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Diffstat (limited to 'src/intel/compiler/brw_vec4_nir.cpp')
-rw-r--r--src/intel/compiler/brw_vec4_nir.cpp97
1 files changed, 49 insertions, 48 deletions
diff --git a/src/intel/compiler/brw_vec4_nir.cpp b/src/intel/compiler/brw_vec4_nir.cpp
index 9d9ded2b965..a82d52088a8 100644
--- a/src/intel/compiler/brw_vec4_nir.cpp
+++ b/src/intel/compiler/brw_vec4_nir.cpp
@@ -353,6 +353,53 @@ vec4_visitor::get_indirect_offset(nir_intrinsic_instr *instr)
return get_nir_src(*offset_src, BRW_REGISTER_TYPE_UD, 1);
}
+static src_reg
+setup_imm_df(const vec4_builder &bld, double v)
+{
+ const gen_device_info *devinfo = bld.shader->devinfo;
+ assert(devinfo->gen >= 7);
+
+ if (devinfo->gen >= 8)
+ return brw_imm_df(v);
+
+ /* gen7.5 does not support DF immediates straighforward but the DIM
+ * instruction allows to set the 64-bit immediate value.
+ */
+ if (devinfo->is_haswell) {
+ const vec4_builder ubld = bld.exec_all();
+ const dst_reg dst = bld.vgrf(BRW_REGISTER_TYPE_DF);
+ ubld.DIM(dst, brw_imm_df(v));
+ return swizzle(src_reg(dst), BRW_SWIZZLE_XXXX);
+ }
+
+ /* gen7 does not support DF immediates */
+ union {
+ double d;
+ struct {
+ uint32_t i1;
+ uint32_t i2;
+ };
+ } di;
+
+ di.d = v;
+
+ /* Write the low 32-bit of the constant to the X:UD channel and the
+ * high 32-bit to the Y:UD channel to build the constant in a VGRF.
+ * We have to do this twice (offset 0 and offset 1), since a DF VGRF takes
+ * two SIMD8 registers in SIMD4x2 execution. Finally, return a swizzle
+ * XXXX so any access to the VGRF only reads the constant data in these
+ * channels.
+ */
+ const dst_reg tmp = bld.vgrf(BRW_REGISTER_TYPE_UD, 2);
+ for (unsigned n = 0; n < 2; n++) {
+ const vec4_builder ubld = bld.exec_all().group(4, n);
+ ubld.MOV(writemask(offset(tmp, 8, n), WRITEMASK_X), brw_imm_ud(di.i1));
+ ubld.MOV(writemask(offset(tmp, 8, n), WRITEMASK_Y), brw_imm_ud(di.i2));
+ }
+
+ return swizzle(src_reg(retype(tmp, BRW_REGISTER_TYPE_DF)), BRW_SWIZZLE_XXXX);
+}
+
void
vec4_visitor::nir_emit_load_const(nir_load_const_instr *instr)
{
@@ -366,6 +413,7 @@ vec4_visitor::nir_emit_load_const(nir_load_const_instr *instr)
reg.type = BRW_REGISTER_TYPE_D;
}
+ const vec4_builder ibld = vec4_builder(this).at_end();
unsigned remaining = brw_writemask_for_size(instr->def.num_components);
/* @FIXME: consider emitting vector operations to save some MOVs in
@@ -389,7 +437,7 @@ vec4_visitor::nir_emit_load_const(nir_load_const_instr *instr)
reg.writemask = writemask;
if (instr->def.bit_size == 64) {
- emit(MOV(reg, setup_imm_df(instr->value.f64[i])));
+ emit(MOV(reg, setup_imm_df(ibld, instr->value.f64[i])));
} else {
emit(MOV(reg, brw_imm_d(instr->value.i32[i])));
}
@@ -1220,53 +1268,6 @@ vec4_visitor::emit_conversion_to_double(dst_reg dst, src_reg src,
inst->saturate = saturate;
}
-src_reg
-vec4_visitor::setup_imm_df(double v)
-{
- assert(devinfo->gen >= 7);
-
- if (devinfo->gen >= 8)
- return brw_imm_df(v);
-
- /* gen7.5 does not support DF immediates straighforward but the DIM
- * instruction allows to set the 64-bit immediate value.
- */
- if (devinfo->is_haswell) {
- dst_reg dst = retype(dst_reg(VGRF, alloc.allocate(2)), BRW_REGISTER_TYPE_DF);
- emit(DIM(dst, brw_imm_df(v)))->force_writemask_all = true;
- return swizzle(src_reg(retype(dst, BRW_REGISTER_TYPE_DF)), BRW_SWIZZLE_XXXX);
- }
-
- /* gen7 does not support DF immediates */
- union {
- double d;
- struct {
- uint32_t i1;
- uint32_t i2;
- };
- } di;
-
- di.d = v;
-
- /* Write the low 32-bit of the constant to the X:UD channel and the
- * high 32-bit to the Y:UD channel to build the constant in a VGRF.
- * We have to do this twice (offset 0 and offset 1), since a DF VGRF takes
- * two SIMD8 registers in SIMD4x2 execution. Finally, return a swizzle
- * XXXX so any access to the VGRF only reads the constant data in these
- * channels.
- */
- const dst_reg tmp =
- retype(dst_reg(VGRF, alloc.allocate(2)), BRW_REGISTER_TYPE_UD);
- for (int n = 0; n < 2; n++) {
- emit(MOV(writemask(offset(tmp, 8, n), WRITEMASK_X), brw_imm_ud(di.i1)))
- ->force_writemask_all = true;
- emit(MOV(writemask(offset(tmp, 8, n), WRITEMASK_Y), brw_imm_ud(di.i2)))
- ->force_writemask_all = true;
- }
-
- return swizzle(src_reg(retype(tmp, BRW_REGISTER_TYPE_DF)), BRW_SWIZZLE_XXXX);
-}
-
void
vec4_visitor::nir_emit_alu(nir_alu_instr *instr)
{