+bool Constant::isOneValue() const {
+ // Check for 1 integers
+ if (const ConstantInt *CI = dyn_cast<ConstantInt>(this))
+ return CI->isOne();
+
+ // Check for FP which are bitcasted from 1 integers
+ if (const ConstantFP *CFP = dyn_cast<ConstantFP>(this))
+ return CFP->getValueAPF().bitcastToAPInt() == 1;
+
+ // Check for constant vectors which are splats of 1 values.
+ if (const ConstantVector *CV = dyn_cast<ConstantVector>(this))
+ if (Constant *Splat = CV->getSplatValue())
+ return Splat->isOneValue();
+
+ // Check for constant vectors which are splats of 1 values.
+ if (const ConstantDataVector *CV = dyn_cast<ConstantDataVector>(this))
+ if (Constant *Splat = CV->getSplatValue())
+ return Splat->isOneValue();
+
+ return false;
+}
+
+bool Constant::isMinSignedValue() const {
+ // Check for INT_MIN integers
+ if (const ConstantInt *CI = dyn_cast<ConstantInt>(this))
+ return CI->isMinValue(/*isSigned=*/true);
+
+ // Check for FP which are bitcasted from INT_MIN integers
+ if (const ConstantFP *CFP = dyn_cast<ConstantFP>(this))
+ return CFP->getValueAPF().bitcastToAPInt().isMinSignedValue();
+
+ // Check for constant vectors which are splats of INT_MIN values.
+ if (const ConstantVector *CV = dyn_cast<ConstantVector>(this))
+ if (Constant *Splat = CV->getSplatValue())
+ return Splat->isMinSignedValue();
+
+ // Check for constant vectors which are splats of INT_MIN values.
+ if (const ConstantDataVector *CV = dyn_cast<ConstantDataVector>(this))
+ if (Constant *Splat = CV->getSplatValue())
+ return Splat->isMinSignedValue();
+
+ return false;
+}
+
+bool Constant::isNotMinSignedValue() const {
+ // Check for INT_MIN integers
+ if (const ConstantInt *CI = dyn_cast<ConstantInt>(this))
+ return !CI->isMinValue(/*isSigned=*/true);
+
+ // Check for FP which are bitcasted from INT_MIN integers
+ if (const ConstantFP *CFP = dyn_cast<ConstantFP>(this))
+ return !CFP->getValueAPF().bitcastToAPInt().isMinSignedValue();
+
+ // Check for constant vectors which are splats of INT_MIN values.
+ if (const ConstantVector *CV = dyn_cast<ConstantVector>(this))
+ if (Constant *Splat = CV->getSplatValue())
+ return Splat->isNotMinSignedValue();
+
+ // Check for constant vectors which are splats of INT_MIN values.
+ if (const ConstantDataVector *CV = dyn_cast<ConstantDataVector>(this))
+ if (Constant *Splat = CV->getSplatValue())
+ return Splat->isNotMinSignedValue();
+
+ // It *may* contain INT_MIN, we can't tell.
+ return false;
+}
+