib_mask) {
-			enum ac_func_attr attr = 1u << u_bit_scan(&attrib_mask);
-			ac_add_function_attr(function, -1, attr);
-		}
-	}
-	return LLVMBuildCall(ctx->builder, function, params, param_count, "");
-}
-
-LLVMValueRef
-ac_build_gather_values_extended(struct ac_llvm_context *ctx,
-				LLVMValueRef *values,
-				unsigned value_count,
-				unsigned value_stride,
-				bool load)
-{
-	LLVMBuilderRef builder = ctx->builder;
-	LLVMValueRef vec;
-	unsigned i;
-
-
-	if (value_count == 1) {
-		if (load)
-			return LLVMBuildLoad(builder, values[0], "");
-		return values[0];
-	} else if (!value_count)
-		unreachable("value_count is 0");
-
-	for (i = 0; i < value_count; i++) {
-		LLVMValueRef value = values[i * value_stride];
-		if (load)
-			value = LLVMBuildLoad(builder, value, "");
-
-		if (!i)
-			vec = LLVMGetUndef( LLVMVectorType(LLVMTypeOf(value), value_count));
-		LLVMValueRef index = LLVMConstInt(ctx->i32, i, false);
-		vec = LLVMBuildInsertElement(builder, vec, value, index, "");
-	}
-	return vec;
-}
-
-LLVMValueRef
-ac_build_gather_values(struct ac_llvm_context *ctx,
-		       LLVMValueRef *values,
-		       unsigned value_count)
-{
-	return ac_build_gather_values_extended(ctx, values, value_count, 1, false);
-}
-
-LLVMValueRef
-ac_emit_fdiv(struct ac_llvm_context *ctx,
-	     LLVMValueRef num,
-	     LLVMValueRef den)
-{
-	LLVMValueRef ret = LLVMBuildFDiv(ctx->builder, num, den, "");
-
-	if (!LLVMIsConstant(ret))
-		LLVMSetMetadata(ret, ctx->fpmath_md_kind, ctx->fpmath_md_2p5_ulp);
-	return ret;
-}
-
-/* Coordinates for cube map selection. sc, tc, and ma are as in Table 8.27
- * of the OpenGL 4.5 (Compatibility Profile) specification, except ma is
- * already multiplied by two. id is the cube face number.
- */
-struct cube_selection_coords {
-	LLVMValueRef stc[2];
-	LLVMValueRef ma;
-	LLVMValueRef id;
-};
-
-static void
-build_cube_intrinsic(struct ac_llvm_context *ctx,
-		     LLVMValueRef in[3],
-		     struct cube_selection_coords *out)
-{
-	LLVMBuilderRef builder = ctx->builder;
-
-	if (HAVE_LLVM >= 0x0309) {
-		LLVMTypeRef f32 = ctx->f32;
-
-		out->stc[1] = ac_emit_llvm_intrinsic(ctx, "llvm.amdgcn.cubetc",
-					f32, in, 3, AC_FUNC_ATTR_READNONE);
-		out->stc[0] = ac_emit_llvm_intrinsic(ctx, "llvm.amdgcn.cubesc",
-					f32, in, 3, AC_FUNC_ATTR_READNONE);
-		out->ma = ac_emit_llvm_intrinsic(ctx, "llvm.amdgcn.cubema",
-					f32, in, 3, AC_FUNC_ATTR_READNONE);
-		out->id = ac_emit_llvm_intrinsic(ctx, "llvm.amdgcn.cubeid",
-					f32, in, 3, AC_FUNC_ATTR_READNONE);
-	} else {
-		LLVMValueRef c[4] = {
-			in[0],
-			in[1],
-			in[2],
-			LLVMGetUndef(LLVMTypeOf(in[0]))
-		};
-		LLVMValueRef vec = ac_build_gather_values(ctx, c, 4);
-
-		LLVMValueRef tmp =
-			ac_emit_llvm_intrinsic(ctx, "llvm.AMDGPU.cube",
-					  LLVMTypeOf(vec), &vec, 1,
-					  AC_FUNC_ATTR_READNONE);
-
-		out->stc[1] = LLVMBuildExtractElement(builder, tmp,
-				LLVMConstInt(ctx->i32, 0, 0), "");
-		out->stc[0] = LLVMBuildExtractElement(builder, tmp,
-				LLVMConstInt(ctx->i32, 1, 0), "");
-		out->ma = LLVMBuildExtractElement(builder, tmp,
-				LLVMConstInt(ctx->i32, 2, 0), "");
-		out->id = LLVMBuildExtractElement(builder, tmp,
-				LLVMConstInt(ctx->i32, 3, 0), "");
-	}
-}
-
-/**
- * Build a manual selection sequence for cube face sc/tc coordinates and
- * major axis vector (multiplied by 2 for consistency) for the given
- * vec3 \p coords, for the face implied by \p selcoords.
