diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMISelLowering.cpp | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/llvm/lib/Target/ARM/ARMISelLowering.cpp b/llvm/lib/Target/ARM/ARMISelLowering.cpp index 0f8cdad983d..df840d723e3 100644 --- a/llvm/lib/Target/ARM/ARMISelLowering.cpp +++ b/llvm/lib/Target/ARM/ARMISelLowering.cpp @@ -9480,8 +9480,11 @@ AddCombineBUILD_VECTORToVPADDL(SDNode *N, SDValue N0, SDValue N1, return SDValue(); } - // Don't generate vpaddl+vmovn; we'll match it to vpadd later. - if (Vec.getValueType().getVectorElementType() == VT.getVectorElementType()) + // Don't generate vpaddl+vmovn; we'll match it to vpadd later. Also don't try + // to handle an i8 -> i32 situation (or similar). vpaddl can only double the + // size. + if (2 * Vec.getValueType().getVectorElementType().getSizeInBits() != + VT.getVectorElementType().getSizeInBits()) return SDValue(); // Create VPADDL node. |
