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Special handling of LEApcrel and tLEApcrel.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36504 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-04-27 08:14:15 +00:00
parent eec041a037
commit 768c9f725b
1 changed files with 11 additions and 0 deletions
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11
lib/Target/ARM/ARMConstantIslandPass.cpp
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@ -377,6 +377,10 @@ void ARMConstantIslands::InitialFunctionScan(MachineFunction &Fn,
// Constant pool entries can reach anything. // Constant pool entries can reach anything.
if (I->getOpcode() == ARM::CONSTPOOL_ENTRY) if (I->getOpcode() == ARM::CONSTPOOL_ENTRY)
continue; continue;
if (I->getOpcode() == ARM::tLEApcrel) {
Bits = 8; // Taking the address of a CP entry.
break;
}
assert(0 && "Unknown addressing mode for CP reference!"); assert(0 && "Unknown addressing mode for CP reference!");
case ARMII::AddrMode1: // AM1: 8 bits << 2 case ARMII::AddrMode1: // AM1: 8 bits << 2
Bits = 8; Bits = 8;
@ -869,6 +873,13 @@ bool ARMConstantIslands::HandleConstantPoolUser(MachineFunction &Fn,
MachineBasicBlock *NewMBB; MachineBasicBlock *NewMBB;
// Compute this only once, it's expensive // Compute this only once, it's expensive
unsigned UserOffset = GetOffsetOf(UserMI) + (isThumb ? 4 : 8); unsigned UserOffset = GetOffsetOf(UserMI) + (isThumb ? 4 : 8);
// Special cases: LEApcrel and tLEApcrel are two instructions MI's. The
// actual user is the second instruction.
if (UserMI->getOpcode() == ARM::LEApcrel)
UserOffset += 4;
else if (UserMI->getOpcode() == ARM::tLEApcrel)
UserOffset += 2;
// See if the current entry is within range, or there is a clone of it // See if the current entry is within range, or there is a clone of it
// in range. // in range.