enum ac_float_mode float_mode, unsigned wave_size,
unsigned ballot_mask_bits)
{
- LLVMValueRef args[1];
-
ctx->context = LLVMContextCreate();
ctx->chip_class = chip_class;
ctx->i16 = LLVMIntTypeInContext(ctx->context, 16);
ctx->i32 = LLVMIntTypeInContext(ctx->context, 32);
ctx->i64 = LLVMIntTypeInContext(ctx->context, 64);
+ ctx->i128 = LLVMIntTypeInContext(ctx->context, 128);
ctx->intptr = ctx->i32;
ctx->f16 = LLVMHalfTypeInContext(ctx->context);
ctx->f32 = LLVMFloatTypeInContext(ctx->context);
ctx->f64 = LLVMDoubleTypeInContext(ctx->context);
ctx->v2i16 = LLVMVectorType(ctx->i16, 2);
+ ctx->v4i16 = LLVMVectorType(ctx->i16, 4);
+ ctx->v2f16 = LLVMVectorType(ctx->f16, 2);
+ ctx->v4f16 = LLVMVectorType(ctx->f16, 4);
ctx->v2i32 = LLVMVectorType(ctx->i32, 2);
ctx->v3i32 = LLVMVectorType(ctx->i32, 3);
ctx->v4i32 = LLVMVectorType(ctx->i32, 4);
ctx->i32_1 = LLVMConstInt(ctx->i32, 1, false);
ctx->i64_0 = LLVMConstInt(ctx->i64, 0, false);
ctx->i64_1 = LLVMConstInt(ctx->i64, 1, false);
+ ctx->i128_0 = LLVMConstInt(ctx->i128, 0, false);
+ ctx->i128_1 = LLVMConstInt(ctx->i128, 1, false);
ctx->f16_0 = LLVMConstReal(ctx->f16, 0.0);
ctx->f16_1 = LLVMConstReal(ctx->f16, 1.0);
ctx->f32_0 = LLVMConstReal(ctx->f32, 0.0);
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);
}
LLVMValueRef
-ac_build_shader_clock(struct ac_llvm_context *ctx)
+ac_build_shader_clock(struct ac_llvm_context *ctx, nir_scope scope)
{
- const char *intr = LLVM_VERSION_MAJOR >= 9 && ctx->chip_class >= GFX8 ?
- "llvm.amdgcn.s.memrealtime" : "llvm.readcyclecounter";
- LLVMValueRef tmp = ac_build_intrinsic(ctx, intr, ctx->i64, NULL, 0, 0);
+ const char *name = scope == NIR_SCOPE_DEVICE ? "llvm.amdgcn.s.memrealtime" : "llvm.amdgcn.s.memtime";
+ LLVMValueRef tmp = ac_build_intrinsic(ctx, name, ctx->i64, NULL, 0, 0);
return LLVMBuildBitCast(ctx->builder, tmp, ctx->v2i32, "");
}
LLVMValueRef ac_get_i1_sgpr_mask(struct ac_llvm_context *ctx,
LLVMValueRef value)
{
- const char *name = LLVM_VERSION_MAJOR >= 9 ? "llvm.amdgcn.icmp.i64.i1" : "llvm.amdgcn.icmp.i1";
+ const char *name;
+
+ if (LLVM_VERSION_MAJOR >= 9) {
+ if (ctx->wave_size == 64)
+ name = "llvm.amdgcn.icmp.i64.i1";
+ else
+ name = "llvm.amdgcn.icmp.i32.i1";
+ } else {
+ name = "llvm.amdgcn.icmp.i1";
+ }
LLVMValueRef args[3] = {
value,
ctx->i1false,
LLVMConstInt(ctx->i32, LLVMIntNE, 0),
};
- return ac_build_intrinsic(ctx, name, ctx->i64, args, 3,
+ return ac_build_intrinsic(ctx, name, ctx->iN_wavemask, args, 3,
AC_FUNC_ATTR_NOUNWIND |
AC_FUNC_ATTR_READNONE |
AC_FUNC_ATTR_CONVERGENT);
LLVMValueRef num,
LLVMValueRef den)
{
- /* If we do (num / den), LLVM >= 7.0 does:
- * return num * v_rcp_f32(den * (fabs(den) > 0x1.0p+96f ? 0x1.0p-32f : 1.0f));
- *
- * If we do (num * (1 / den)), LLVM does:
- * return num * v_rcp_f32(den);
- */
- LLVMValueRef one = LLVMConstReal(LLVMTypeOf(num), 1.0);
- LLVMValueRef rcp = LLVMBuildFDiv(ctx->builder, one, den, "");
- LLVMValueRef ret = LLVMBuildFMul(ctx->builder, num, rcp, "");
+ unsigned type_size = ac_get_type_size(LLVMTypeOf(den));
+ const char *name;
- /* Use v_rcp_f32 instead of precise division. */
- if (!LLVMIsConstant(ret))
- LLVMSetMetadata(ret, ctx->fpmath_md_kind, ctx->fpmath_md_2p5_ulp);
- return ret;
+ if (type_size == 2)
+ name = "llvm.amdgcn.rcp.f16";
+ else if (type_size == 4)
+ name = "llvm.amdgcn.rcp.f32";
+ else
+ name = "llvm.amdgcn.rcp.f64";
+
+ LLVMValueRef rcp = ac_build_intrinsic(ctx, name, LLVMTypeOf(den),
+ &den, 1, AC_FUNC_ATTR_READNONE);
+
+ return LLVMBuildFMul(ctx->builder, num, rcp, "");
}
/* See fast_idiv_by_const.h. */
LLVMValueRef vindex,
LLVMValueRef voffset,
LLVMValueRef soffset,
- unsigned num_channels,
- LLVMTypeRef return_channel_type,
unsigned cache_policy,
bool use_format,
bool structurized)
args[idx++] = voffset ? voffset : ctx->i32_0;
args[idx++] = soffset ? soffset : ctx->i32_0;
args[idx++] = LLVMConstInt(ctx->i32, cache_policy, 0);
- unsigned func = !ac_has_vec3_support(ctx->chip_class, use_format) && num_channels == 3 ? 4 : num_channels;
const char *indexing_kind = structurized ? "struct" : "raw";
char name[256], type_name[8];
- LLVMTypeRef type = func > 1 ? LLVMVectorType(return_channel_type, func) : return_channel_type;
- ac_build_type_name_for_intr(type, type_name, sizeof(type_name));
+ ac_build_type_name_for_intr(LLVMTypeOf(data), type_name, sizeof(type_name));
if (use_format) {
snprintf(name, sizeof(name), "llvm.amdgcn.%s.buffer.store.format.%s",
LLVMValueRef data,
LLVMValueRef vindex,
LLVMValueRef voffset,
- unsigned num_channels,
unsigned cache_policy)
{
- ac_build_buffer_store_common(ctx, rsrc, data, vindex,
- voffset, NULL, num_channels,
- ctx->f32, cache_policy,
- true, true);
+ ac_build_buffer_store_common(ctx, rsrc, data, vindex, voffset, NULL,
+ cache_policy, true, true);
}
/* TBUFFER_STORE_FORMAT_{X,XY,XYZ,XYZW} <- the suffix is selected by num_channels=1..4.
