diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp index 4275ff7b51868..a40db7e10f448 100644 --- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp +++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp @@ -15230,7 +15230,8 @@ static SDValue performVSelectCombine(SDNode *N, SelectionDAG &DAG) { } } - if (N0.getOpcode() != ISD::SETCC || CCVT.getVectorNumElements() != 1 || + if (N0.getOpcode() != ISD::SETCC || + CCVT.getVectorElementCount() != ElementCount::getFixed(1) || CCVT.getVectorElementType() != MVT::i1) return SDValue(); diff --git a/llvm/test/CodeGen/AArch64/sve-cmp-select.ll b/llvm/test/CodeGen/AArch64/sve-cmp-select.ll new file mode 100644 index 0000000000000..baaed7ad56559 --- /dev/null +++ b/llvm/test/CodeGen/AArch64/sve-cmp-select.ll @@ -0,0 +1,41 @@ +; RUN: llc -mtriple=aarch64-linux-unknown -mattr=+sve -o - < %s 2>%t | FileCheck %s +; RUN: FileCheck --check-prefix="WARN" --allow-empty %s <%t + +; If this check fails please read test/CodeGen/AArch64/README for instructions on how to resolve it. +; WARN-NOT: warning + +define @vselect_cmp_ne( %a, %b, %c) { + ; CHECK-LABEL: vselect_cmp_ne + ; CHECK: // %bb.0: + ; CHECK-NEXT: ptrue p0.b + ; CHECK-NEXT: cmpne p0.b, p0/z, z0.b, z1.b + ; CHECK-NEXT: sel z0.b, p0, z1.b, z2.b + ; CHECK-NEXT: ret + %cmp = icmp ne %a, %b + %d = select %cmp, %b, %c + ret %d +} + +define @vselect_cmp_sgt( %a, %b, %c) { + ; CHECK-LABEL: vselect_cmp_sgt + ; CHECK: // %bb.0: + ; CHECK-NEXT: ptrue p0.b + ; CHECK-NEXT: cmpgt p0.b, p0/z, z0.b, z1.b + ; CHECK-NEXT: sel z0.b, p0, z1.b, z2.b + ; CHECK-NEXT: ret + %cmp = icmp sgt %a, %b + %d = select %cmp, %b, %c + ret %d +} + +define @vselect_cmp_ugt( %a, %b, %c) { + ; CHECK-LABEL: vselect_cmp_ugt + ; CHECK: // %bb.0: + ; CHECK-NEXT: ptrue p0.b + ; CHECK-NEXT: cmphi p0.b, p0/z, z0.b, z1.b + ; CHECK-NEXT: sel z0.b, p0, z1.b, z2.b + ; CHECK-NEXT: ret + %cmp = icmp ugt %a, %b + %d = select %cmp, %b, %c + ret %d +}