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1; Test that ComputeNumSignBitsForTargetNode() (SELECT_CCMASK) will help2; DAGCombiner so that it knows that %sel0 is already sign extended.3;4; RUN: llc -mtriple=s390x-linux-gnu -mcpu=z13 -debug-only=isel < %s 2>&1 | FileCheck %s5; REQUIRES: asserts6 7%0 = type <{ ptr, i16, [6 x i8] }>8%1 = type { ptr }9 10define signext i16 @fun(ptr %Arg0, i16 signext %Arg1) {11entry:12 br i1 undef, label %lab0, label %lab113 14lab0:15 %icmp0 = icmp eq i32 undef, 016 %sel0 = select i1 %icmp0, i16 %Arg1, i16 117 br label %lab118 19lab1:20; CHECK: *** MachineFunction at end of ISel ***21; CHECK-LABEL: bb.2.lab1:22; CHECK-NOT: LHR23; CHECK: BRC24 %phi0 = phi i16 [ 2, %entry ], [ %sel0, %lab0 ]25 %sext0 = sext i16 %phi0 to i3226 br i1 undef, label %lab2, label %lab327 28lab2:29 %and0 = and i32 %sext0, 830 %icmp1 = icmp eq i32 %and0, 031 %sel1 = select i1 %icmp1, i16 %phi0, i16 432 ret i16 %sel133 34lab3:35 ret i16 836}37 38