- *
- * For the major axis, we always adjust the sign to be in the direction of
- * selcoords.ma; i.e., a positive out_ma means that coords is pointed towards
- * the selcoords major axis.
- */
-static void build_cube_select(LLVMBuilderRef builder,
-			      const struct cube_selection_coords *selcoords,
-			      const LLVMValueRef *coords,
-			      LLVMValueRef *out_st,
-			      LLVMValueRef *out_ma)
-{
-	LLVMTypeRef f32 = LLVMTypeOf(coords[0]);
-	LLVMValueRef is_ma_positive;
-	LLVMValueRef sgn_ma;
-	LLVMValueRef is_ma_z, is_not_ma_z;
-	LLVMValueRef is_ma_y;
-	LLVMValueRef is_ma_x;
-	LLVMValueRef sgn;
-	LLVMValueRef tmp;
-
-	is_ma_positive = LLVMBuildFCmp(builder, LLVMRealUGE,
-		selcoords->ma, LLVMConstReal(f32, 0.0), "");
-	sgn_ma = LLVMBuildSelect(builder, is_ma_positive,
-		LLVMConstReal(f32, 1.0), LLVMConstReal(f32, -1.0), "");
-
-	is_ma_z = LLVMBuildFCmp(builder, LLVMRealUGE, selcoords->id, LLVMConstReal(f32, 4.0), "");
-	is_not_ma_z = LLVMBuildNot(builder, is_ma_z, "");
-	is_ma_y = LLVMBuildAnd(builder, is_not_ma_z,
-		LLVMBuildFCmp(builder, LLVMRealUGE, selcoords->id, LLVMConstReal(f32, 2.0), ""), "");
-	is_ma_x = LLVMBuildAnd(builder, is_not_ma_z, LLVMBuildNot(builder, is_ma_y, ""), "");
-
-	/* Select sc */
-	tmp = LLVMBuildSelect(builder, is_ma_z, coords[2], coords[0], "");
-	sgn = LLVMBuildSelect(builder, is_ma_y, LLVMConstReal(f32, 1.0),
-		LLVMBuildSelect(builder, is_ma_x, sgn_ma,
-			LLVMBuildFNeg(builder, sgn_ma, ""), ""), "");
-	out_st[0] = LLVMBuildFMul(builder, tmp, sgn, "");
-
-	/* Select tc */
-	tmp = LLVMBuildSelect(builder, is_ma_y, coords[2], coords[1], "");
-	sgn = LLVMBuildSelect(builder, is_ma_y, LLVMBuildFNeg(builder, sgn_ma, ""),
-		LLVMConstReal(f32, -1.0), "");
-	out_st[1] = LLVMBuildFMul(builder, tmp, sgn, "");
-
-	/* Select ma */
-	tmp = LLVMBuildSelect(builder, is_ma_z, coords[2],
-		LLVMBuildSelect(builder, is_ma_y, coords[1], coords[0], ""), "");
-	sgn = LLVMBuildSelect(builder, is_ma_positive,
-		LLVMConstReal(f32, 2.0), LLVMConstReal(f32, -2.0), "");
-	*out_ma = LLVMBuildFMul(builder, tmp, sgn, "");
-}
-
-void
-ac_prepare_cube_coords(struct ac_llvm_context *ctx,
-		       bool is_deriv, bool is_array,
-		       LLVMValueRef *coords_arg,
-		       LLVMValueRef *derivs_arg)
-{
-
-	LLVMBuilderRef builder = ctx->builder;
-	struct cube_selection_coords selcoords;
-	LLVMValueRef coords[3];
-	LLVMValueRef invma;
-
-	build_cube_intrinsic(ctx, coords_arg, &selcoords);
-
-	invma = ac_emit_llvm_intrinsic(ctx, "llvm.fabs.f32",
-			ctx->f32, &selcoords.ma, 1, AC_FUNC_ATTR_READNONE);
-	invma = ac_emit_fdiv(ctx, LLVMConstReal(ctx->f32, 1.0), invma);
-
-	for (int i = 0; i < 2; ++i)
-		coords[i] = LLVMBuildFMul(builder, selcoords.stc[i], invma, "");
