def so_imm_neg_asmoperand : AsmOperandClass { let Name = "ARMSOImmNeg"; }
def so_imm_neg : Operand<i32>, PatLeaf<(imm), [{
- return ARM_AM::getSOImmVal(-(uint32_t)N->getZExtValue()) != -1;
+ int64_t Value = -(int)N->getZExtValue();
+ return Value && ARM_AM::getSOImmVal(Value) != -1;
}], so_imm_neg_XFORM> {
let ParserMatchClass = so_imm_neg_asmoperand;
}
// t2_so_imm_neg - Match an immediate that is a negation of a t2_so_imm.
def t2_so_imm_neg_asmoperand : AsmOperandClass { let Name = "T2SOImmNeg"; }
def t2_so_imm_neg : Operand<i32>, PatLeaf<(imm), [{
- return ARM_AM::getT2SOImmVal(-((uint32_t)N->getZExtValue())) != -1;
+ int64_t Value = -(int)N->getZExtValue();
+ return Value && ARM_AM::getT2SOImmVal(Value) != -1;
}], t2_so_imm_neg_XFORM> {
let ParserMatchClass = t2_so_imm_neg_asmoperand;
}
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
if (!CE) return false;
int64_t Value = CE->getValue();
- return ARM_AM::getSOImmVal(-Value) != -1;
+ // Negation must be representable as an so_imm and be non-zero.
+ return Value && ARM_AM::getSOImmVal(-Value) != -1;
}
bool isT2SOImm() const {
if (!isImm()) return false;
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
if (!CE) return false;
int64_t Value = CE->getValue();
- return ARM_AM::getT2SOImmVal(-Value) != -1;
+ // Negation must be representable as a t2_so_imm and be non-zero.
+ return Value && ARM_AM::getT2SOImmVal(-Value) != -1;
}
bool isSetEndImm() const {
if (!isImm()) return false;
cmp r7, r8, ror r2
cmp r1, r6, rrx
cmp r0, #-2
+ cmp lr, #0
@ CHECK: cmp r1, #15 @ encoding: [0x0f,0x00,0x51,0xe3]
@ CHECK: cmp r1, r6 @ encoding: [0x06,0x00,0x51,0xe1]
@ CHECK: cmp r7, r8, ror r2 @ encoding: [0x78,0x02,0x57,0xe1]
@ CHECK: cmp r1, r6, rrx @ encoding: [0x66,0x00,0x51,0xe1]
@ CHECK: cmn r0, #2 @ encoding: [0x02,0x00,0x70,0xe3]
+@ CHECK: cmp lr, #0 @ encoding: [0x00,0x00,0x5e,0xe3]
@------------------------------------------------------------------------------