bitfield now gives this code:
_plus:
lwz r2, 0(r3)
rlwimi r2, r2, 0, 1, 31
xoris r2, r2, 32768
stw r2, 0(r3)
blr
instead of this:
_plus:
lwz r2, 0(r3)
srwi r4, r2, 31
slwi r4, r4, 31
addis r4, r4, -32768
rlwimi r2, r4, 0, 0, 0
stw r2, 0(r3)
blr
this can obviously still be improved.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28275
91177308-0d34-0410-b5e6-
96231b3b80d8
if (!I || !I->hasOneUse()) return false;
switch (I->getOpcode()) {
+ case Instruction::Add:
+ case Instruction::Sub:
+ case Instruction::Mul:
case Instruction::And:
case Instruction::Or:
case Instruction::Xor:
Instruction *I = cast<Instruction>(V);
Instruction *Res;
switch (I->getOpcode()) {
+ case Instruction::Add:
+ case Instruction::Sub:
+ case Instruction::Mul:
case Instruction::And:
case Instruction::Or:
case Instruction::Xor: {