1; RUN: llc -mtriple=thumbv7-apple-ios -disable-block-placement < %s | FileCheck %s 2; RUN: llc -mtriple=armv7-apple-ios -disable-block-placement < %s | FileCheck %s 3 4; LLVM IR optimizers canonicalize icmp+select this way. 5; Make sure that TwoAddressInstructionPass can commute the corresponding 6; MOVCC instructions to avoid excessive copies in one of the if blocks. 7; 8; CHECK: %if.then 9; CHECK-NOT: mov 10; CHECK: movlo 11; CHECK: movlo 12; CHECK-NOT: mov 13 14; CHECK: %if.else 15; CHECK-NOT: mov 16; CHECK: movls 17; CHECK: movls 18; CHECK-NOT: mov 19 20; This is really an LSR test: Make sure that cmp is using the incremented 21; induction variable. 22; CHECK: %if.end8 23; CHECK: add{{(s|\.w)?}} [[IV:r[0-9]+]], {{.*}}#1 24; CHECK: cmp [[IV]], # 25 26define i32 @f(i32* nocapture %a, i32 %Pref) nounwind ssp { 27entry: 28 br label %for.body 29 30for.body: ; preds = %entry, %if.end8 31 %i.012 = phi i32 [ 0, %entry ], [ %inc, %if.end8 ] 32 %BestCost.011 = phi i32 [ -1, %entry ], [ %BestCost.1, %if.end8 ] 33 %BestIdx.010 = phi i32 [ 0, %entry ], [ %BestIdx.1, %if.end8 ] 34 %arrayidx = getelementptr inbounds i32, i32* %a, i32 %i.012 35 %0 = load i32, i32* %arrayidx, align 4 36 %mul = mul i32 %0, %0 37 %sub = add nsw i32 %i.012, -5 38 %cmp2 = icmp eq i32 %sub, %Pref 39 br i1 %cmp2, label %if.else, label %if.then 40 41if.then: ; preds = %for.body 42 %cmp3 = icmp ult i32 %mul, %BestCost.011 43 %i.0.BestIdx.0 = select i1 %cmp3, i32 %i.012, i32 %BestIdx.010 44 %mul.BestCost.0 = select i1 %cmp3, i32 %mul, i32 %BestCost.011 45 br label %if.end8 46 47if.else: ; preds = %for.body 48 %cmp5 = icmp ugt i32 %mul, %BestCost.011 49 %BestIdx.0.i.0 = select i1 %cmp5, i32 %BestIdx.010, i32 %i.012 50 %BestCost.0.mul = select i1 %cmp5, i32 %BestCost.011, i32 %mul 51 br label %if.end8 52 53if.end8: ; preds = %if.else, %if.then 54 %BestIdx.1 = phi i32 [ %i.0.BestIdx.0, %if.then ], [ %BestIdx.0.i.0, %if.else ] 55 %BestCost.1 = phi i32 [ %mul.BestCost.0, %if.then ], [ %BestCost.0.mul, %if.else ] 56 store i32 %mul, i32* %arrayidx, align 4 57 %inc = add i32 %i.012, 1 58 %cmp = icmp eq i32 %inc, 11 59 br i1 %cmp, label %for.end, label %for.body 60 61for.end: ; preds = %if.end8 62 ret i32 %BestIdx.1 63} 64