ARM Asm parser range checking for [0,31] immediates.
llvm-svn: 135719
diff --git a/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index 5fc7849..827ad0f 100644
--- a/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -418,6 +418,14 @@
int64_t Value = CE->getValue();
return Value >= 0 && Value < 16;
}
+ bool isImm0_31() const {
+ if (Kind != Immediate)
+ return false;
+ const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
+ if (!CE) return false;
+ int64_t Value = CE->getValue();
+ return Value >= 0 && Value < 32;
+ }
bool isImm0_65535() const {
if (Kind != Immediate)
return false;
@@ -672,6 +680,11 @@
addExpr(Inst, getImm());
}
+ void addImm0_31Operands(MCInst &Inst, unsigned N) const {
+ assert(N == 1 && "Invalid number of operands!");
+ addExpr(Inst, getImm());
+ }
+
void addImm0_65535Operands(MCInst &Inst, unsigned N) const {
assert(N == 1 && "Invalid number of operands!");
addExpr(Inst, getImm());