6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-14 11:32:34 +00:00
Code Issues Projects Releases Wiki Activity

Don't try to sink 3-address instruction if convertToThreeAddress created more than one instructions.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48336 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2008-03-13 07:56:58 +00:00
parent d99464d647
commit 0099ae2468
1 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
lib/CodeGen/TwoAddressInstructionPass.cpp
View File

@ -291,7 +291,12 @@ bool TwoAddressInstructionPass::runOnMachineFunction(MachineFunction &MF) {
if (MachineInstr *New=TII->convertToThreeAddress(mbbi, mi, *LV)) {
DOUT << "2addr: CONVERTING 2-ADDR: " << *mi;
DOUT << "2addr: TO 3-ADDR: " << *New;
bool Sunk = Sink3AddrInstruction(mbbi, New, regB, mi);
bool Sunk = false;
if (New->findRegisterUseOperand(regB, New, TRI))
// FIXME: Temporary workaround. If the new instruction doesn't
// uses regB, convertToThreeAddress must have created more
// then one instruction.
Sunk = Sink3AddrInstruction(mbbi, New, regB, mi);
mbbi->erase(mi); // Nuke the old inst.
if (!Sunk) mi = New;
++NumConvertedTo3Addr;