-
-	coords[2] = selcoords.id;
-
-	if (is_deriv && derivs_arg) {
-		LLVMValueRef derivs[4];
-		int axis;
-
-		/* Convert cube derivatives to 2D derivatives. */
-		for (axis = 0; axis < 2; axis++) {
-			LLVMValueRef deriv_st[2];
-			LLVMValueRef deriv_ma;
-
-			/* Transform the derivative alongside the texture
-			 * coordinate. Mathematically, the correct formula is
-			 * as follows. Assume we're projecting onto the +Z face
-			 * and denote by dx/dh the derivative of the (original)
-			 * X texture coordinate with respect to horizontal
-			 * window coordinates. The projection onto the +Z face
-			 * plane is:
-			 *
-			 *   f(x,z) = x/z
-			 *
-			 * Then df/dh = df/dx * dx/dh + df/dz * dz/dh
-			 *            = 1/z * dx/dh - x/z * 1/z * dz/dh.
-			 *
-			 * This motivatives the implementation below.
-			 *
-			 * Whether this actually gives the expected results for
-			 * apps that might feed in derivatives obtained via
-			 * finite differences is anyone's guess. The OpenGL spec
-			 * seems awfully quiet about how textureGrad for cube
-			 * maps should be handled.
-			 */
-			build_cube_select(builder, &selcoords, &derivs_arg[axis * 3],
-					  deriv_st, &deriv_ma);
-
-			deriv_ma = LLVMBuildFMul(builder, deriv_ma, invma, "");
-
-			for (int i = 0; i < 2; ++i)
-				derivs[axis * 2 + i] =
-					LLVMBuildFSub(builder,
-						LLVMBuildFMul(builder, deriv_st[i], invma, ""),
-						LLVMBuildFMul(builder, deriv_ma, coords[i], ""), "");
-		}
-
-		memcpy(derivs_arg, derivs, sizeof(derivs));
-	}
-
-	/* Shift the texture coordinate. This must be applied after the
-	 * derivative calculation.
-	 */
-	for (int i = 0; i < 2; ++i)
-		coords[i] = LLVMBuildFAdd(builder, coords[i], LLVMConstReal(ctx->f32, 1.5), "");
-
-	if (is_array) {
-		/* for cube arrays coord.z = coord.w(array_index) * 8 + face */
-		/* coords_arg.w component - array_index for cube arrays */
-		LLVMValueRef tmp = LLVMBuildFMul(ctx->builder, coords_arg[3], LLVMConstReal(ctx->f32, 8.0), "");
-		coords[2] = LLVMBuildFAdd(ctx->builder, tmp, coords[2], "");
-	}
-
-	memcpy(coords_arg, coords, sizeof(coords));
-}
-
 void
 ac_dump_module(LLVMModuleRef module)
 {
@@ -531,397 +210,3 @@ ac_dump_module(LLVMModuleRef module)
 	fprintf(stderr, "%s", str);
 	LLVMDisposeMessage(str);
 }
-
-LLVMValueRef
-ac_build_fs_interp(struct ac_llvm_context *ctx,
-		   LLVMValueRef llvm_chan,
-		   LLVMValueRef attr_number,
-		   LLVMValueRef params,
-		   LLVMValueRef i,
-		   LLVMValueRef j)
-{
-	LLVMValueRef args[5];
-	LLVMValueRef p1;
-	
-	if (HAVE_LLVM < 0x0400) {
-		LLVMValueRef ij[2];
-		ij[0] = LLVMBuildBitCast(ctx->builder, i, ctx->i32, "");
-		ij[1] = LLVMBuildBitCast(ctx->builder, j, ctx->i32, "");
-
