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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-03-27 17:33:52 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-03-27 17:33:52 +0000 |
| commit | 4acbcb3171415269e9850e13b6dda04854f16393 (patch) | |
| tree | d70b1369d7941685e9d124f02dfecc887a9ee5f4 /llvm/lib | |
| parent | 6c08534affd4ca7490422090d19656a960304fee (diff) | |
| download | bcm5719-llvm-4acbcb3171415269e9850e13b6dda04854f16393.tar.gz bcm5719-llvm-4acbcb3171415269e9850e13b6dda04854f16393.zip | |
ARMLoadStoreOptimizer invalidates register liveness.
This pass tries to update kill flags, but there are still many bugs.
Passes after the load/store optimizer don't need accurate liveness, so
don't even try.
<rdar://problem/11101911>
llvm-svn: 153519
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp b/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp index 51dfa65da62..5b729a642b7 100644 --- a/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp +++ b/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp @@ -1411,6 +1411,10 @@ bool ARMLoadStoreOpt::runOnMachineFunction(MachineFunction &Fn) { } delete RS; + + // Kill flags aren't updated accurately by this pass. + Fn.getRegInfo().invalidateLiveness(); + return Modified; } |