ac_build_buffer_store_common(ctx, rsrc, ac_to_float(ctx, vdata),
ctx->i32_0, voffset, offset,
- num_channels, ctx->f32,
cache_policy, false, false);
return;
}
const char *indexing_kind = structurized ? "struct" : "raw";
char name[256], type_name[8];
+ /* D16 is only supported on gfx8+ */
+ assert(!use_format ||
+ (channel_type != ctx->f16 && channel_type != ctx->i16) ||
+ ctx->chip_class >= GFX8);
+
LLVMTypeRef type = func > 1 ? LLVMVectorType(channel_type, func) : channel_type;
ac_build_type_name_for_intr(type, type_name, sizeof(type_name));
LLVMValueRef voffset,
unsigned num_channels,
unsigned cache_policy,
- bool can_speculate)
+ bool can_speculate,
+ bool d16)
{
return ac_build_buffer_load_common(ctx, rsrc, vindex, voffset,
- ctx->i32_0, num_channels, ctx->f32,
+ ctx->i32_0, num_channels,
+ d16 ? ctx->f16 : ctx->f32,
cache_policy, can_speculate,
true, true);
}
}
int log_recombine = 0;
- if (ctx->chip_class == GFX6 && !known_aligned) {
+ if ((ctx->chip_class == GFX6 || ctx->chip_class == GFX10) && !known_aligned) {
/* Avoid alignment restrictions by loading one byte at a time. */
load_num_channels <<= load_log_size;
log_recombine = load_log_size;
if (LLVM_VERSION_MAJOR >= 9) {
/* LLVM 9+ supports i8/i16 with struct/raw intrinsics. */
ac_build_buffer_store_common(ctx, rsrc, vdata, NULL,
- voffset, soffset, 1,
- ctx->i16, cache_policy,
+ voffset, soffset, cache_policy,
false, false);
} else {
unsigned dfmt = V_008F0C_BUF_DATA_FORMAT_16;
if (LLVM_VERSION_MAJOR >= 9) {
/* LLVM 9+ supports i8/i16 with struct/raw intrinsics. */
ac_build_buffer_store_common(ctx, rsrc, vdata, NULL,
- voffset, soffset, 1,
- ctx->i8, cache_policy,
+ voffset, soffset, cache_policy,
false, false);
} else {
unsigned dfmt = V_008F0C_BUF_DATA_FORMAT_8;
if (result_type == ctx->f16)
val = LLVMBuildZExt(ctx->builder, val, ctx->i32, "");
+ else if (result_type == ctx->v2f16)
+ val = LLVMBuildBitCast(ctx->builder, val, ctx->i32, "");
for (unsigned i = 0; i < 4; ++i) {
tl_lanes[i] = i & mask;
LLVMValueRef ac_build_fmin(struct ac_llvm_context *ctx, LLVMValueRef a,
LLVMValueRef b)
{
- char name[64];
- snprintf(name, sizeof(name), "llvm.minnum.f%d", ac_get_elem_bits(ctx, LLVMTypeOf(a)));
+ char name[64], type[64];
+
+ ac_build_type_name_for_intr(LLVMTypeOf(a), type, sizeof(type));
+ snprintf(name, sizeof(name), "llvm.minnum.%s", type);
LLVMValueRef args[2] = {a, b};
return ac_build_intrinsic(ctx, name, LLVMTypeOf(a), args, 2,
AC_FUNC_ATTR_READNONE);
LLVMValueRef ac_build_fmax(struct ac_llvm_context *ctx, LLVMValueRef a,
LLVMValueRef b)
{
- char name[64];
- snprintf(name, sizeof(name), "llvm.maxnum.f%d", ac_get_elem_bits(ctx, LLVMTypeOf(a)));
+ char name[64], type[64];
+
+ ac_build_type_name_for_intr(LLVMTypeOf(a), type, sizeof(type));
+ snprintf(name, sizeof(name), "llvm.maxnum.%s", type);
LLVMValueRef args[2] = {a, b};
return ac_build_intrinsic(ctx, name, LLVMTypeOf(a), args, 2,
AC_FUNC_ATTR_READNONE);
args[1] = LLVMConstInt(ctx->i32, a->enabled_channels, 0);