-		args[0] = llvm_chan;
-		args[1] = attr_number;
-		args[2] = params;
-		args[3] = ac_build_gather_values(ctx, ij, 2);
-		return ac_emit_llvm_intrinsic(ctx, "llvm.SI.fs.interp",
-					      ctx->f32, args, 4,
-					      AC_FUNC_ATTR_READNONE);
-	}
-
-	args[0] = i;
-	args[1] = llvm_chan;
-	args[2] = attr_number;
-	args[3] = params;
-
-	p1 = ac_emit_llvm_intrinsic(ctx, "llvm.amdgcn.interp.p1",
-				    ctx->f32, args, 4, AC_FUNC_ATTR_READNONE);
-
-	args[0] = p1;
-	args[1] = j;
-	args[2] = llvm_chan;
-	args[3] = attr_number;
-	args[4] = params;
-
-	return ac_emit_llvm_intrinsic(ctx, "llvm.amdgcn.interp.p2",
-				      ctx->f32, args, 5, AC_FUNC_ATTR_READNONE);
-}
-
-LLVMValueRef
-ac_build_fs_interp_mov(struct ac_llvm_context *ctx,
-		       LLVMValueRef parameter,
-		       LLVMValueRef llvm_chan,
-		       LLVMValueRef attr_number,
-		       LLVMValueRef params)
-{
-	LLVMValueRef args[4];
-	if (HAVE_LLVM < 0x0400) {
-		args[0] = llvm_chan;
-		args[1] = attr_number;
-		args[2] = params;
-
-		return ac_emit_llvm_intrinsic(ctx,
-					      "llvm.SI.fs.constant",
-					      ctx->f32, args, 3,
-					      AC_FUNC_ATTR_READNONE);
-	}
-
-	args[0] = parameter;
-	args[1] = llvm_chan;
-	args[2] = attr_number;
-	args[3] = params;
-
-	return ac_emit_llvm_intrinsic(ctx, "llvm.amdgcn.interp.mov",
-				      ctx->f32, args, 4, AC_FUNC_ATTR_READNONE);
-}
-
-LLVMValueRef
-ac_build_gep0(struct ac_llvm_context *ctx,
-	      LLVMValueRef base_ptr,
-	      LLVMValueRef index)
-{
-	LLVMValueRef indices[2] = {
-		LLVMConstInt(ctx->i32, 0, 0),
-		index,
-	};
-	return LLVMBuildGEP(ctx->builder, base_ptr,
-			    indices, 2, "");
-}
-
-void
-ac_build_indexed_store(struct ac_llvm_context *ctx,
-		       LLVMValueRef base_ptr, LLVMValueRef index,
-		       LLVMValueRef value)
-{
-	LLVMBuildStore(ctx->builder, value,
-		       ac_build_gep0(ctx, base_ptr, index));
-}
-
-/**
- * Build an LLVM bytecode indexed load using LLVMBuildGEP + LLVMBuildLoad.
- * It's equivalent to doing a load from &base_ptr[index].
- *
- * \param base_ptr  Where the array starts.
- * \param index     The element index into the array.
- * \param uniform   Whether the base_ptr and index can be assumed to be
- *                  dynamically uniform
- */
-LLVMValueRef
-ac_build_indexed_load(struct ac_llvm_context *ctx,
-		      LLVMValueRef base_ptr, LLVMValueRef index,
-		      bool uniform)
-{
-	LLVMValueRef pointer;
-
-	pointer = ac_build_gep0(ctx, base_ptr, index);
-	if (uniform)
-		LLVMSetMetadata(pointer, ctx->uniform_md_kind, ctx->empty_md);
-	return LLVMBuildLoad(ctx->builder, pointer, "");
-}
-
-/**
- * Do a load from &base_ptr[index], but also add a flag that it's loading
- * a constant from a dynamically uniform index.
