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-rw-r--r--include/llvm/Target/TargetCallingConv.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/llvm/Target/TargetCallingConv.h b/include/llvm/Target/TargetCallingConv.h
index a0f2674..9071bfe 100644
--- a/include/llvm/Target/TargetCallingConv.h
+++ b/include/llvm/Target/TargetCallingConv.h
@@ -134,6 +134,8 @@ namespace ISD {
/// Index original Function's argument.
unsigned OrigArgIndex;
+ /// Sentinel value for implicit machine-level input arguments.
+ static const unsigned NoArgIndex = UINT_MAX;
/// Offset in bytes of current input value relative to the beginning of
/// original argument. E.g. if argument was splitted into four 32 bit
@@ -147,6 +149,15 @@ namespace ISD {
VT = vt.getSimpleVT();
ArgVT = argvt;
}
+
+ bool isOrigArg() const {
+ return OrigArgIndex != NoArgIndex;
+ }
+
+ unsigned getOrigArgIndex() const {
+ assert(OrigArgIndex != NoArgIndex && "Implicit machine-level argument");
+ return OrigArgIndex;
+ }
};
/// OutputArg - This struct carries flags and a value for a