parent
4d83728a57
commit
d556115e7e
|
@ -466,8 +466,8 @@ SimpleRegisterCoalescing::UpdateRegDefsUses(unsigned SrcReg, unsigned DstReg,
|
|||
O.setSubReg(0);
|
||||
} else {
|
||||
// Sub-register indexes goes from small to large. e.g.
|
||||
// RAX: 0 -> AL, 1 -> AH, 2 -> AX, 3 -> EAX
|
||||
// EAX: 0 -> AL, 1 -> AH, 2 -> AX
|
||||
// RAX: 1 -> AL, 2 -> AX, 3 -> EAX
|
||||
// EAX: 1 -> AL, 2 -> AX
|
||||
// So RAX's sub-register 2 is AX, RAX's sub-regsiter 3 is EAX, whose
|
||||
// sub-register 2 is also AX.
|
||||
if (SubIdx && OldSubIdx && SubIdx != OldSubIdx)
|
||||
|
|
Loading…
Reference in New Issue