if (a->compr) {
- LLVMTypeRef i16 = LLVMInt16TypeInContext(ctx->context);
- LLVMTypeRef v2i16 = LLVMVectorType(i16, 2);
-
args[2] = LLVMBuildBitCast(ctx->builder, a->out[0],
- v2i16, "");
+ ctx->v2i16, "");
args[3] = LLVMBuildBitCast(ctx->builder, a->out[1],
- v2i16, "");
+ ctx->v2i16, "");
args[4] = LLVMConstInt(ctx->i1, a->done, 0);
args[5] = LLVMConstInt(ctx->i1, a->valid_mask, 0);
(a->lod ? 1 : 0) +
(a->level_zero ? 1 : 0) +
(a->derivs[0] ? 1 : 0) <= 1);
+ assert((a->min_lod ? 1 : 0) +
+ (a->lod ? 1 : 0) +
+ (a->level_zero ? 1 : 0) <= 1);
+ assert(!a->d16 || (ctx->chip_class >= GFX8 &&
+ a->opcode != ac_image_atomic &&
+ a->opcode != ac_image_atomic_cmpswap &&
+ a->opcode != ac_image_get_lod &&
+ a->opcode != ac_image_get_resinfo));
if (a->opcode == ac_image_get_lod) {
switch (dim) {
args[num_args++] = LLVMBuildBitCast(ctx->builder, a->coords[i], coord_type, "");
if (a->lod)
args[num_args++] = LLVMBuildBitCast(ctx->builder, a->lod, coord_type, "");
+ if (a->min_lod)
+ args[num_args++] = LLVMBuildBitCast(ctx->builder, a->min_lod, coord_type, "");
+
overload[num_overloads++] = sample ? ".f32" : ".i32";
args[num_args++] = a->resource;
char intr_name[96];
snprintf(intr_name, sizeof(intr_name),
"llvm.amdgcn.image.%s%s" /* base name */
- "%s%s%s" /* sample/gather modifiers */
+ "%s%s%s%s" /* sample/gather modifiers */
".%s.%s%s%s%s", /* dimension and type overloads */
name, atomic_subop,
a->compare ? ".c" : "",
lod_suffix ? ".l" :
a->derivs[0] ? ".d" :
a->level_zero ? ".lz" : "",
+ a->min_lod ? ".cl" : "",
a->offset ? ".o" : "",
dimname,
- atomic ? "i32" : "v4f32",
+ atomic ? "i32" : (a->d16 ? "v4f16" : "v4f32"),
overload[0], overload[1], overload[2]);
LLVMTypeRef retty;
else if (a->opcode == ac_image_store || a->opcode == ac_image_store_mip)
retty = ctx->voidt;
else
- retty = ctx->v4f32;
+ retty = a->d16 ? ctx->v4f16 : ctx->v4f32;
LLVMValueRef result =
ac_build_intrinsic(ctx, intr_name, retty, args, num_args,
a->attributes);
- if (!sample && retty == ctx->v4f32) {
- result = LLVMBuildBitCast(ctx->builder, result,
- ctx->v4i32, "");
- }
+ if (!sample && !atomic && retty != ctx->voidt)
+ result = ac_to_integer(ctx, result);
+
return result;
}
LLVMValueRef ac_build_cvt_pkrtz_f16(struct ac_llvm_context *ctx,
LLVMValueRef args[2])
{
- LLVMTypeRef v2f16 =
- LLVMVectorType(LLVMHalfTypeInContext(ctx->context), 2);
-
- return ac_build_intrinsic(ctx, "llvm.amdgcn.cvt.pkrtz", v2f16,
+ return ac_build_intrinsic(ctx, "llvm.amdgcn.cvt.pkrtz", ctx->v2f16,
args, 2, AC_FUNC_ATTR_READNONE);
}
LLVMValueRef src1, LLVMValueRef src2,
unsigned bitsize)
{
- LLVMTypeRef type;
- char *intr;
+ LLVMValueRef result;
- if (bitsize == 16) {
- intr = "llvm.amdgcn.fmed3.f16";
- type = ctx->f16;
- } else if (bitsize == 32) {
- intr = "llvm.amdgcn.fmed3.f32";
- type = ctx->f32;
+ if (bitsize == 64 || (bitsize == 16 && ctx->chip_class <= GFX8)) {
+ /* Lower 64-bit fmed because LLVM doesn't expose an intrinsic,
+ * or lower 16-bit fmed because it's only supported on GFX9+.
