Displaying 5 results from an estimated 5 matches for "opinvalidop".
2014 Aug 07
3
[LLVMdev] Proposal: Add a target lowering hook to state that target supports floating point exception behavior.
...FP = dyn_cast<ConstantFPSDNode>(N1.getNode());
ConstantFPSDNode *N2CFP = dyn_cast<ConstantFPSDNode>(N2.getNode());
if (N1CFP) {
@@ -3415,28 +3416,32 @@
switch (Opcode) {
case ISD::FADD:
s = V1.add(V2, APFloat::rmNearestTiesToEven);
- if (s != APFloat::opInvalidOp)
+ if (!HasFPExceptions || s != APFloat::opInvalidOp)
return getConstantFP(V1, VT);
break;
case ISD::FSUB:
s = V1.subtract(V2, APFloat::rmNearestTiesToEven);
- if (s!=APFloat::opInvalidOp)
+ if (!HasFPExceptions || s!=APFloat::opInvalidOp)...
2014 Aug 08
3
[LLVMdev] Proposal: Add a target lowering hook to state that target supports floating point exception behavior.
...gt; ConstantFPSDNode *N2CFP = dyn_cast<ConstantFPSDNode>(N2.getNode());
>> if (N1CFP) {
>> @@ -3415,28 +3416,32 @@
>> switch (Opcode) {
>> case ISD::FADD:
>> s = V1.add(V2, APFloat::rmNearestTiesToEven);
>> - if (s != APFloat::opInvalidOp)
>> + if (!HasFPExceptions || s != APFloat::opInvalidOp)
>> return getConstantFP(V1, VT);
>> break;
>> case ISD::FSUB:
>> s = V1.subtract(V2, APFloat::rmNearestTiesToEven);
>> - if (s!=APFloat::opInvalidOp)
>> +...
2014 Sep 19
2
[LLVMdev] More careful treatment of floating point exceptions
Hi Sanjay,
Thanks, I saw this flag and it's definitely should be considered, but
it appeared to me to be static characteristic of target platform. I'm
not sure how appropriate it would be to change its value from a front-end.
It says "Has", while optional flag would rather say "Uses" meaning that
implementation cares about floating point exceptions.
Regards,
Sergey
2014 Sep 25
2
[LLVMdev] More careful treatment of floating point exceptions
...stantFPSDNode>(N2.getNode());
if (N1CFP) {
@@ -3416,30 +3415,32 @@ SDValue SelectionDAG::getNode(unsigned Opcode, SDLoc DL, EVT VT, SDValue N1,
switch (Opcode) {
case ISD::FADD:
s = V1.add(V2, APFloat::rmNearestTiesToEven);
- if (!HasFPExceptions || s != APFloat::opInvalidOp)
+ if (isSafeToOptimizeFPOp(s, APFloat::opInvalidOp))
return getConstantFP(V1, VT);
break;
case ISD::FSUB:
s = V1.subtract(V2, APFloat::rmNearestTiesToEven);
- if (!HasFPExceptions || s!=APFloat::opInvalidOp)
+ if (isSafeToOptimizeFPOp(s, APF...
2007 Aug 18
1
[LLVMdev] Soft floating point support
This patch supplies software IEEE floating point support.
The comment from the patch reproduced below says all there is
to say.
This patch contains the prior "cleanup" patch; please don't apply
that one.
Please let me know of any bugs. It is tested reasonably well,
but until I put together random tests it's hard to have 100%
confidence.
Neil.
/* A self-contained host- and