diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/ARM/ARMBaseRegisterInfo.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/Target/ARM/ARMBaseRegisterInfo.cpp b/lib/Target/ARM/ARMBaseRegisterInfo.cpp index c5848d4df8..3cd28b486b 100644 --- a/lib/Target/ARM/ARMBaseRegisterInfo.cpp +++ b/lib/Target/ARM/ARMBaseRegisterInfo.cpp @@ -674,6 +674,15 @@ ARMBaseRegisterInfo::estimateRSStackSizeLimit(MachineFunction &MF) const { I != E; ++I) { for (unsigned i = 0, e = I->getNumOperands(); i != e; ++i) { if (!I->getOperand(i).isFI()) continue; + + // When using ADDri to get the address of a stack object, 255 is the + // largest offset guaranteed to fit in the immediate offset. + if (I->getOpcode() == ARM::ADDri) { + Limit = std::min(Limit, (1U << 8) - 1); + break; + } + + // Otherwise check the addressing mode. switch (I->getDesc().TSFlags & ARMII::AddrModeMask) { case ARMII::AddrMode3: case ARMII::AddrModeT2_i8: |