- */
-LLVMValueRef
-ac_build_indexed_load_const(struct ac_llvm_context *ctx,
-			    LLVMValueRef base_ptr, LLVMValueRef index)
-{
-	LLVMValueRef result = ac_build_indexed_load(ctx, base_ptr, index, true);
-	LLVMSetMetadata(result, ctx->invariant_load_md_kind, ctx->empty_md);
-	return result;
-}
-
-/* TBUFFER_STORE_FORMAT_{X,XY,XYZ,XYZW} <- the suffix is selected by num_channels=1..4.
- * The type of vdata must be one of i32 (num_channels=1), v2i32 (num_channels=2),
- * or v4i32 (num_channels=3,4).
- */
-void
-ac_build_tbuffer_store(struct ac_llvm_context *ctx,
-		       LLVMValueRef rsrc,
-		       LLVMValueRef vdata,
-		       unsigned num_channels,
-		       LLVMValueRef vaddr,
-		       LLVMValueRef soffset,
-		       unsigned inst_offset,
-		       unsigned dfmt,
-		       unsigned nfmt,
-		       unsigned offen,
-		       unsigned idxen,
-		       unsigned glc,
-		       unsigned slc,
-		       unsigned tfe)
-{
-	LLVMValueRef args[] = {
-		rsrc,
-		vdata,
-		LLVMConstInt(ctx->i32, num_channels, 0),
-		vaddr,
-		soffset,
-		LLVMConstInt(ctx->i32, inst_offset, 0),
-		LLVMConstInt(ctx->i32, dfmt, 0),
-		LLVMConstInt(ctx->i32, nfmt, 0),
-		LLVMConstInt(ctx->i32, offen, 0),
-		LLVMConstInt(ctx->i32, idxen, 0),
-		LLVMConstInt(ctx->i32, glc, 0),
-		LLVMConstInt(ctx->i32, slc, 0),
-		LLVMConstInt(ctx->i32, tfe, 0)
-	};
-
-	/* The instruction offset field has 12 bits */
-	assert(offen || inst_offset < (1 << 12));
-
-	/* The intrinsic is overloaded, we need to add a type suffix for overloading to work. */
-	unsigned func = CLAMP(num_channels, 1, 3) - 1;
-	const char *types[] = {"i32", "v2i32", "v4i32"};
-	char name[256];
-	snprintf(name, sizeof(name), "llvm.SI.tbuffer.store.%s", types[func]);
-
-	ac_emit_llvm_intrinsic(ctx, name, ctx->voidt,
-			       args, ARRAY_SIZE(args), 0);
-}
-
-void
-ac_build_tbuffer_store_dwords(struct ac_llvm_context *ctx,
-			      LLVMValueRef rsrc,
-			      LLVMValueRef vdata,
-			      unsigned num_channels,
-			      LLVMValueRef vaddr,
-			      LLVMValueRef soffset,
-			      unsigned inst_offset)
-{
-	static unsigned dfmt[] = {
-		V_008F0C_BUF_DATA_FORMAT_32,
-		V_008F0C_BUF_DATA_FORMAT_32_32,
-		V_008F0C_BUF_DATA_FORMAT_32_32_32,
-		V_008F0C_BUF_DATA_FORMAT_32_32_32_32
-	};
-	assert(num_channels >= 1 && num_channels <= 4);
-
-	ac_build_tbuffer_store(ctx, rsrc, vdata, num_channels, vaddr, soffset,
-			       inst_offset, dfmt[num_channels - 1],
-			       V_008F0C_BUF_NUM_FORMAT_UINT, 1, 0, 1, 1, 0);
-}
-
-LLVMValueRef
-ac_build_buffer_load(struct ac_llvm_context *ctx,
-		     LLVMValueRef rsrc,
-		     int num_channels,
-		     LLVMValueRef vindex,
-		     LLVMValueRef voffset,
-		     LLVMValueRef soffset,
-		     unsigned inst_offset,
-		     unsigned glc,
-		     unsigned slc)
-{
-	unsigned func = CLAMP(num_channels, 1, 3) - 1;
-
-	if (HAVE_LLVM >= 0x309) {
-		LLVMValueRef args[] = {
-			LLVMBuildBitCast(ctx->builder, rsrc, ctx->v4i32, ""),
-			vindex ? vindex : LLVMConstInt(ctx->i32, 0, 0),
-			LLVMConstInt(ctx->i32, inst_offset, 0),
-			LLVMConstInt(ctx->i1, glc, 0),
-			LLVMConstInt(ctx->i1, slc, 0)
-		};
-
-		LLVMTypeRef types[] = {ctx->f32, LLVMVectorType(ctx->f32, 2),
-		                       ctx->v4f32};
-		const char *type_names[] = {"f32", "v2f32", "v4f32"};
