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gm107/ir: Add support for double immediates

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Add support for encoding double immediates (up to 20 bits of precision)
into the generated gm107 machine-code.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
This commit is contained in:
Hans de Goede
2015-11-05 14:32:35 +01:00
committed by Ilia Mirkin
parent 12c850d01c
commit b487b55f7d
1 changed files with 4 additions and 1 deletions
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src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gm107.cpp
+4 -1
View File
@@ -310,9 +310,12 @@ CodeEmitterGM107::emitIMMD(int pos, int len, const ValueRef &ref)
uint32_t val = imm->reg.data.u32;
if (len == 19) {
if (isFloatType(insn->sType)) {
if (insn->sType == TYPE_F32 || insn->sType == TYPE_F16) {
assert(!(val & 0x00000fff));
val >>= 12;
} else if (insn->sType == TYPE_F64) {
assert(!(imm->reg.data.u64 & 0x00000fffffffffffULL));
val = imm->reg.data.u64 >> 44;
}
assert(!(val & 0xfff00000) || (val & 0xfff00000) == 0xfff00000);
emitField( 56, 1, (val & 0x80000) >> 19);