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-rw-r--r--lib/Target/XCore/XCoreInstrInfo.cpp13
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/Target/XCore/XCoreInstrInfo.cpp b/lib/Target/XCore/XCoreInstrInfo.cpp
index 5a548449d841d..722e7470f066d 100644
--- a/lib/Target/XCore/XCoreInstrInfo.cpp
+++ b/lib/Target/XCore/XCoreInstrInfo.cpp
@@ -145,6 +145,11 @@ static inline bool IsCondBranch(unsigned BrOpc) {
return IsBRF(BrOpc) || IsBRT(BrOpc);
}
+static inline bool IsBR_JT(unsigned BrOpc) {
+ return BrOpc == XCore::BR_JT
+ || BrOpc == XCore::BR_JT32;
+}
+
/// GetCondFromBranchOpc - Return the XCore CC that matches
/// the correspondent Branch instruction opcode.
static XCore::CondCode GetCondFromBranchOpc(unsigned BrOpc)
@@ -271,6 +276,14 @@ XCoreInstrInfo::AnalyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB,
return false;
}
+ // Likewise if it ends with a branch table followed by an unconditional branch.
+ if (IsBR_JT(SecondLastInst->getOpcode()) && IsBRU(LastInst->getOpcode())) {
+ I = LastInst;
+ if (AllowModify)
+ I->eraseFromParent();
+ return true;
+ }
+
// Otherwise, can't handle this.
return true;
}