[Mesa-dev] [PATCH 9/9] ac, radeonsi: use ac_build_gather_values more

Marek Olšák maraeo at gmail.com
Tue Aug 21 03:23:39 UTC 2018


From: Marek Olšák <marek.olsak at amd.com>

---
 src/amd/common/ac_nir_to_llvm.c               | 14 +++--------
 src/gallium/drivers/radeonsi/si_shader.c      |  8 +++---
 .../drivers/radeonsi/si_shader_tgsi_mem.c     | 25 +++++++------------
 .../drivers/radeonsi/si_shader_tgsi_setup.c   | 17 ++++---------
 4 files changed, 20 insertions(+), 44 deletions(-)

diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
index 537ac33c044..700e48e14b7 100644
--- a/src/amd/common/ac_nir_to_llvm.c
+++ b/src/amd/common/ac_nir_to_llvm.c
@@ -479,35 +479,30 @@ static LLVMValueRef emit_pack_half_2x16(struct ac_llvm_context *ctx,
 	comp[1] = LLVMBuildExtractElement(ctx->builder, src0, ctx->i32_1, "");
 
 	return LLVMBuildBitCast(ctx->builder, ac_build_cvt_pkrtz_f16(ctx, comp),
 				ctx->i32, "");
 }
 
 static LLVMValueRef emit_unpack_half_2x16(struct ac_llvm_context *ctx,
 					  LLVMValueRef src0)
 {
 	LLVMValueRef const16 = LLVMConstInt(ctx->i32, 16, false);
-	LLVMValueRef temps[2], result, val;
+	LLVMValueRef temps[2], val;
 	int i;
 
 	for (i = 0; i < 2; i++) {
 		val = i == 1 ? LLVMBuildLShr(ctx->builder, src0, const16, "") : src0;
 		val = LLVMBuildTrunc(ctx->builder, val, ctx->i16, "");
 		val = LLVMBuildBitCast(ctx->builder, val, ctx->f16, "");
 		temps[i] = LLVMBuildFPExt(ctx->builder, val, ctx->f32, "");
 	}
-
-	result = LLVMBuildInsertElement(ctx->builder, LLVMGetUndef(ctx->v2f32), temps[0],
-					ctx->i32_0, "");
-	result = LLVMBuildInsertElement(ctx->builder, result, temps[1],
-					ctx->i32_1, "");
-	return result;
+	return ac_build_gather_values(ctx, temps, 2);
 }
 
 static LLVMValueRef emit_ddxy(struct ac_nir_context *ctx,
 			      nir_op op,
 			      LLVMValueRef src0)
 {
 	unsigned mask;
 	int idx;
 	LLVMValueRef result;
 
@@ -997,24 +992,21 @@ static void visit_alu(struct ac_nir_context *ctx, const nir_alu_instr *instr)
 		LLVMValueRef tmp = LLVMBuildBitCast(ctx->ac.builder, src[0],
 						    ctx->ac.v2i32,
 						    "");
 		result = LLVMBuildExtractElement(ctx->ac.builder, tmp,
 						 ctx->ac.i32_1, "");
 		break;
 	}
 
 	case nir_op_pack_64_2x32_split: {
 		LLVMValueRef tmp = LLVMGetUndef(ctx->ac.v2i32);
-		tmp = LLVMBuildInsertElement(ctx->ac.builder, tmp,
-					     src[0], ctx->ac.i32_0, "");
-		tmp = LLVMBuildInsertElement(ctx->ac.builder, tmp,
-					     src[1], ctx->ac.i32_1, "");
+		tmp = ac_build_gather_values(&ctx->ac, src, 2);
 		result = LLVMBuildBitCast(ctx->ac.builder, tmp, ctx->ac.i64, "");
 		break;
 	}
 
 	case nir_op_cube_face_coord: {
 		src[0] = ac_to_float(&ctx->ac, src[0]);
 		LLVMValueRef results[2];
 		LLVMValueRef in[3];
 		for (unsigned chan = 0; chan < 3; chan++)
 			in[chan] = ac_llvm_extract_elem(&ctx->ac, src[0], chan);
diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c
index 66fe5fad218..cfd99b61601 100644
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -2717,26 +2717,24 @@ static void emit_streamout_output(struct si_shader_context *ctx,
 
 	/* Pack the output. */
 	LLVMValueRef vdata = NULL;
 
 	switch (num_comps) {
 	case 1: /* as i32 */
 		vdata = out[0];
 		break;
 	case 2: /* as v2i32 */
 	case 3: /* as v4i32 (aligned to 4) */
+		out[3] = LLVMGetUndef(ctx->i32);
+		/* fall through */
 	case 4: /* as v4i32 */
-		vdata = LLVMGetUndef(LLVMVectorType(ctx->i32, util_next_power_of_two(num_comps)));
-		for (int j = 0; j < num_comps; j++) {
-			vdata = LLVMBuildInsertElement(ctx->ac.builder, vdata, out[j],
-						       LLVMConstInt(ctx->i32, j, 0), "");
-		}
+		vdata = ac_build_gather_values(&ctx->ac, out, util_next_power_of_two(num_comps));
 		break;
 	}
 
