diff options
Diffstat (limited to 'src/intel/compiler/brw_vec4.cpp')
| -rw-r--r-- | src/intel/compiler/brw_vec4.cpp | 50 |
1 files changed, 32 insertions, 18 deletions
diff --git a/src/intel/compiler/brw_vec4.cpp b/src/intel/compiler/brw_vec4.cpp index 0909ddb5861..e27be8fc254 100644 --- a/src/intel/compiler/brw_vec4.cpp +++ b/src/intel/compiler/brw_vec4.cpp @@ -1948,6 +1948,24 @@ vec4_visitor::emit_shader_time_write(int shader_time_subindex, src_reg value) inst->mlen = 2; } +static bool +is_align1_df(vec4_instruction *inst) +{ + switch (inst->opcode) { + case VEC4_OPCODE_DOUBLE_TO_F32: + case VEC4_OPCODE_DOUBLE_TO_D32: + case VEC4_OPCODE_DOUBLE_TO_U32: + case VEC4_OPCODE_TO_DOUBLE: + case VEC4_OPCODE_PICK_LOW_32BIT: + case VEC4_OPCODE_PICK_HIGH_32BIT: + case VEC4_OPCODE_SET_LOW_32BIT: + case VEC4_OPCODE_SET_HIGH_32BIT: + return true; + default: + return false; + } +} + void vec4_visitor::convert_to_hw_regs() { @@ -2005,6 +2023,20 @@ vec4_visitor::convert_to_hw_regs() apply_logical_swizzle(®, inst, i); src = reg; + + /* From IVB PRM, vol4, part3, "General Restrictions on Regioning + * Parameters": + * + * "If ExecSize = Width and HorzStride ≠ 0, VertStride must be set + * to Width * HorzStride." + * + * We can break this rule with DF sources on DF align1 + * instructions, because the exec_size would be 4 and width is 4. + * As we know we are not accessing to next GRF, it is safe to + * set vstride to the formula given by the rule itself. + */ + if (is_align1_df(inst) && (cvt(inst->exec_size) - 1) == src.width) + src.vstride = src.width + src.hstride; } if (inst->is_3src(devinfo)) { @@ -2262,24 +2294,6 @@ vec4_visitor::lower_simd_width() return progress; } -static bool -is_align1_df(vec4_instruction *inst) -{ - switch (inst->opcode) { - case VEC4_OPCODE_DOUBLE_TO_F32: - case VEC4_OPCODE_DOUBLE_TO_D32: - case VEC4_OPCODE_DOUBLE_TO_U32: - case VEC4_OPCODE_TO_DOUBLE: - case VEC4_OPCODE_PICK_LOW_32BIT: - case VEC4_OPCODE_PICK_HIGH_32BIT: - case VEC4_OPCODE_SET_LOW_32BIT: - case VEC4_OPCODE_SET_HIGH_32BIT: - return true; - default: - return false; - } -} - static brw_predicate scalarize_predicate(brw_predicate predicate, unsigned writemask) { |