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author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-03-29 23:14:26 +0000 |
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committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-03-29 23:14:26 +0000 |
commit | 7a4c071cd9f67599eba21e902079d0e85f2abf97 (patch) | |
tree | 16737d8614aee4f7c5ae3e9538f7d1fd50474d1c /lib/Target/ARM/ARMConstantIslandPass.cpp | |
parent | ccca22e9e2e03bdd782b1d4bf880ebf79e7b7e77 (diff) | |
download | llvm-7a4c071cd9f67599eba21e902079d0e85f2abf97.tar.gz llvm-7a4c071cd9f67599eba21e902079d0e85f2abf97.tar.bz2 llvm-7a4c071cd9f67599eba21e902079d0e85f2abf97.tar.xz |
Invalidate liveness in ARMConstantIslandPass.
This pass splits basic blocks to insert constant islands, and it
doesn't recompute the live-in lists. No later passes depend on accurate
liveness information.
This fixes PR12410 where the machine code verifier was complaining.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153700 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/ARMConstantIslandPass.cpp')
-rw-r--r-- | lib/Target/ARM/ARMConstantIslandPass.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Target/ARM/ARMConstantIslandPass.cpp b/lib/Target/ARM/ARMConstantIslandPass.cpp index b7b391d309..3123b6a905 100644 --- a/lib/Target/ARM/ARMConstantIslandPass.cpp +++ b/lib/Target/ARM/ARMConstantIslandPass.cpp @@ -21,6 +21,7 @@ #include "llvm/CodeGen/MachineConstantPool.h" #include "llvm/CodeGen/MachineFunctionPass.h" #include "llvm/CodeGen/MachineJumpTableInfo.h" +#include "llvm/CodeGen/MachineRegisterInfo.h" #include "llvm/Target/TargetData.h" #include "llvm/Target/TargetMachine.h" #include "llvm/Support/Debug.h" @@ -392,6 +393,9 @@ bool ARMConstantIslands::runOnMachineFunction(MachineFunction &mf) { HasFarJump = false; + // This pass invalidates liveness information when it splits basic blocks. + MF->getRegInfo().invalidateLiveness(); + // Renumber all of the machine basic blocks in the function, guaranteeing that // the numbers agree with the position of the block in the function. MF->RenumberBlocks(); |