diff options
Diffstat (limited to 'lib/Target/ARM/ARMLoadStoreOptimizer.cpp')
| -rw-r--r-- | lib/Target/ARM/ARMLoadStoreOptimizer.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Target/ARM/ARMLoadStoreOptimizer.cpp b/lib/Target/ARM/ARMLoadStoreOptimizer.cpp index 0dab835f7c..838f20f4b7 100644 --- a/lib/Target/ARM/ARMLoadStoreOptimizer.cpp +++ b/lib/Target/ARM/ARMLoadStoreOptimizer.cpp @@ -308,6 +308,10 @@ ARMLoadStoreOpt::MergeOps(MachineBasicBlock &MBB, // VLDM/VSTM do not support DB mode without also updating the base reg. Mode = ARM_AM::db; else if (Offset != 0) { + // Check if this is a supported opcode before we insert instructions to + // calculate a new base register. + if (!getLoadStoreMultipleOpcode(Opcode, Mode)) return false; + // If starting offset isn't zero, insert a MI to materialize a new base. // But only do so if it is cost effective, i.e. merging more than two // loads / stores. |