Support the 'J' constraint.
Patch by Jack Carter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156280 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MipsISelLowering.cpp b/lib/Target/Mips/MipsISelLowering.cpp
index 13665ee..97332cf 100644
--- a/lib/Target/Mips/MipsISelLowering.cpp
+++ b/lib/Target/Mips/MipsISelLowering.cpp
@@ -3040,6 +3040,7 @@
weight = CW_Register;
break;
case 'I': // signed 16 bit immediate
+ case 'J': // integer zero
if (isa<ConstantInt>(CallOperandVal))
weight = CW_Constant;
break;
@@ -3102,6 +3103,16 @@
}
}
return;
+ case 'J': // integer zero
+ if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op)) {
+ EVT Type = Op.getValueType();
+ int64_t Val = C->getZExtValue();
+ if (Val == 0) {
+ Result = DAG.getTargetConstant(0, Type);
+ break;
+ }
+ }
+ return;
}
if (Result.getNode()) {