diff options
Diffstat (limited to 'llvm/lib/Target/RISCV/RISCVInsertVSETVLI.cpp')
| -rw-r--r-- | llvm/lib/Target/RISCV/RISCVInsertVSETVLI.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/Target/RISCV/RISCVInsertVSETVLI.cpp b/llvm/lib/Target/RISCV/RISCVInsertVSETVLI.cpp index 3400b24..e591aa9 100644 --- a/llvm/lib/Target/RISCV/RISCVInsertVSETVLI.cpp +++ b/llvm/lib/Target/RISCV/RISCVInsertVSETVLI.cpp @@ -1381,6 +1381,11 @@ void RISCVInsertVSETVLI::doPRE(MachineBasicBlock &MBB) { if (!UnavailablePred || !AvailableInfo.isValid()) return; + // If we don't know the exact VTYPE, we can't copy the vsetvli to the exit of + // the unavailable pred. + if (AvailableInfo.hasSEWLMULRatioOnly()) + return; + // Critical edge - TODO: consider splitting? if (UnavailablePred->succ_size() != 1) return; |