Register DstReg,
Register Num,
Register Den,
- bool IsRem) const {
+ bool IsDiv) const {
const LLT S1 = LLT::scalar(1);
const LLT S32 = LLT::scalar(32);
auto Div = B.buildSelect(S32, Tmp1, Quotient_A_One, Quotient);
// Div = (Remainder_GE_Zero ? Div : Quotient_S_One)
- if (IsRem) {
+ if (IsDiv) {
+ B.buildSelect(DstReg, Remainder_GE_Zero, Div, Quotient_S_One);
+ } else {
Div = B.buildSelect(S32, Remainder_GE_Zero, Div, Quotient_S_One);
// Calculate Rem result:
// Rem = (Remainder_GE_Zero ? Rem : Remainder_A_Den)
B.buildSelect(DstReg, Remainder_GE_Zero, Rem, Remainder_A_Den);
- } else {
- B.buildSelect(DstReg, Remainder_GE_Zero, Div, Quotient_S_One);
}
}
bool AMDGPULegalizerInfo::legalizeUDIV_UREM32(MachineInstr &MI,
MachineRegisterInfo &MRI,
MachineIRBuilder &B) const {
- const bool IsRem = MI.getOpcode() == AMDGPU::G_UREM;
+ const bool IsDiv = MI.getOpcode() == AMDGPU::G_UDIV;
Register DstReg = MI.getOperand(0).getReg();
Register Num = MI.getOperand(1).getReg();
Register Den = MI.getOperand(2).getReg();
- legalizeUDIV_UREM32Impl(B, DstReg, Num, Den, IsRem);
+ legalizeUDIV_UREM32Impl(B, DstReg, Num, Den, IsDiv);
MI.eraseFromParent();
return true;
}
MachineIRBuilder &B) const {
const LLT S32 = LLT::scalar(32);
- const bool IsRem = MI.getOpcode() == AMDGPU::G_SREM;
+ const bool IsDiv = MI.getOpcode() == AMDGPU::G_SDIV;
Register DstReg = MI.getOperand(0).getReg();
Register LHS = MI.getOperand(1).getReg();
Register RHS = MI.getOperand(2).getReg();
RHS = B.buildXor(S32, RHS, RHSign).getReg(0);
Register UDivRem = MRI.createGenericVirtualRegister(S32);
- legalizeUDIV_UREM32Impl(B, UDivRem, LHS, RHS, IsRem);
+ legalizeUDIV_UREM32Impl(B, UDivRem, LHS, RHS, IsDiv);
- if (IsRem) {
- auto RSign = LHSign; // Remainder sign is the same as LHS
- UDivRem = B.buildXor(S32, UDivRem, RSign).getReg(0);
- B.buildSub(DstReg, UDivRem, RSign);
- } else {
+ if (IsDiv) {
auto DSign = B.buildXor(S32, LHSign, RHSign);
UDivRem = B.buildXor(S32, UDivRem, DSign).getReg(0);
B.buildSub(DstReg, UDivRem, DSign);
+ } else {
+ auto RSign = LHSign; // Remainder sign is the same as LHS
+ UDivRem = B.buildXor(S32, UDivRem, RSign).getReg(0);
+ B.buildSub(DstReg, UDivRem, RSign);
}
MI.eraseFromParent();