 	ac_build_buffer_store_dword(&ctx->ac, so_buffers[buf_idx],
 				    vdata, num_comps,
 				    so_write_offsets[buf_idx],
 				    ctx->i32_0,
 				    stream_out->dst_offset * 4, 1, 1, true, false);
 }
 
diff --git a/src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c b/src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c
index 54a0413e464..8e0578b4d5e 100644
--- a/src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c
+++ b/src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c
@@ -546,50 +546,43 @@ static void store_emit_buffer(struct si_shader_context *ctx,
 			      unsigned cache_policy,
 			      bool writeonly_memory)
 {
 	LLVMBuilderRef builder = ctx->ac.builder;
 	LLVMValueRef base_data = value;
 	LLVMValueRef base_offset = voffset;
 
 	while (writemask) {
 		int start, count;
 		const char *intrinsic_name;
-		LLVMValueRef data, voff, tmp;
+		LLVMValueRef data, voff;
 
 		u_bit_scan_consecutive_range(&writemask, &start, &count);
 
 		/* Due to an LLVM limitation, split 3-element writes
 		 * into a 2-element and a 1-element write. */
 		if (count == 3) {
 			writemask |= 1 << (start + 2);
 			count = 2;
 		}
 
 		if (count == 4) {
 			data = base_data;
 			intrinsic_name = "llvm.amdgcn.buffer.store.v4f32";
 		} else if (count == 2) {
-			LLVMTypeRef v2f32 = LLVMVectorType(ctx->f32, 2);
-
-			tmp = LLVMBuildExtractElement(
-				builder, base_data,
-				LLVMConstInt(ctx->i32, start, 0), "");
-			data = LLVMBuildInsertElement(
-				builder, LLVMGetUndef(v2f32), tmp,
-				ctx->i32_0, "");
-
-			tmp = LLVMBuildExtractElement(
-				builder, base_data,
-				LLVMConstInt(ctx->i32, start + 1, 0), "");
-			data = LLVMBuildInsertElement(
-				builder, data, tmp, ctx->i32_1, "");
-
+			LLVMValueRef values[2] = {
+				LLVMBuildExtractElement(builder, base_data,
+							LLVMConstInt(ctx->i32, start, 0), ""),
+				LLVMBuildExtractElement(builder, base_data,
+							LLVMConstInt(ctx->i32, start + 1, 0), ""),
+			};
+
+			data = ac_build_gather_values(&ctx->ac, values, 2);
 			intrinsic_name = "llvm.amdgcn.buffer.store.v2f32";
 		} else {
 			assert(count == 1);
 			data = LLVMBuildExtractElement(
 				builder, base_data,
 				LLVMConstInt(ctx->i32, start, 0), "");
 			intrinsic_name = "llvm.amdgcn.buffer.store.f32";
 		}
 
 		voff = base_offset;
diff --git a/src/gallium/drivers/radeonsi/si_shader_tgsi_setup.c b/src/gallium/drivers/radeonsi/si_shader_tgsi_setup.c
index 1f37b0ba37d..20164939cb7 100644
--- a/src/gallium/drivers/radeonsi/si_shader_tgsi_setup.c
+++ b/src/gallium/drivers/radeonsi/si_shader_tgsi_setup.c
@@ -298,32 +298,25 @@ get_pointer_into_array(struct si_shader_context *ctx,
 	return LLVMBuildGEP(ctx->ac.builder, alloca, idxs, 2, "");
 }
 
 LLVMValueRef
 si_llvm_emit_fetch_64bit(struct lp_build_tgsi_context *bld_base,
 			 LLVMTypeRef type,
 			 LLVMValueRef ptr,
 			 LLVMValueRef ptr2)
 {
 	struct si_shader_context *ctx = si_shader_context(bld_base);
-	LLVMValueRef result;
-
-	result = LLVMGetUndef(LLVMVectorType(ctx->i32, 2));
-
-	result = LLVMBuildInsertElement(ctx->ac.builder,
-					result,
-					ac_to_integer(&ctx->ac, ptr),
-					ctx->i32_0, "");
-	result = LLVMBuildInsertElement(ctx->ac.builder,
-					result,
-					ac_to_integer(&ctx->ac, ptr2),
-					ctx->i32_1, "");
+	LLVMValueRef values[2] = {
+		ac_to_integer(&ctx->ac, ptr),
+		ac_to_integer(&ctx->ac, ptr2),
+	};
+	LLVMValueRef result = ac_build_gather_values(&ctx->ac, values, 2);
 	return LLVMBuildBitCast(ctx->ac.builder, result, type, "");
 }
 
 static LLVMValueRef
 emit_array_fetch(struct lp_build_tgsi_context *bld_base,
 		 unsigned File, enum tgsi_opcode_type type,
 		 struct tgsi_declaration_range range,
 		 unsigned swizzle)
 {
 	struct si_shader_context *ctx = si_shader_context(bld_base);
-- 
2.17.1



More information about the mesa-dev mailing list