+ */
+ LLVMValueRef min1, min2, max1;
+
+ min1 = ac_build_fmin(ctx, src0, src1);
+ max1 = ac_build_fmax(ctx, src0, src1);
+ min2 = ac_build_fmin(ctx, max1, src2);
+
+ result = ac_build_fmax(ctx, min2, min1);
} else {
- intr = "llvm.amdgcn.fmed3.f64";
- type = ctx->f64;
+ LLVMTypeRef type;
+ char *intr;
+
+ if (bitsize == 16) {
+ intr = "llvm.amdgcn.fmed3.f16";
+ type = ctx->f16;
+ } else {
+ assert(bitsize == 32);
+ intr = "llvm.amdgcn.fmed3.f32";
+ type = ctx->f32;
+ }
+
+ LLVMValueRef params[] = {
+ src0,
+ src1,
+ src2,
+ };
+
+ result = ac_build_intrinsic(ctx, intr, type, params, 3,
+ AC_FUNC_ATTR_READNONE);
}
- LLVMValueRef params[] = {
- src0,
- src1,
- src2,
- };
- return ac_build_intrinsic(ctx, intr, type, params, 3,
- AC_FUNC_ATTR_READNONE);
+ if (ctx->chip_class < GFX9 && bitsize == 32) {
+ /* Only pre-GFX9 chips do not flush denorms. */
+ result = ac_build_canonicalize(ctx, result, bitsize);
+ }
+
+ return result;
}
LLVMValueRef ac_build_fract(struct ac_llvm_context *ctx, LLVMValueRef src0,
bitsize = ac_get_elem_bits(ctx, LLVMTypeOf(src0));
switch (bitsize) {
+ case 128:
+ result = ac_build_intrinsic(ctx, "llvm.ctpop.i128", ctx->i128,
+ (LLVMValueRef []) { src0 }, 1,
+ AC_FUNC_ATTR_READNONE);
+ result = LLVMBuildTrunc(ctx->builder, result, ctx->i32, "");
+ break;
case 64:
result = ac_build_intrinsic(ctx, "llvm.ctpop.i64", ctx->i64,
(LLVMValueRef []) { src0 }, 1,
LLVMValueRef main_fn,
uint8_t *vs_output_param_offset,
uint32_t num_outputs,
+ uint32_t skip_output_mask,
uint8_t *num_param_exports)
{
LLVMBasicBlockRef bb;
}
/* Eliminate constant and duplicated PARAM exports. */
- if (ac_eliminate_const_output(vs_output_param_offset,
- num_outputs, &exp) ||
- ac_eliminate_duplicated_output(ctx,
- vs_output_param_offset,
- num_outputs, &exports,
- &exp)) {
+ if (!((1u << target) & skip_output_mask) &&
+ (ac_eliminate_const_output(vs_output_param_offset,
+ num_outputs, &exp) ||
+ ac_eliminate_duplicated_output(ctx,
+ vs_output_param_offset,
+ num_outputs, &exports,
+ &exp))) {
removed_any = true;
} else {
exports.exp[exports.num++] = exp;
}
static LLVMValueRef
-_ac_build_readlane(struct ac_llvm_context *ctx, LLVMValueRef src, LLVMValueRef lane)
+_ac_build_readlane(struct ac_llvm_context *ctx, LLVMValueRef src,
+ LLVMValueRef lane, bool with_opt_barrier)
{
LLVMTypeRef type = LLVMTypeOf(src);
LLVMValueRef result;
- ac_build_optimization_barrier(ctx, &src);
+ if (with_opt_barrier)
+ ac_build_optimization_barrier(ctx, &src);
src = LLVMBuildZExt(ctx->builder, src, ctx->i32, "");
if (lane)
return LLVMBuildTrunc(ctx->builder, result, type, "");
}
-/**
- * Builds the "llvm.amdgcn.readlane" or "llvm.amdgcn.readfirstlane" intrinsic.
- * @param ctx
- * @param src
- * @param lane - id of the lane or NULL for the first active lane
- * @return value of the lane
- */
-LLVMValueRef
-ac_build_readlane(struct ac_llvm_context *ctx, LLVMValueRef src, LLVMValueRef lane)
+static LLVMValueRef
+ac_build_readlane_common(struct ac_llvm_context *ctx,
+ LLVMValueRef src, LLVMValueRef lane,
+ bool with_opt_barrier)
{
LLVMTypeRef src_type = LLVMTypeOf(src);
src = ac_to_integer(ctx, src);
LLVMBuildBitCast(ctx->builder, src, vec_type, "");
ret = LLVMGetUndef(vec_type);
for (unsigned i = 0; i < bits / 32; i++) {
+ LLVMValueRef ret_comp;
+
src = LLVMBuildExtractElement(ctx->builder, src_vector,
LLVMConstInt(ctx->i32, i, 0), "");
- LLVMValueRef ret_comp = _ac_build_readlane(ctx, src, lane);
+
+ ret_comp = _ac_build_readlane(ctx, src, lane,
+ with_opt_barrier);
+
ret = LLVMBuildInsertElement(ctx->builder, ret, ret_comp,
LLVMConstInt(ctx->i32, i, 0), "");
}
} else {
- ret = _ac_build_readlane(ctx, src, lane);
+ ret = _ac_build_readlane(ctx, src, lane, with_opt_barrier);
}
if (LLVMGetTypeKind(src_type) == LLVMPointerTypeKind)
return LLVMBuildBitCast(ctx->builder, ret, src_type, "");
}
+/**
+ * Builds the "llvm.amdgcn.readlane" or "llvm.amdgcn.readfirstlane" intrinsic.
+ *
+ * The optimization barrier is not needed if the value is the same in all lanes
+ * or if this is called in the outermost block.
