1 ; RUN: llc -mtriple=arm64-unknown-unknown -print-lsr-output < %s 2>&1 | FileCheck %s 2 3 declare void @foo(i64) 4 5 ; Verify that redundant adds aren't inserted by LSR. 6 ; CHECK-LABEL: @bar( 7 define void @bar(double* %A) { 8 entry: 9 br label %while.cond 10 11 while.cond: 12 ; CHECK-LABEL: while.cond: 13 ; CHECK: add i64 %lsr.iv, 1 14 ; CHECK-NOT: add i64 %lsr.iv, 1 15 ; CHECK-LABEL: land.rhs: 16 %indvars.iv28 = phi i64 [ %indvars.iv.next29, %land.rhs ], [ 50, %entry ] 17 %cmp = icmp sgt i64 %indvars.iv28, 0 18 br i1 %cmp, label %land.rhs, label %while.end 19 20 land.rhs: 21 %indvars.iv.next29 = add nsw i64 %indvars.iv28, -1 22 %arrayidx = getelementptr inbounds double, double* %A, i64 %indvars.iv.next29 23 %Aload = load double, double* %arrayidx, align 8 24 %cmp1 = fcmp oeq double %Aload, 0.000000e+00 25 br i1 %cmp1, label %while.cond, label %if.end 26 27 while.end: 28 %indvars.iv28.lcssa = phi i64 [ %indvars.iv28, %while.cond ] 29 tail call void @foo(i64 %indvars.iv28.lcssa) 30 br label %if.end 31 32 if.end: 33 ret void 34 } 35
