diff options
| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-07-29 23:02:48 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-07-29 23:02:48 +0000 |
| commit | 9dd184151bcd629b7079a4f9858e0e7d05f44270 (patch) | |
| tree | addb0e9aee323a529d7fc4d43237ea56499d6ba2 /llvm/lib/CodeGen/MachineVerifier.cpp | |
| parent | e08f5b5b373129990d649dff1f3b636bcc177651 (diff) | |
| download | bcm5719-llvm-9dd184151bcd629b7079a4f9858e0e7d05f44270.tar.gz bcm5719-llvm-9dd184151bcd629b7079a4f9858e0e7d05f44270.zip | |
Check for multiple defs in the machine code verifier.
llvm-svn: 136535
Diffstat (limited to 'llvm/lib/CodeGen/MachineVerifier.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/MachineVerifier.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/MachineVerifier.cpp b/llvm/lib/CodeGen/MachineVerifier.cpp index 7a55852a131..8541d18ef3e 100644 --- a/llvm/lib/CodeGen/MachineVerifier.cpp +++ b/llvm/lib/CodeGen/MachineVerifier.cpp @@ -686,6 +686,11 @@ MachineVerifier::visitMachineOperand(const MachineOperand *MO, unsigned MONum) { else addRegWithSubRegs(regsDefined, Reg); + // Verify SSA form. + if (MRI->isSSA() && TargetRegisterInfo::isVirtualRegister(Reg) && + llvm::next(MRI->def_begin(Reg)) != MRI->def_end()) + report("Multiple virtual register defs in SSA form", MO, MONum); + // Check LiveInts for a live range, but only for virtual registers. if (LiveInts && TargetRegisterInfo::isVirtualRegister(Reg) && !LiveInts->isNotInMIMap(MI)) { |