+ *
+ * @param ctx
+ * @param src
+ * @param lane - id of the lane or NULL for the first active lane
+ * @return value of the lane
+ */
+LLVMValueRef ac_build_readlane_no_opt_barrier(struct ac_llvm_context *ctx,
+ LLVMValueRef src, LLVMValueRef lane)
+{
+ return ac_build_readlane_common(ctx, src, lane, false);
+}
+
+
+LLVMValueRef
+ac_build_readlane(struct ac_llvm_context *ctx, LLVMValueRef src, LLVMValueRef lane)
+{
+ return ac_build_readlane_common(ctx, src, lane, true);
+}
+
LLVMValueRef
ac_build_writelane(struct ac_llvm_context *ctx, LLVMValueRef src, LLVMValueRef value, LLVMValueRef lane)
{
(LLVMValueRef []) { mask, ctx->i32_0 },
2, AC_FUNC_ATTR_READNONE);
}
- LLVMValueRef mask_vec = LLVMBuildBitCast(ctx->builder, mask,
- LLVMVectorType(ctx->i32, 2),
- "");
+ LLVMValueRef mask_vec = LLVMBuildBitCast(ctx->builder, mask, ctx->v2i32, "");
LLVMValueRef mask_lo = LLVMBuildExtractElement(ctx->builder, mask_vec,
ctx->i32_0, "");
LLVMValueRef mask_hi = LLVMBuildExtractElement(ctx->builder, mask_vec,
_ac_build_permlane16(struct ac_llvm_context *ctx, LLVMValueRef src, uint64_t sel,
bool exchange_rows, bool bound_ctrl)
{
+ LLVMTypeRef type = LLVMTypeOf(src);
+ LLVMValueRef result;
+
+ src = LLVMBuildZExt(ctx->builder, src, ctx->i32, "");
+
LLVMValueRef args[6] = {
src,
src,
ctx->i1true, /* fi */
bound_ctrl ? ctx->i1true : ctx->i1false,
};
- return ac_build_intrinsic(ctx, exchange_rows ? "llvm.amdgcn.permlanex16"
- : "llvm.amdgcn.permlane16",
- ctx->i32, args, 6,
- AC_FUNC_ATTR_READNONE | AC_FUNC_ATTR_CONVERGENT);
+
+ result = ac_build_intrinsic(ctx, exchange_rows ? "llvm.amdgcn.permlanex16"
+ : "llvm.amdgcn.permlane16",
+ ctx->i32, args, 6,
+ AC_FUNC_ATTR_READNONE | AC_FUNC_ATTR_CONVERGENT);
+
+ return LLVMBuildTrunc(ctx->builder, result, type, "");
}
static LLVMValueRef
src = ac_to_integer(ctx, src);
unsigned bits = LLVMGetIntTypeWidth(LLVMTypeOf(src));
LLVMValueRef ret;
- if (bits == 32) {
- ret = _ac_build_permlane16(ctx, src, sel, exchange_rows,
- bound_ctrl);
- } else {
+ if (bits > 32) {
assert(bits % 32 == 0);
LLVMTypeRef vec_type = LLVMVectorType(ctx->i32, bits / 32);
LLVMValueRef src_vector =
LLVMConstInt(ctx->i32, i,
0), "");
}
+ } else {
+ ret = _ac_build_permlane16(ctx, src, sel, exchange_rows,
+ bound_ctrl);
}
return LLVMBuildBitCast(ctx->builder, ret, src_type, "");
}
}
/**
+ * \param src The value to shift.
+ * \param identity The value to use the first lane.
* \param maxprefix specifies that the result only needs to be correct for a
* prefix of this many threads
+ * \return src, shifted 1 lane up, and identity shifted into lane 0.
*/
static LLVMValueRef
-ac_build_scan(struct ac_llvm_context *ctx, nir_op op, LLVMValueRef src, LLVMValueRef identity,
- unsigned maxprefix, bool inclusive)
+ac_wavefront_shift_right_1(struct ac_llvm_context *ctx, LLVMValueRef src,
+ LLVMValueRef identity, unsigned maxprefix)
{
- LLVMValueRef result, tmp;
-
- if (inclusive) {
- result = src;
- } else if (ctx->chip_class >= GFX10) {
+ if (ctx->chip_class >= GFX10) {
/* wavefront shift_right by 1 on GFX10 (emulate dpp_wf_sr1) */
LLVMValueRef active, tmp1, tmp2;
LLVMValueRef tid = ac_get_thread_id(ctx);
LLVMBuildAnd(ctx->builder, tid,
LLVMConstInt(ctx->i32, 0x1f, false), ""),
LLVMConstInt(ctx->i32, 0x10, false), ""), "");
- src = LLVMBuildSelect(ctx->builder, active, tmp2, tmp1, "");
+ return LLVMBuildSelect(ctx->builder, active, tmp2, tmp1, "");
} else if (maxprefix > 16) {
active = LLVMBuildICmp(ctx->builder, LLVMIntEQ, tid,
LLVMConstInt(ctx->i32, 16, false), "");
- src = LLVMBuildSelect(ctx->builder, active, tmp2, tmp1, "");
+ return LLVMBuildSelect(ctx->builder, active, tmp2, tmp1, "");
}
-
- result = src;
} else if (ctx->chip_class >= GFX8) {
- src = ac_build_dpp(ctx, identity, src, dpp_wf_sr1, 0xf, 0xf, false);
- result = src;
- } else {
- /* wavefront shift_right by 1 on SI/CI */
- LLVMValueRef active, tmp1, tmp2;
- LLVMValueRef tid = ac_get_thread_id(ctx);
- tmp1 = ac_build_ds_swizzle(ctx, src, (1 << 15) | dpp_quad_perm(0, 0, 1, 2));
- tmp2 = ac_build_ds_swizzle(ctx, src, ds_pattern_bitmode(0x18, 0x03, 0x00));
- active = LLVMBuildICmp(ctx->builder, LLVMIntEQ,
- LLVMBuildAnd(ctx->builder, tid, LLVMConstInt(ctx->i32, 0x7, 0), ""),
- LLVMConstInt(ctx->i32, 0x4, 0), "");
- tmp1 = LLVMBuildSelect(ctx->builder, active, tmp2, tmp1, "");
- tmp2 = ac_build_ds_swizzle(ctx, src, ds_pattern_bitmode(0x10, 0x07, 0x00));
- active = LLVMBuildICmp(ctx->builder, LLVMIntEQ,
- LLVMBuildAnd(ctx->builder, tid, LLVMConstInt(ctx->i32, 0xf, 0), ""),
- LLVMConstInt(ctx->i32, 0x8, 0), "");