-		char name[256];
-
-		if (voffset) {
-			args[2] = LLVMBuildAdd(ctx->builder, args[2], voffset,
-			                       "");
-		}
-
-		if (soffset) {
-			args[2] = LLVMBuildAdd(ctx->builder, args[2], soffset,
-			                       "");
-		}
-
-		snprintf(name, sizeof(name), "llvm.amdgcn.buffer.load.%s",
-		         type_names[func]);
-
-		return ac_emit_llvm_intrinsic(ctx, name, types[func], args,
-					      ARRAY_SIZE(args), AC_FUNC_ATTR_READONLY);
-	} else {
-		LLVMValueRef args[] = {
-			LLVMBuildBitCast(ctx->builder, rsrc, ctx->v16i8, ""),
-			voffset ? voffset : vindex,
-			soffset,
-			LLVMConstInt(ctx->i32, inst_offset, 0),
-			LLVMConstInt(ctx->i32, voffset ? 1 : 0, 0), // offen
-			LLVMConstInt(ctx->i32, vindex ? 1 : 0, 0), //idxen
-			LLVMConstInt(ctx->i32, glc, 0),
-			LLVMConstInt(ctx->i32, slc, 0),
-			LLVMConstInt(ctx->i32, 0, 0), // TFE
-		};
-
-		LLVMTypeRef types[] = {ctx->i32, LLVMVectorType(ctx->i32, 2),
-		                       ctx->v4i32};
-		const char *type_names[] = {"i32", "v2i32", "v4i32"};
-		const char *arg_type = "i32";
-		char name[256];
-
-		if (voffset && vindex) {
-			LLVMValueRef vaddr[] = {vindex, voffset};
-
-			arg_type = "v2i32";
-			args[1] = ac_build_gather_values(ctx, vaddr, 2);
-		}
-
-		snprintf(name, sizeof(name), "llvm.SI.buffer.load.dword.%s.%s",
-		         type_names[func], arg_type);
-
-		return ac_emit_llvm_intrinsic(ctx, name, types[func], args,
-					       ARRAY_SIZE(args), AC_FUNC_ATTR_READONLY);
-	}
-}
-
-/**
- * Set range metadata on an instruction.  This can only be used on load and
- * call instructions.  If you know an instruction can only produce the values
- * 0, 1, 2, you would do set_range_metadata(value, 0, 3);
- * \p lo is the minimum value inclusive.
- * \p hi is the maximum value exclusive.
- */
-static void set_range_metadata(struct ac_llvm_context *ctx,
-			       LLVMValueRef value, unsigned lo, unsigned hi)
-{
-	LLVMValueRef range_md, md_args[2];
-	LLVMTypeRef type = LLVMTypeOf(value);
-	LLVMContextRef context = LLVMGetTypeContext(type);
-
-	md_args[0] = LLVMConstInt(type, lo, false);
-	md_args[1] = LLVMConstInt(type, hi, false);
-	range_md = LLVMMDNodeInContext(context, md_args, 2);
-	LLVMSetMetadata(value, ctx->range_md_kind, range_md);
-}
-
-LLVMValueRef
-ac_get_thread_id(struct ac_llvm_context *ctx)
-{
-	LLVMValueRef tid;
-
-	if (HAVE_LLVM < 0x0308) {
-		tid = ac_emit_llvm_intrinsic(ctx, "llvm.SI.tid",
-					     ctx->i32,
-					     NULL, 0, AC_FUNC_ATTR_READNONE);
-	} else {
-		LLVMValueRef tid_args[2];
-		tid_args[0] = LLVMConstInt(ctx->i32, 0xffffffff, false);
-		tid_args[1] = LLVMConstInt(ctx->i32, 0, false);
-		tid_args[1] = ac_emit_llvm_intrinsic(ctx,
-						     "llvm.amdgcn.mbcnt.lo", ctx->i32,
-						     tid_args, 2, AC_FUNC_ATTR_READNONE);
-
-		tid = ac_emit_llvm_intrinsic(ctx, "llvm.amdgcn.mbcnt.hi",
-					     ctx->i32, tid_args,
-					     2, AC_FUNC_ATTR_READNONE);
-	}
-	set_range_metadata(ctx, tid, 0, 64);
-	return tid;
-}
-
-/*
- * SI implements derivatives using the local data store (LDS)
- * All writes to the LDS happen in all executing threads at
- * the same time. TID is the Thread ID for the current
- * thread and is a value between 0 and 63, representing
- * the thread's position in the wavefront.
