diff options
| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-10-15 21:33:06 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-10-15 21:33:06 +0000 |
| commit | e4f273908bd37df5f0f6b2c575dcb2af99f6b85b (patch) | |
| tree | 51c66c47a113c60fd810f97f4ee9df34118c49b7 /lib/CodeGen/MachineCopyPropagation.cpp | |
| parent | 64ba6352097d38db5a57f4bf62dcdf14b0e6e147 (diff) | |
Freeze the reserved registers as soon as isel is complete.
Also provide an MRI::getReservedRegs() function to access the frozen
register set, and isReserved() and isAllocatable() methods to test
individual registers.
The various implementations of TRI::getReservedRegs() are quite
complicated, and many passes need to look at the reserved register set.
This patch makes it possible for these passes to use the cached copy in
MRI, avoiding a lot of malloc traffic and repeated calculations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165982 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/MachineCopyPropagation.cpp')
0 files changed, 0 insertions, 0 deletions