- tmp1 = LLVMBuildSelect(ctx->builder, active, tmp2, tmp1, "");
- tmp2 = ac_build_ds_swizzle(ctx, src, ds_pattern_bitmode(0x00, 0x0f, 0x00));
- active = LLVMBuildICmp(ctx->builder, LLVMIntEQ,
- LLVMBuildAnd(ctx->builder, tid, LLVMConstInt(ctx->i32, 0x1f, 0), ""),
- LLVMConstInt(ctx->i32, 0x10, 0), "");
- tmp1 = LLVMBuildSelect(ctx->builder, active, tmp2, tmp1, "");
- tmp2 = ac_build_readlane(ctx, src, LLVMConstInt(ctx->i32, 31, 0));
- active = LLVMBuildICmp(ctx->builder, LLVMIntEQ, tid, LLVMConstInt(ctx->i32, 32, 0), "");
- tmp1 = LLVMBuildSelect(ctx->builder, active, tmp2, tmp1, "");
- active = LLVMBuildICmp(ctx->builder, LLVMIntEQ, tid, LLVMConstInt(ctx->i32, 0, 0), "");
- src = LLVMBuildSelect(ctx->builder, active, identity, tmp1, "");
- result = src;
- }
+ return ac_build_dpp(ctx, identity, src, dpp_wf_sr1, 0xf, 0xf, false);
+ }
+
+ /* wavefront shift_right by 1 on SI/CI */
+ LLVMValueRef active, tmp1, tmp2;
+ LLVMValueRef tid = ac_get_thread_id(ctx);
+ tmp1 = ac_build_ds_swizzle(ctx, src, (1 << 15) | dpp_quad_perm(0, 0, 1, 2));
+ tmp2 = ac_build_ds_swizzle(ctx, src, ds_pattern_bitmode(0x18, 0x03, 0x00));
+ active = LLVMBuildICmp(ctx->builder, LLVMIntEQ,
+ LLVMBuildAnd(ctx->builder, tid, LLVMConstInt(ctx->i32, 0x7, 0), ""),
+ LLVMConstInt(ctx->i32, 0x4, 0), "");
+ tmp1 = LLVMBuildSelect(ctx->builder, active, tmp2, tmp1, "");
+ tmp2 = ac_build_ds_swizzle(ctx, src, ds_pattern_bitmode(0x10, 0x07, 0x00));
+ active = LLVMBuildICmp(ctx->builder, LLVMIntEQ,
+ LLVMBuildAnd(ctx->builder, tid, LLVMConstInt(ctx->i32, 0xf, 0), ""),
+ LLVMConstInt(ctx->i32, 0x8, 0), "");
+ tmp1 = LLVMBuildSelect(ctx->builder, active, tmp2, tmp1, "");
+ tmp2 = ac_build_ds_swizzle(ctx, src, ds_pattern_bitmode(0x00, 0x0f, 0x00));
+ active = LLVMBuildICmp(ctx->builder, LLVMIntEQ,
+ LLVMBuildAnd(ctx->builder, tid, LLVMConstInt(ctx->i32, 0x1f, 0), ""),
+ LLVMConstInt(ctx->i32, 0x10, 0), "");
+ tmp1 = LLVMBuildSelect(ctx->builder, active, tmp2, tmp1, "");
+ tmp2 = ac_build_readlane(ctx, src, LLVMConstInt(ctx->i32, 31, 0));
+ active = LLVMBuildICmp(ctx->builder, LLVMIntEQ, tid, LLVMConstInt(ctx->i32, 32, 0), "");
+ tmp1 = LLVMBuildSelect(ctx->builder, active, tmp2, tmp1, "");
+ active = LLVMBuildICmp(ctx->builder, LLVMIntEQ, tid, LLVMConstInt(ctx->i32, 0, 0), "");
+ return LLVMBuildSelect(ctx->builder, active, identity, tmp1, "");
+}
+
+/**
+ * \param maxprefix specifies that the result only needs to be correct for a
+ * prefix of this many threads
+ */
+static LLVMValueRef
+ac_build_scan(struct ac_llvm_context *ctx, nir_op op, LLVMValueRef src, LLVMValueRef identity,
+ unsigned maxprefix, bool inclusive)
+{
+ LLVMValueRef result, tmp;
+
+ if (!inclusive)
+ src = ac_wavefront_shift_right_1(ctx, src, identity, maxprefix);
+
+ result = src;
if (ctx->chip_class <= GFX7) {
assert(maxprefix == 64);
if (cluster_size == 32) return ac_build_wwm(ctx, result);
if (ctx->chip_class >= GFX8) {
- if (ctx->chip_class >= GFX10)
- swap = ac_build_readlane(ctx, result, LLVMConstInt(ctx->i32, 31, false));
- else
- swap = ac_build_dpp(ctx, identity, result, dpp_row_bcast31, 0xc, 0xf, false);
- result = ac_build_alu_op(ctx, result, swap, op);
- result = ac_build_readlane(ctx, result, LLVMConstInt(ctx->i32, 63, 0));
+ if (ctx->wave_size == 64) {
+ if (ctx->chip_class >= GFX10)
+ swap = ac_build_readlane(ctx, result, LLVMConstInt(ctx->i32, 31, false));
+ else
+ swap = ac_build_dpp(ctx, identity, result, dpp_row_bcast31, 0xc, 0xf, false);
+ result = ac_build_alu_op(ctx, result, swap, op);
+ result = ac_build_readlane(ctx, result, LLVMConstInt(ctx->i32, 63, 0));
+ }
+
return ac_build_wwm(ctx, result);
} else {
swap = ac_build_readlane(ctx, result, ctx->i32_0);
return LLVMBuildSExt(ctx->builder, result, ctx->i32, "");
}
+LLVMValueRef
+ac_build_is_helper_invocation(struct ac_llvm_context *ctx)
+{
+ if (!ctx->postponed_kill)
+ return ac_build_load_helper_invocation(ctx);
+
+ /* !(exact && postponed) */
+ LLVMValueRef exact = ac_build_intrinsic(ctx, "llvm.amdgcn.ps.live",
+ ctx->i1, NULL, 0,
+ AC_FUNC_ATTR_READNONE);
+
+ LLVMValueRef postponed = LLVMBuildLoad(ctx->builder, ctx->postponed_kill, "");
+ LLVMValueRef result = LLVMBuildAnd(ctx->builder, exact, postponed, "");
+
+ return LLVMBuildSelect(ctx->builder, result, ctx->i32_0,
+ LLVMConstInt(ctx->i32, 0xFFFFFFFF, false), "");
+}
+
LLVMValueRef ac_build_call(struct ac_llvm_context *ctx, LLVMValueRef func,
LLVMValueRef *args, unsigned num_args)
{
args->enabled_channels = mask;
}
+/* Send GS Alloc Req message from the first wave of the group to SPI.
