*
* Although the result values can be scaled to an arbitrary bit width specified
* by dst_width, the actual result type will have the same width.
+ *
+ * Ex: src = { float, float, float, float }
+ * return { i32, i32, i32, i32 } where each value is in [0, 2^dst_width-1].
*/
LLVMValueRef
lp_build_clamped_float_to_unsigned_norm(LLVMBuilderRef builder,
scale = (double)mask/ubound;
bias = (double)((unsigned long long)1 << (mantissa - n));
- res = LLVMBuildMul(builder, src, lp_build_const_scalar(src_type, scale), "");
- res = LLVMBuildAdd(builder, res, lp_build_const_scalar(src_type, bias), "");
+ res = LLVMBuildMul(builder, src, lp_build_const_vec(src_type, scale), "");
+ res = LLVMBuildAdd(builder, res, lp_build_const_vec(src_type, bias), "");
res = LLVMBuildBitCast(builder, res, int_vec_type, "");
if(dst_width > n) {
int shift = dst_width - n;
- res = LLVMBuildShl(builder, res, lp_build_int_const_scalar(src_type, shift), "");
+ res = LLVMBuildShl(builder, res, lp_build_const_int_vec(src_type, shift), "");
/* TODO: Fill in the empty lower bits for additional precision? */
/* YES: this fixes progs/trivial/tri-z-eq.c.
#if 0
{
LLVMValueRef msb;
- msb = LLVMBuildLShr(builder, res, lp_build_int_const_scalar(src_type, dst_width - 1), "");
- msb = LLVMBuildShl(builder, msb, lp_build_int_const_scalar(src_type, shift), "");
- msb = LLVMBuildSub(builder, msb, lp_build_int_const_scalar(src_type, 1), "");
+ msb = LLVMBuildLShr(builder, res, lp_build_const_int_vec(src_type, dst_width - 1), "");
+ msb = LLVMBuildShl(builder, msb, lp_build_const_int_vec(src_type, shift), "");
+ msb = LLVMBuildSub(builder, msb, lp_build_const_int_vec(src_type, 1), "");
res = LLVMBuildOr(builder, res, msb, "");
}
#elif 0
while(shift > 0) {
- res = LLVMBuildOr(builder, res, LLVMBuildLShr(builder, res, lp_build_int_const_scalar(src_type, n), ""), "");
+ res = LLVMBuildOr(builder, res, LLVMBuildLShr(builder, res, lp_build_const_int_vec(src_type, n), ""), "");
shift -= n;
n *= 2;
}
#endif
}
else
- res = LLVMBuildAnd(builder, res, lp_build_int_const_scalar(src_type, mask), "");
+ res = LLVMBuildAnd(builder, res, lp_build_const_int_vec(src_type, mask), "");
return res;
}
/**
* Inverse of lp_build_clamped_float_to_unsigned_norm above.
+ * Ex: src = { i32, i32, i32, i32 } with values in range [0, 2^src_width-1]
+ * return {float, float, float, float} with values in range [0, 1].
*/
LLVMValueRef
lp_build_unsigned_norm_to_float(LLVMBuilderRef builder,
if(src_width > mantissa) {
int shift = src_width - mantissa;
- res = LLVMBuildLShr(builder, res, lp_build_int_const_scalar(dst_type, shift), "");
+ res = LLVMBuildLShr(builder, res, lp_build_const_int_vec(dst_type, shift), "");
}
- bias_ = lp_build_const_scalar(dst_type, bias);
+ bias_ = lp_build_const_vec(dst_type, bias);
res = LLVMBuildOr(builder,
res,
res = LLVMBuildBitCast(builder, res, vec_type, "");
res = LLVMBuildSub(builder, res, bias_, "");
- res = LLVMBuildMul(builder, res, lp_build_const_scalar(dst_type, scale), "");
+ res = LLVMBuildMul(builder, res, lp_build_const_vec(dst_type, scale), "");
return res;
}
unsigned num_tmps;
unsigned i;
- /* Register width must remain constant */
- assert(src_type.width * src_type.length == dst_type.width * dst_type.length);
-
/* We must not loose or gain channels. Only precision */
