================
@@ -7017,22 +7018,44 @@ static SDValue sinkProxyReg(SDValue R, SDValue Chain,
}
}
-static unsigned getF16SubOpc(Intrinsic::ID AddIntrinsicID) {
- switch (AddIntrinsicID) {
+static unsigned getFAddWithNegOpcode(EVT VT, Intrinsic::ID IID,
+ APFloat::roundingMode RoundingMode) {
+ const bool IsFTZ = nvvm::FAddShouldFTZ(IID);
+ switch (VT.getScalarType().getSimpleVT().SimpleTy) {
+ case MVT::f16:
+ if (nvvm::FAddShouldSaturate(IID))
+ return IsFTZ ? NVPTXISD::SUB_RN_FTZ_SAT : NVPTXISD::SUB_RN_SAT;
+ return IsFTZ ? NVPTXISD::SUB_RN_FTZ : NVPTXISD::SUB_RN;
+ case MVT::bf16:
+ return NVPTXISD::SUB_RN;
+ case MVT::f32:
+ if (!VT.isVector() || nvvm::FAddShouldSaturate(IID))
+ return 0;
+ switch (RoundingMode) {
+ case APFloat::rmNearestTiesToEven:
+ return IsFTZ ? NVPTXISD::SUB_RN_FTZ : NVPTXISD::SUB_RN;
+ case APFloat::rmTowardZero:
+ return IsFTZ ? NVPTXISD::SUB_RZ_FTZ : NVPTXISD::SUB_RZ;
+ case APFloat::rmTowardNegative:
+ return IsFTZ ? NVPTXISD::SUB_RM_FTZ : NVPTXISD::SUB_RM;
+ case APFloat::rmTowardPositive:
+ return IsFTZ ? NVPTXISD::SUB_RP_FTZ : NVPTXISD::SUB_RP;
----------------
durga4github wrote:
can a 2d array make it less verbose?
```
static const unsigned SubOpc[4][2] = {
{NVPTXISD::SUB_RN, NVPTXISD::SUB_RN_FTZ},
{NVPTXISD::SUB_RZ, NVPTXISD::SUB_RZ_FTZ},
{NVPTXISD::SUB_RM, NVPTXISD::SUB_RM_FTZ},
{NVPTXISD::SUB_RP, NVPTXISD::SUB_RP_FTZ},
};
```
https://github.com/llvm/llvm-project/pull/217336
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