- *
- * For the pixel shader threads are grouped into quads of four pixels.
- * The TIDs of the pixels of a quad are:
- *
- *  +------+------+
- *  |4n + 0|4n + 1|
- *  +------+------+
- *  |4n + 2|4n + 3|
- *  +------+------+
- *
- * So, masking the TID with 0xfffffffc yields the TID of the top left pixel
- * of the quad, masking with 0xfffffffd yields the TID of the top pixel of
- * the current pixel's column, and masking with 0xfffffffe yields the TID
- * of the left pixel of the current pixel's row.
- *
- * Adding 1 yields the TID of the pixel to the right of the left pixel, and
- * adding 2 yields the TID of the pixel below the top pixel.
- */
-LLVMValueRef
-ac_emit_ddxy(struct ac_llvm_context *ctx,
-	     bool has_ds_bpermute,
-	     uint32_t mask,
-	     int idx,
-	     LLVMValueRef lds,
-	     LLVMValueRef val)
-{
-	LLVMValueRef thread_id, tl, trbl, tl_tid, trbl_tid, args[2];
-	LLVMValueRef result;
-
-	thread_id = ac_get_thread_id(ctx);
-
-	tl_tid = LLVMBuildAnd(ctx->builder, thread_id,
-			      LLVMConstInt(ctx->i32, mask, false), "");
-
-	trbl_tid = LLVMBuildAdd(ctx->builder, tl_tid,
-				LLVMConstInt(ctx->i32, idx, false), "");
-
-	if (has_ds_bpermute) {
-		args[0] = LLVMBuildMul(ctx->builder, tl_tid,
-				       LLVMConstInt(ctx->i32, 4, false), "");
-		args[1] = val;
-		tl = ac_emit_llvm_intrinsic(ctx,
-					    "llvm.amdgcn.ds.bpermute", ctx->i32,
-					    args, 2, AC_FUNC_ATTR_READNONE);
-
-		args[0] = LLVMBuildMul(ctx->builder, trbl_tid,
-				       LLVMConstInt(ctx->i32, 4, false), "");
-		trbl = ac_emit_llvm_intrinsic(ctx,
-					      "llvm.amdgcn.ds.bpermute", ctx->i32,
-					      args, 2, AC_FUNC_ATTR_READNONE);
-	} else {
-		LLVMValueRef store_ptr, load_ptr0, load_ptr1;
-
-		store_ptr = ac_build_gep0(ctx, lds, thread_id);
-		load_ptr0 = ac_build_gep0(ctx, lds, tl_tid);
-		load_ptr1 = ac_build_gep0(ctx, lds, trbl_tid);
-
-		LLVMBuildStore(ctx->builder, val, store_ptr);
-		tl = LLVMBuildLoad(ctx->builder, load_ptr0, "");
-		trbl = LLVMBuildLoad(ctx->builder, load_ptr1, "");
-	}
-
-	tl = LLVMBuildBitCast(ctx->builder, tl, ctx->f32, "");
-	trbl = LLVMBuildBitCast(ctx->builder, trbl, ctx->f32, "");
-	result = LLVMBuildFSub(ctx->builder, trbl, tl, "");
-	return result;
-}