diff options
| -rw-r--r-- | lib/Target/ARM/Thumb2SizeReduction.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/Target/ARM/Thumb2SizeReduction.cpp b/lib/Target/ARM/Thumb2SizeReduction.cpp index 65846b2422..cb44f8e71c 100644 --- a/lib/Target/ARM/Thumb2SizeReduction.cpp +++ b/lib/Target/ARM/Thumb2SizeReduction.cpp @@ -491,11 +491,14 @@ Thumb2SizeReduce::ReduceSpecial(MachineBasicBlock &MBB, MachineInstr *MI, // Try to reduce to tADDrSPi. unsigned Imm = MI->getOperand(2).getImm(); // The immediate must be in range, the destination register must be a low - // reg, and the condition flags must not be being set. + // reg, the predicate must be "always" and the condition flags must not + // be being set. if (Imm & 3 || Imm > 1024) return false; if (!isARMLowRegister(MI->getOperand(0).getReg())) return false; + if (MI->getOperand(3).getImm() != ARMCC::AL) + return false; const MCInstrDesc &MCID = MI->getDesc(); if (MCID.hasOptionalDef() && MI->getOperand(MCID.getNumOperands()-1).getReg() == ARM::CPSR) |