diff options
| -rw-r--r-- | include/llvm/Target/TargetLowering.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/llvm/Target/TargetLowering.h b/include/llvm/Target/TargetLowering.h index c46995e5d2..f3f4eda3b6 100644 --- a/include/llvm/Target/TargetLowering.h +++ b/include/llvm/Target/TargetLowering.h @@ -176,6 +176,26 @@ public: return TransformToType[VT]; } + /// getTypeToExpandTo - For types supported by the target, this is an + /// identity function. For types that must be expanded (i.e. integer types + /// that are larger than the largest integer register or illegal floating + /// point types), this returns the largest legal type it will be expanded to. + MVT::ValueType getTypeToExpandTo(MVT::ValueType VT) const { + while (true) { + switch (getTypeAction(VT)) { + case Legal: + return VT; + case Expand: + VT = TransformToType[VT]; + break; + default: + assert(false && "Type is not legal nor is it to be expanded!"); + return VT; + } + } + return VT; + } + /// getPackedTypeBreakdown - Packed types are broken down into some number of /// legal first class types. For example, <8 x float> maps to 2 MVT::v4f32 /// with Altivec or SSE1, or 8 promoted MVT::f64 values with the X86 FP stack. |