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nv50/ir/gk110: use shl/shr instead of lshf/rshf so that c[] is supported

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Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
This commit is contained in:
Ilia Mirkin 2014-03-14 08:16:00 -04:00
parent 34bf5e27c6
commit b56e50b8af
1 changed files with 6 additions and 17 deletions
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23
src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gk110.cpp
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@ -695,27 +695,16 @@ CodeEmitterGK110::emitINSBF(const Instruction *i)
void
CodeEmitterGK110::emitShift(const Instruction *i)
{
const bool sar = i->op == OP_SHR && isSignedType(i->sType);
if (sar) {
emitForm_21(i, 0x214, 0x014);
code[1] |= 1 << 19;
} else
if (i->op == OP_SHR) {
// this is actually RSHF
emitForm_21(i, 0x27c, 0x87c);
code[1] |= GK110_GPR_ZERO << 10;
emitForm_21(i, 0x214, 0xc14);
if (isSignedType(i->dType))
code[1] |= 1 << 19;
} else {
// this is actually LSHF
emitForm_21(i, 0x1fc, 0xb7c);
code[1] |= GK110_GPR_ZERO << 10;
emitForm_21(i, 0x224, 0xc24);
}
if (i->subOp == NV50_IR_SUBOP_SHIFT_WRAP) {
if (!sar)
code[1] |= 1 << 21;
// XXX: find wrap modifier for SHR S32
}
if (i->subOp == NV50_IR_SUBOP_SHIFT_WRAP)
code[1] |= 1 << 10;
}
void