diff options
| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-03-16 22:56:11 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-03-16 22:56:11 +0000 |
| commit | 2926733240d0766fbd45df6eb609ad2328f0307d (patch) | |
| tree | b9589fb2bf0928207e36690778c6f7ba44ff85d7 /lib/CodeGen/RegAllocBasic.cpp | |
| parent | c46570dc05851395829bef904bb6ddb1260400d1 (diff) | |
| download | llvm-2926733240d0766fbd45df6eb609ad2328f0307d.tar.gz llvm-2926733240d0766fbd45df6eb609ad2328f0307d.tar.bz2 llvm-2926733240d0766fbd45df6eb609ad2328f0307d.tar.xz | |
Tag cached interference with a user-provided tag instead of the virtual register number.
The live range of a virtual register may change which invalidates the cached
interference information.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127772 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/RegAllocBasic.cpp')
| -rw-r--r-- | lib/CodeGen/RegAllocBasic.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/CodeGen/RegAllocBasic.cpp b/lib/CodeGen/RegAllocBasic.cpp index d51be52027..ce92f3da43 100644 --- a/lib/CodeGen/RegAllocBasic.cpp +++ b/lib/CodeGen/RegAllocBasic.cpp @@ -296,6 +296,9 @@ void RegAllocBase::allocatePhysRegs() { continue; } + // Invalidate all interference queries, live ranges could have changed. + ++UserTag; + // selectOrSplit requests the allocator to return an available physical // register if possible and populate a list of new live intervals that // result from splitting. |