case 'J': // integer zero
case 'K': // unsigned 16 bit immediate
case 'L': // signed 32 bit immediate where lower 16 bits are 0
+ case 'N': // immediate in the range of -65535 to -1 (inclusive)
if (isa<ConstantInt>(CallOperandVal))
weight = CW_Constant;
break;
}
}
return;
+ case 'N': // immediate in the range of -65535 to -1 (inclusive)
+ if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op)) {
+ EVT Type = Op.getValueType();
+ int64_t Val = C->getSExtValue();
+ if ((Val >= -65535) && (Val <= -1)) {
+ Result = DAG.getTargetConstant(Val, Type);
+ break;
+ }
+ }
+ return;
}
if (Result.getNode()) {
--- /dev/null
+
+;This is a negative test. The constant value given for the constraint (N).
+;immediate in the range of -65535 to -1 (inclusive).
+;Our example uses the positive value 3.
+;
+; RUN: not llc -march=mipsel < %s 2> %t
+; RUN: FileCheck --check-prefix=CHECK-ERRORS < %t %s
+
+define i32 @main() nounwind {
+entry:
+
+;CHECK-ERRORS: error: invalid operand for inline asm constraint 'N'
+
+ tail call i32 asm sideeffect "addi $0,$1,$2", "=r,r,N"(i32 7, i32 3) nounwind
+ ret i32 0
+}
+
; CHECK: #NO_APP
tail call i32 asm sideeffect "add $0,$1,$3\0A\09", "=r,r,L,r"(i32 7, i32 1048576, i32 0) nounwind
+; Now N with -3
+; CHECK: #APP
+; CHECK: addi ${{[0-9]+}},${{[0-9]+}},-3
+; CHECK: #NO_APP
+ tail call i32 asm sideeffect "addi $0,$1,$2", "=r,r,N"(i32 7, i32 -3) nounwind
+
ret i32 0
}