git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194684
91177308-0d34-0410-b5e6-
96231b3b80d8
// Legalize VOP2
if (isVOP2(MI->getOpcode()) && Src1Idx != -1) {
MachineOperand &Src1 = MI->getOperand(Src1Idx);
// Legalize VOP2
if (isVOP2(MI->getOpcode()) && Src1Idx != -1) {
MachineOperand &Src1 = MI->getOperand(Src1Idx);
- // Legalize VOP2 instructions where src1 is not a VGPR.
+
+ // Legalize VOP2 instructions where src1 is not a VGPR. An SGPR input must
+ // be the first operand, and there can only be one.
if (Src1.isImm() || Src1.isFPImm() ||
(Src1.isReg() && RI.isSGPRClass(MRI.getRegClass(Src1.getReg())))) {
if (MI->isCommutable()) {
if (Src1.isImm() || Src1.isFPImm() ||
(Src1.isReg() && RI.isSGPRClass(MRI.getRegClass(Src1.getReg())))) {
if (MI->isCommutable()) {