assert(src_type.length * num_srcs == dst_type.length * num_dsts);
assert(src_type.length <= LP_MAX_VECTOR_LENGTH);
assert(dst_type.length <= LP_MAX_VECTOR_LENGTH);
+ assert(num_srcs <= LP_MAX_VECTOR_LENGTH);
+ assert(num_dsts <= LP_MAX_VECTOR_LENGTH);
tmp_type = src_type;
- for(i = 0; i < num_srcs; ++i)
+ for(i = 0; i < num_srcs; ++i) {
+ assert(lp_check_value(src_type, src[i]));
tmp[i] = src[i];
+ }
num_tmps = num_srcs;
/*
if(dst_min == 0.0)
thres = bld.zero;
else
- thres = lp_build_const_scalar(src_type, dst_min);
+ thres = lp_build_const_vec(src_type, dst_min);
for(i = 0; i < num_tmps; ++i)
tmp[i] = lp_build_max(&bld, tmp[i], thres);
}
if(dst_max == 1.0)
thres = bld.one;
else
- thres = lp_build_const_scalar(src_type, dst_max);
+ thres = lp_build_const_vec(src_type, dst_max);
for(i = 0; i < num_tmps; ++i)
tmp[i] = lp_build_min(&bld, tmp[i], thres);
}
LLVMTypeRef tmp_vec_type;
if (dst_scale != 1.0) {
- LLVMValueRef scale = lp_build_const_scalar(tmp_type, dst_scale);
+ LLVMValueRef scale = lp_build_const_vec(tmp_type, dst_scale);
for(i = 0; i < num_tmps; ++i)
tmp[i] = LLVMBuildMul(builder, tmp[i], scale, "");
}
/* FIXME: compensate different offsets too */
if(src_shift > dst_shift) {
- LLVMValueRef shift = lp_build_int_const_scalar(tmp_type, src_shift - dst_shift);
+ LLVMValueRef shift = lp_build_const_int_vec(tmp_type, src_shift - dst_shift);
for(i = 0; i < num_tmps; ++i)
if(src_type.sign)
tmp[i] = LLVMBuildAShr(builder, tmp[i], shift, "");
/*
* Truncate or expand bit width
+ *
+ * No data conversion should happen here, although the sign bits are
+ * crucial to avoid bad clamping.
*/
- assert(!tmp_type.floating || tmp_type.width == dst_type.width);
+ {
+ struct lp_type new_type;
- if(tmp_type.width > dst_type.width) {
- assert(num_dsts == 1);
- tmp[0] = lp_build_pack(builder, tmp_type, dst_type, TRUE, tmp, num_tmps);
- tmp_type.width = dst_type.width;
- tmp_type.length = dst_type.length;
- num_tmps = 1;
- }
+ new_type = tmp_type;
+ new_type.sign = dst_type.sign;
+ new_type.width = dst_type.width;
+ new_type.length = dst_type.length;
+
+ lp_build_resize(builder, tmp_type, new_type, tmp, num_srcs, tmp, num_dsts);
- if(tmp_type.width < dst_type.width) {
- assert(num_tmps == 1);
- lp_build_unpack(builder, tmp_type, dst_type, tmp[0], tmp, num_dsts);
- tmp_type.width = dst_type.width;
- tmp_type.length = dst_type.length;
+ tmp_type = new_type;
num_tmps = num_dsts;
}
- assert(tmp_type.width == dst_type.width);
- assert(tmp_type.length == dst_type.length);
- assert(num_tmps == num_dsts);
-
/*
* Scale to the widest range
*/
}
if (src_scale != 1.0) {
- LLVMValueRef scale = lp_build_const_scalar(tmp_type, 1.0/src_scale);
+ LLVMValueRef scale = lp_build_const_vec(tmp_type, 1.0/src_scale);
for(i = 0; i < num_tmps; ++i)
tmp[i] = LLVMBuildMul(builder, tmp[i], scale, "");
}
/* FIXME: compensate different offsets too */
if(src_shift < dst_shift) {
- LLVMValueRef shift = lp_build_int_const_scalar(tmp_type, dst_shift - src_shift);
+ LLVMValueRef shift = lp_build_const_int_vec(tmp_type, dst_shift - src_shift);
for(i = 0; i < num_tmps; ++i)
tmp[i] = LLVMBuildShl(builder, tmp[i], shift, "");
}
}
- for(i = 0; i < num_dsts; ++i)
+ for(i = 0; i < num_dsts; ++i) {
dst[i] = tmp[i];
+ assert(lp_check_value(dst_type, dst[i]));
+ }
}
projects / mesa.git / blobdiff