maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Fix bugs handling ESP in alloca references 

llvm-svn: 7591
This commit is contained in:
Chris Lattner 2003-08-05 04:13:58 +00:00
parent 9c9b4c54fa
commit 92a199dca7
1 changed files with 6 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
llvm/lib/CodeGen/RegAllocLocal.cpp
View File

@ -232,7 +232,8 @@ void RA::removePhysReg(unsigned PhysReg) {
///
void RA::spillVirtReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator &I,
unsigned VirtReg, unsigned PhysReg) {
assert((VirtReg || DisableKill) && "Spilling a physical register is illegal!"
if (!VirtReg && DisableKill) return;
assert(VirtReg && "Spilling a physical register is illegal!"
" Must not have appropriate kill for the register or use exists beyond"
" the intended one.");
DEBUG(std::cerr << " Spilling register " << RegInfo->getName(PhysReg);
@ -606,8 +607,10 @@ void RA::AllocateBasicBlock(MachineBasicBlock &MBB) {
// Spill all physical registers holding virtual registers now.
while (!PhysRegsUsed.empty())
spillVirtReg(MBB, I, PhysRegsUsed.begin()->second,
PhysRegsUsed.begin()->first);
if (unsigned VirtReg = PhysRegsUsed.begin()->second)
spillVirtReg(MBB, I, VirtReg, PhysRegsUsed.begin()->first);
else
removePhysReg(PhysRegsUsed.begin()->first);
for (std::map<unsigned, unsigned>::iterator I = Virt2PhysRegMap.begin(),
E = Virt2PhysRegMap.end(); I != E; ++I)