+ * Message payload is:
+ * - bits 0..10: vertices in group
+ * - bits 12..22: primitives in group
+ */
+void ac_build_sendmsg_gs_alloc_req(struct ac_llvm_context *ctx, LLVMValueRef wave_id,
+ LLVMValueRef vtx_cnt, LLVMValueRef prim_cnt)
+{
+ LLVMBuilderRef builder = ctx->builder;
+ LLVMValueRef tmp;
+ bool export_dummy_prim = false;
+
+ /* HW workaround for a GPU hang with 100% culling.
+ * We always have to export at least 1 primitive.
+ * Export a degenerate triangle using vertex 0 for all 3 vertices.
+ */
+ if (prim_cnt == ctx->i32_0 && ctx->chip_class == GFX10) {
+ assert(vtx_cnt == ctx->i32_0);
+ prim_cnt = ctx->i32_1;
+ vtx_cnt = ctx->i32_1;
+ export_dummy_prim = true;
+ }
+
+ ac_build_ifcc(ctx, LLVMBuildICmp(builder, LLVMIntEQ, wave_id, ctx->i32_0, ""), 5020);
+
+ tmp = LLVMBuildShl(builder, prim_cnt, LLVMConstInt(ctx->i32, 12, false),"");
+ tmp = LLVMBuildOr(builder, tmp, vtx_cnt, "");
+ ac_build_sendmsg(ctx, AC_SENDMSG_GS_ALLOC_REQ, tmp);
+
+ if (export_dummy_prim) {
+ struct ac_ngg_prim prim = {};
+ /* The vertex indices are 0,0,0. */
+ prim.passthrough = ctx->i32_0;
+
+ struct ac_export_args pos = {};
+ pos.out[0] = pos.out[1] = pos.out[2] = pos.out[3] = ctx->f32_0;
+ pos.target = V_008DFC_SQ_EXP_POS;
+ pos.enabled_channels = 0xf;
+ pos.done = true;
+
+ ac_build_ifcc(ctx, LLVMBuildICmp(builder, LLVMIntEQ, ac_get_thread_id(ctx),
+ ctx->i32_0, ""), 5021);
+ ac_build_export_prim(ctx, &prim);
+ ac_build_export(ctx, &pos);
+ ac_build_endif(ctx, 5021);
+ }
+
+ ac_build_endif(ctx, 5020);
+}
+
+LLVMValueRef ac_pack_prim_export(struct ac_llvm_context *ctx,
+ const struct ac_ngg_prim *prim)
+{
+ /* The prim export format is:
+ * - bits 0..8: index 0
+ * - bit 9: edge flag 0
+ * - bits 10..18: index 1
+ * - bit 19: edge flag 1
+ * - bits 20..28: index 2
+ * - bit 29: edge flag 2
+ * - bit 31: null primitive (skip)
+ */
+ LLVMBuilderRef builder = ctx->builder;
+ LLVMValueRef tmp = LLVMBuildZExt(builder, prim->isnull, ctx->i32, "");
+ LLVMValueRef result = LLVMBuildShl(builder, tmp, LLVMConstInt(ctx->i32, 31, false), "");
+
+ for (unsigned i = 0; i < prim->num_vertices; ++i) {
+ tmp = LLVMBuildShl(builder, prim->index[i],
+ LLVMConstInt(ctx->i32, 10 * i, false), "");
+ result = LLVMBuildOr(builder, result, tmp, "");
+ tmp = LLVMBuildZExt(builder, prim->edgeflag[i], ctx->i32, "");
+ tmp = LLVMBuildShl(builder, tmp,
+ LLVMConstInt(ctx->i32, 10 * i + 9, false), "");
+ result = LLVMBuildOr(builder, result, tmp, "");
+ }
+ return result;
+}
+
+void ac_build_export_prim(struct ac_llvm_context *ctx,
+ const struct ac_ngg_prim *prim)
+{
+ struct ac_export_args args;
+
+ if (prim->passthrough) {
+ args.out[0] = prim->passthrough;
+ } else {
+ args.out[0] = ac_pack_prim_export(ctx, prim);
+ }
+
+ args.out[0] = LLVMBuildBitCast(ctx->builder, args.out[0], ctx->f32, "");
+ args.out[1] = LLVMGetUndef(ctx->f32);
+ args.out[2] = LLVMGetUndef(ctx->f32);
+ args.out[3] = LLVMGetUndef(ctx->f32);
+
+ args.target = V_008DFC_SQ_EXP_PRIM;
+ args.enabled_channels = 1;
+ args.done = true;
+ args.valid_mask = false;
+ args.compr = false;
+
+ ac_build_export(ctx, &args);
+}
+
static LLVMTypeRef
arg_llvm_type(enum ac_arg_type type, unsigned size, struct ac_llvm_context *ctx)
{
}
ctx->main_function = main_function;
+
+ if (LLVM_VERSION_MAJOR >= 11) {
+ /* Enable denormals for FP16 and FP64: */
+ LLVMAddTargetDependentFunctionAttr(main_function, "denormal-fp-math",
+ "ieee,ieee");
+ /* Disable denormals for FP32: */
+ LLVMAddTargetDependentFunctionAttr(main_function, "denormal-fp-math-f32",
+ "preserve-sign,preserve-sign");
+ }
return main_function;
}
+void ac_build_s_endpgm(struct ac_llvm_context *ctx)
+{
+ LLVMTypeRef calltype = LLVMFunctionType(ctx->voidt, NULL, 0, false);
+ LLVMValueRef code = LLVMConstInlineAsm(calltype, "s_endpgm", "", true, false);
