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implement support for inserting a cond branch

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31096 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-10-21 05:36:13 +00:00
parent 34a84ac81c
commit 54108068b7
1 changed files with 8 additions and 4 deletions
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12
lib/Target/PowerPC/PPCInstrInfo.cpp
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@ -240,15 +240,19 @@ void PPCInstrInfo::InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
const std::vector<MachineOperand> &Cond) const {
// Shouldn't be a fall through.
assert(TBB && "InsertBranch must not be told to insert a fallthrough");
assert((Cond.size() == 2 || Cond.size() == 0) &&
"PPC branch conditions have two components!");
// Unconditional branch?
// One-way branch.
if (FBB == 0) {
BuildMI(&MBB, PPC::B, 1).addMBB(TBB);
if (Cond.empty()) // Unconditional branch
BuildMI(&MBB, PPC::B, 1).addMBB(TBB);
else // Conditional branch
BuildMI(&MBB, PPC::COND_BRANCH, 3)
.addReg(Cond[0].getReg()).addImm(Cond[1].getImm()).addMBB(TBB);
return;
}
assert(Cond.size() == 2 && "PPC branch conditions have two components!");
// Conditional branch
BuildMI(&MBB, PPC::COND_BRANCH, 3)
.addReg(Cond[0].getReg()).addImm(Cond[1].getImm()).addMBB(TBB);