Displaying 4 results from an estimated 4 matches for "hassmul_lohi".
2009 Dec 09
2
[LLVMdev] Unsigned int multiplication using UMUL_LOHI
...ply or divide can be lowered using two-result
operations.
// We just need the low half of the multiply; try both the signed
// and unsigned forms. If the target supports both SMUL_LOHI and
// UMUL_LOHI, form a preference by checking which forms of plain
// MULH it supports.
bool HasSMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::SMUL_LOHI, VT);
bool HasUMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::UMUL_LOHI, VT);
bool HasMULHS = TLI.isOperationLegalOrCustom(ISD::MULHS, VT);
bool HasMULHU = TLI.isOperationLegalOrCustom(ISD::MULHU, VT);
unsigned OpToUse = 0;
if (HasSMUL...
2009 May 21
0
[LLVMdev] [PATCH] Add new phase to legalization to handle vector operations
On Wed, May 20, 2009 at 4:55 PM, Dan Gohman <gohman at apple.com> wrote:
> Can you explain why you chose the approach of using a new pass?
> I pictured removing LegalizeDAG's type legalization code would
> mostly consist of finding all the places that use TLI.getTypeAction
> and just deleting code for handling its Expand and Promote. Are you
> anticipating something more
2009 May 20
2
[LLVMdev] [PATCH] Add new phase to legalization to handle vector operations
On May 20, 2009, at 1:34 PM, Eli Friedman wrote:
> On Wed, May 20, 2009 at 1:19 PM, Eli Friedman
> <eli.friedman at gmail.com> wrote:
>
>> Per subject, this patch adding an additional pass to handle vector
>>
>> operations; the idea is that this allows removing the code from
>>
>> LegalizeDAG that handles illegal types, which should be a significant
2009 May 21
2
[LLVMdev] [PATCH] Add new phase to legalization to handle vector operations
...Custom) {
- SDValue New = TLI.LowerOperation(Op, DAG);
- if (New.getNode()) {
- ExpandOp(New, Lo, Hi);
- break;
- }
- }
-
- bool HasMULHS = TLI.isOperationLegalOrCustom(ISD::MULHS, NVT);
- bool HasMULHU = TLI.isOperationLegalOrCustom(ISD::MULHU, NVT);
- bool HasSMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::SMUL_LOHI, NVT);
- bool HasUMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::UMUL_LOHI, NVT);
- if (HasMULHU || HasMULHS || HasUMUL_LOHI || HasSMUL_LOHI) {
- SDValue LL, LH, RL, RH;
- ExpandOp(Node->getOperand(0), LL, LH);
- ExpandOp(Node->...