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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-01-09 21:58:20 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-01-09 21:58:20 +0000 |
| commit | 42e9c963921776cb498c33b6c6c03f29971316f3 (patch) | |
| tree | 0e3b29c341c27f498cd008f35d90e8d27b099c4c /lib/CodeGen/RegAllocFast.cpp | |
| parent | 9dddf08eb8851e7c707df7f36b18e4e738e717cc (diff) | |
| download | llvm-42e9c963921776cb498c33b6c6c03f29971316f3.tar.gz llvm-42e9c963921776cb498c33b6c6c03f29971316f3.tar.bz2 llvm-42e9c963921776cb498c33b6c6c03f29971316f3.tar.xz | |
Remove MachineRegisterInfo::getLastVirtReg(), it was giving wrong results
when no virtual registers have been allocated.
It was only used to resize IndexedMaps, so provide an IndexedMap::resize()
method such that
Map.grow(MRI.getLastVirtReg());
can be replaced with the simpler
Map.resize(MRI.getNumVirtRegs());
This works correctly when no virtuals are allocated, and it bypasses the to/from
index conversions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123130 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/RegAllocFast.cpp')
| -rw-r--r-- | lib/CodeGen/RegAllocFast.cpp | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/lib/CodeGen/RegAllocFast.cpp b/lib/CodeGen/RegAllocFast.cpp index 109da42e9c..6666d9aaf4 100644 --- a/lib/CodeGen/RegAllocFast.cpp +++ b/lib/CodeGen/RegAllocFast.cpp @@ -1024,8 +1024,7 @@ bool RAFast::runOnMachineFunction(MachineFunction &Fn) { // initialize the virtual->physical register map to have a 'null' // mapping for all virtual registers - unsigned LastVirtReg = MRI->getLastVirtReg(); - StackSlotForVirtReg.grow(LastVirtReg); + StackSlotForVirtReg.resize(MRI->getNumVirtRegs()); // Loop over all of the basic blocks, eliminating virtual register references for (MachineFunction::iterator MBBi = Fn.begin(), MBBe = Fn.end(); |