Lines Matching full:branch

11 // (2) fuses compares and branches into COMPARE AND BRANCH instructions
38 STATISTIC(BranchOnCounts, "Number of branch-on-count instructions");
41 STATISTIC(FusedComparisons, "Number of fused compare-and-branch instructions");
181 // of -1 and if CCUsers is a single branch on nonzero, eliminate the addition
182 // and convert the branch to a BRCT(G) or BRCTH.  Return true on success.
203   MachineInstr *Branch = CCUsers[0];
204   if (Branch->getOpcode() != SystemZ::BRC ||
205       Branch->getOperand(0).getImm() != SystemZ::CCMASK_ICMP ||
206       Branch->getOperand(1).getImm() != SystemZ::CCMASK_CMP_NE)
211   // Compare and Branch.
213   MachineBasicBlock::iterator MBBI = Compare, MBBE = Branch;
218   // The transformation is OK.  Rebuild Branch as a BRCT(G) or BRCTH.
219   MachineOperand Target(Branch->getOperand(2));
220   while (Branch->getNumOperands())
221     Branch->removeOperand(0);
222   Branch->setDesc(TII->get(BRCT));
223   MachineInstrBuilder MIB(*Branch->getParent()->getParent(), Branch);
226   // branch displacement overflows.  BRCTH has a 32-bit displacement, so
236 // the load and convert the branch to a load-and-trap.  Return true on success.
247   MachineInstr *Branch = CCUsers[0];
248   if (Branch->getOpcode() != SystemZ::CondTrap ||
249       Branch->getOperand(0).getImm() != SystemZ::CCMASK_ICMP ||
250       Branch->getOperand(1).getImm() != SystemZ::CCMASK_CMP_EQ)
255   // Compare and Branch.
257   MachineBasicBlock::iterator MBBI = Compare, MBBE = Branch;
262   // The transformation is OK.  Rebuild Branch as a load-and-trap.
263   while (Branch->getNumOperands())
264     Branch->removeOperand(0);
265   Branch->setDesc(TII->get(LATOpcode));
266   MachineInstrBuilder(*Branch->getParent()->getParent(), Branch)
518       // Try to remove both MI and Compare by converting a branch to BRCT(G).
576 // Try to fuse comparison instruction Compare into a later branch.
580   // See whether we have a single branch with which to fuse.
583   MachineInstr *Branch = CCUsers[0];
585   switch (Branch->getOpcode()) {
608   // Make sure that the operands are available at the branch.
615   MachineBasicBlock::iterator MBBI = Compare, MBBE = Branch;
621   // Read the branch mask, target (if applicable), regmask (if applicable).
636   Branch->removeOperand(CCUse);
639     Branch->removeOperand(3);
640   // Remove target (branch or sibcall).
643     Branch->removeOperand(2);
644   Branch->removeOperand(1);
645   Branch->removeOperand(0);
647   // Rebuild Branch as a fused compare and branch.
653   Branch->setDesc(TII->get(FusedOpcode));
654   MachineInstrBuilder MIB(*Branch->getParent()->getParent(), Branch);
661     // to a non-fused branch because of a long displacement.  Conditional