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-rw-r--r--lib/Target/ARM/ARMInstrInfo.td8
-rw-r--r--lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp2
2 files changed, 7 insertions, 3 deletions
diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td
index 5d646e7349..7e5d1363dc 100644
--- a/lib/Target/ARM/ARMInstrInfo.td
+++ b/lib/Target/ARM/ARMInstrInfo.td
@@ -3317,12 +3317,16 @@ def DSB : AInoP<(outs), (ins memb_opt:$opt), MiscFrm, NoItinerary,
def : InstAlias<"dsb", (DSB 0xf)>, Requires<[IsARM, HasDB]>;
// ISB has only full system option
-def ISB : AInoP<(outs), (ins), MiscFrm, NoItinerary, "isb", "", []>,
+def ISB : AInoP<(outs), (ins memb_opt:$opt), MiscFrm, NoItinerary,
+ "isb", "\t$opt", []>,
Requires<[IsARM, HasDB]> {
+ bits<4> opt;
let Inst{31-4} = 0xf57ff06;
- let Inst{3-0} = 0b1111;
+ let Inst{3-0} = opt;
}
+def : InstAlias<"isb", (ISB 0xf)>, Requires<[IsARM, HasDB]>;
+
let usesCustomInserter = 1 in {
let Uses = [CPSR] in {
def ATOMIC_LOAD_ADD_I8 : PseudoInst<
diff --git a/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp b/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp
index fe165b04b4..581d877a20 100644
--- a/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp
+++ b/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp
@@ -3380,7 +3380,7 @@ static bool DisassemblePreLoadFrm(MCInst &MI, unsigned Opcode, uint32_t insn,
static bool DisassembleMiscFrm(MCInst &MI, unsigned Opcode, uint32_t insn,
unsigned short NumOps, unsigned &NumOpsAdded, BO B) {
- if (Opcode == ARM::DMB || Opcode == ARM::DSB) {
+ if (Opcode == ARM::DMB || Opcode == ARM::DSB || Opcode == ARM::ISB) {
// Inst{3-0} encodes the memory barrier option for the variants.
unsigned opt = slice(insn, 3, 0);
switch (opt) {