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Invalidate liveness in ARMConstantIslandPass.

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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
This commit is contained in:
Jakob Stoklund Olesen 2012-03-29 23:14:26 +00:00
parent ccca22e9e2
commit 7a4c071cd9
1 changed files with 4 additions and 0 deletions
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4
lib/Target/ARM/ARMConstantIslandPass.cpp
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@ -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();