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Fix a bug where we were implicitly assuming that there would be at least

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one terminator instruction in each basic block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11714 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-02-22 19:08:15 +00:00
parent 7ca04097ad
commit 688c8252d2
1 changed files with 2 additions and 2 deletions
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4
lib/CodeGen/RegAllocLocal.cpp
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@ -160,7 +160,7 @@ namespace {
/// the virtual register slot specified by VirtReg. It then updates the RA /// the virtual register slot specified by VirtReg. It then updates the RA
/// data structures to indicate the fact that PhysReg is now available. /// data structures to indicate the fact that PhysReg is now available.
/// ///
void spillVirtReg(MachineBasicBlock &MBB, MachineInstr *MI, void spillVirtReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
unsigned VirtReg, unsigned PhysReg); unsigned VirtReg, unsigned PhysReg);
/// spillPhysReg - This method spills the specified physical register into /// spillPhysReg - This method spills the specified physical register into
@ -258,7 +258,7 @@ void RA::removePhysReg(unsigned PhysReg) {
/// virtual register slot specified by VirtReg. It then updates the RA data /// virtual register slot specified by VirtReg. It then updates the RA data
/// structures to indicate the fact that PhysReg is now available. /// structures to indicate the fact that PhysReg is now available.
/// ///
void RA::spillVirtReg(MachineBasicBlock &MBB, MachineInstr *I, void RA::spillVirtReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
unsigned VirtReg, unsigned PhysReg) { unsigned VirtReg, unsigned PhysReg) {
assert(VirtReg && "Spilling a physical register is illegal!" assert(VirtReg && "Spilling a physical register is illegal!"
" Must not have appropriate kill for the register or use exists beyond" " Must not have appropriate kill for the register or use exists beyond"