Add support for the 'N' inline asm constraint.
Patch by Jack Carter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156284 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MipsISelLowering.cpp b/lib/Target/Mips/MipsISelLowering.cpp
index 3f445a0..ded6aa0 100644
--- a/lib/Target/Mips/MipsISelLowering.cpp
+++ b/lib/Target/Mips/MipsISelLowering.cpp
@@ -3043,6 +3043,7 @@
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;
@@ -3135,6 +3136,16 @@
}
}
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()) {