diff options
Diffstat (limited to 'lib/Target/PowerPC/PPCCTRLoops.cpp')
| -rw-r--r-- | lib/Target/PowerPC/PPCCTRLoops.cpp | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/lib/Target/PowerPC/PPCCTRLoops.cpp b/lib/Target/PowerPC/PPCCTRLoops.cpp index b98cc489f6..51658011a9 100644 --- a/lib/Target/PowerPC/PPCCTRLoops.cpp +++ b/lib/Target/PowerPC/PPCCTRLoops.cpp @@ -380,13 +380,13 @@ CountValue *PPCCTRLoops::getTripCount(MachineLoop *L, assert(InitialValue->isReg() && "Expecting register for init value"); unsigned InitialValueReg = InitialValue->getReg(); - const MachineInstr *DefInstr = MRI->getVRegDef(InitialValueReg); + MachineInstr *DefInstr = MRI->getVRegDef(InitialValueReg); // Here we need to look for an immediate load (an li or lis/ori pair). if (DefInstr && (DefInstr->getOpcode() == PPC::ORI8 || DefInstr->getOpcode() == PPC::ORI)) { int64_t start = (short) DefInstr->getOperand(2).getImm(); - const MachineInstr *DefInstr2 = + MachineInstr *DefInstr2 = MRI->getVRegDef(DefInstr->getOperand(0).getReg()); if (DefInstr2 && (DefInstr2->getOpcode() == PPC::LIS8 || DefInstr2->getOpcode() == PPC::LIS)) { @@ -399,6 +399,10 @@ CountValue *PPCCTRLoops::getTripCount(MachineLoop *L, if ((count % iv_value) != 0) { return 0; } + + OldInsts.push_back(DefInstr); + OldInsts.push_back(DefInstr2); + return new CountValue(count/iv_value); } } else if (DefInstr && (DefInstr->getOpcode() == PPC::LI8 || @@ -409,6 +413,9 @@ CountValue *PPCCTRLoops::getTripCount(MachineLoop *L, if ((count % iv_value) != 0) { return 0; } + + OldInsts.push_back(DefInstr); + return new CountValue(count/iv_value); } else if (iv_value == 1 || iv_value == -1) { // We can't determine a constant starting value. |