Be stricter in enforcing IT instruction predicate values, so that we don't end up trying to print out an illegal predicate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138443 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/Disassembler/ARMDisassembler.cpp b/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
index c4b2f61..346bd2b 100644
--- a/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
+++ b/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
@@ -228,6 +228,8 @@
uint64_t Address, const void *Decoder);
static DecodeStatus DecodeThumbBLTargetOperand(llvm::MCInst &Inst, unsigned Val,
uint64_t Address, const void *Decoder);
+static DecodeStatus DecodeITCond(llvm::MCInst &Inst, unsigned Val,
+ uint64_t Address, const void *Decoder);
#include "ARMGenDisassemblerTables.inc"
#include "ARMGenInstrInfo.inc"
@@ -3289,3 +3291,15 @@
return S;
}
+static DecodeStatus DecodeITCond(llvm::MCInst &Inst, unsigned Cond,
+ uint64_t Address, const void *Decoder) {
+ DecodeStatus S = Success;
+ if (Cond == 0xF) {
+ Cond = 0xE;
+ CHECK(S, Unpredictable);
+ }
+
+ Inst.addOperand(MCOperand::CreateImm(Cond));
+ return S;
+}
+