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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2009-09-21 07:19:08 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2009-09-21 07:19:08 +0000 |
| commit | a5ba07c3d14ffdf288af2513d4ab39464fb7e20d (patch) | |
| tree | c535e8db6a449f2a16f862b2182af96fe134135b /lib | |
| parent | 4fbd14e80e11ec3ec9f240919e4a4a0186620c0c (diff) | |
| download | llvm-a5ba07c3d14ffdf288af2513d4ab39464fb7e20d.tar.gz llvm-a5ba07c3d14ffdf288af2513d4ab39464fb7e20d.tar.bz2 llvm-a5ba07c3d14ffdf288af2513d4ab39464fb7e20d.tar.xz | |
Verify that phi instructions refer to MBBs in the CFG.
The machine code verifier no longer tolerates phi instructions with noop
operands. All MBBs on a phi instruction must be in the CFG.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82448 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/CodeGen/MachineVerifier.cpp | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/lib/CodeGen/MachineVerifier.cpp b/lib/CodeGen/MachineVerifier.cpp index f43a370345..b4d6588bf4 100644 --- a/lib/CodeGen/MachineVerifier.cpp +++ b/lib/CodeGen/MachineVerifier.cpp @@ -592,13 +592,14 @@ MachineVerifier::visitMachineOperand(const MachineOperand *MO, unsigned MONum) } break; } - // Can PHI instrs refer to MBBs not in the CFG? X86 and ARM do. - // case MachineOperand::MO_MachineBasicBlock: - // if (MI->getOpcode() == TargetInstrInfo::PHI) { - // if (!MO->getMBB()->isSuccessor(MI->getParent())) - // report("PHI operand is not in the CFG", MO, MONum); - // } - // break; + + case MachineOperand::MO_MachineBasicBlock: + if (MI->getOpcode() == TargetInstrInfo::PHI) { + if (!MO->getMBB()->isSuccessor(MI->getParent())) + report("PHI operand is not in the CFG", MO, MONum); + } + break; + default: break; } |