+ LLVMBuildCall(ctx->builder, code, NULL, 0, "");
+}
+
+LLVMValueRef ac_prefix_bitcount(struct ac_llvm_context *ctx,
+ LLVMValueRef mask, LLVMValueRef index)
+{
+ LLVMBuilderRef builder = ctx->builder;
+ LLVMTypeRef type = LLVMTypeOf(mask);
+
+ LLVMValueRef bit = LLVMBuildShl(builder, LLVMConstInt(type, 1, 0),
+ LLVMBuildZExt(builder, index, type, ""), "");
+ LLVMValueRef prefix_bits = LLVMBuildSub(builder, bit, LLVMConstInt(type, 1, 0), "");
+ LLVMValueRef prefix_mask = LLVMBuildAnd(builder, mask, prefix_bits, "");
+ return ac_build_bit_count(ctx, prefix_mask);
+}
+
+/* Compute the prefix sum of the "mask" bit array with 128 elements (bits). */
+LLVMValueRef ac_prefix_bitcount_2x64(struct ac_llvm_context *ctx,
+ LLVMValueRef mask[2], LLVMValueRef index)
+{
+ LLVMBuilderRef builder = ctx->builder;
+#if 0
+ /* Reference version using i128. */
+ LLVMValueRef input_mask =
+ LLVMBuildBitCast(builder, ac_build_gather_values(ctx, mask, 2), ctx->i128, "");
+
+ return ac_prefix_bitcount(ctx, input_mask, index);
+#else
+ /* Optimized version using 2 64-bit masks. */
+ LLVMValueRef is_hi, is_0, c64, c128, all_bits;
+ LLVMValueRef prefix_mask[2], shift[2], mask_bcnt0, prefix_bcnt[2];
+
+ /* Compute the 128-bit prefix mask. */
+ c64 = LLVMConstInt(ctx->i32, 64, 0);
+ c128 = LLVMConstInt(ctx->i32, 128, 0);
+ all_bits = LLVMConstInt(ctx->i64, UINT64_MAX, 0);
+ /* The first index that can have non-zero high bits in the prefix mask is 65. */
+ is_hi = LLVMBuildICmp(builder, LLVMIntUGT, index, c64, "");
+ is_0 = LLVMBuildICmp(builder, LLVMIntEQ, index, ctx->i32_0, "");
+ mask_bcnt0 = ac_build_bit_count(ctx, mask[0]);
+
+ for (unsigned i = 0; i < 2; i++) {
+ shift[i] = LLVMBuildSub(builder, i ? c128 : c64, index, "");
+ /* For i==0, index==0, the right shift by 64 doesn't give the desired result,
+ * so we handle it by the is_0 select.
+ * For i==1, index==64, same story, so we handle it by the last is_hi select.
+ * For i==0, index==64, we shift by 0, which is what we want.
+ */
+ prefix_mask[i] = LLVMBuildLShr(builder, all_bits,
+ LLVMBuildZExt(builder, shift[i], ctx->i64, ""), "");
+ prefix_mask[i] = LLVMBuildAnd(builder, mask[i], prefix_mask[i], "");
+ prefix_bcnt[i] = ac_build_bit_count(ctx, prefix_mask[i]);
+ }
+
+ prefix_bcnt[0] = LLVMBuildSelect(builder, is_0, ctx->i32_0, prefix_bcnt[0], "");
+ prefix_bcnt[0] = LLVMBuildSelect(builder, is_hi, mask_bcnt0, prefix_bcnt[0], "");
+ prefix_bcnt[1] = LLVMBuildSelect(builder, is_hi, prefix_bcnt[1], ctx->i32_0, "");
+
+ return LLVMBuildAdd(builder, prefix_bcnt[0], prefix_bcnt[1], "");
+#endif
+}
+
+/**
+ * Convert triangle strip indices to triangle indices. This is used to decompose
+ * triangle strips into triangles.
+ */
+void ac_build_triangle_strip_indices_to_triangle(struct ac_llvm_context *ctx,
+ LLVMValueRef is_odd,
+ LLVMValueRef flatshade_first,
+ LLVMValueRef index[3])
+{
+ LLVMBuilderRef builder = ctx->builder;
+ LLVMValueRef out[3];
+
+ /* We need to change the vertex order for odd triangles to get correct
+ * front/back facing by swapping 2 vertex indices, but we also have to
+ * keep the provoking vertex in the same place.
+ *
+ * If the first vertex is provoking, swap index 1 and 2.
+ * If the last vertex is provoking, swap index 0 and 1.
+ */
+ out[0] = LLVMBuildSelect(builder, flatshade_first,
+ index[0],
+ LLVMBuildSelect(builder, is_odd,
+ index[1], index[0], ""), "");
+ out[1] = LLVMBuildSelect(builder, flatshade_first,
+ LLVMBuildSelect(builder, is_odd,
+ index[2], index[1], ""),
+ LLVMBuildSelect(builder, is_odd,
+ index[0], index[1], ""), "");
+ out[2] = LLVMBuildSelect(builder, flatshade_first,
+ LLVMBuildSelect(builder, is_odd,
+ index[1], index[2], ""),
+ index[2], "");
+ memcpy(index, out, sizeof(out));
+}
projects / mesa.git / blobdiff