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1; RUN: opt -passes=hardware-loops -force-hardware-loops=true -hardware-loop-decrement=1 -hardware-loop-counter-bitwidth=32 -S %s -o - | FileCheck %s2; RUN: opt -passes=hardware-loops -force-hardware-loops=true -hardware-loop-decrement=1 -hardware-loop-counter-bitwidth=32 -force-hardware-loop-phi=true -S %s -o - | FileCheck %s3; RUN: opt -passes=hardware-loops -force-hardware-loops=true -hardware-loop-decrement=1 -hardware-loop-counter-bitwidth=32 -force-nested-hardware-loop=true -S %s -o - | FileCheck %s4 5; CHECK-LABEL: float_counter6; CHECK-NOT: set.loop.iterations7; CHECK-NOT: loop.decrement8define void @float_counter(ptr nocapture %A, float %N) {9entry:10 %cmp6 = fcmp ogt float %N, 0.000000e+0011 br i1 %cmp6, label %while.body, label %while.end12 13while.body:14 %i.07 = phi i32 [ %inc, %while.body ], [ 0, %entry ]15 %arrayidx = getelementptr inbounds i32, ptr %A, i32 %i.0716 store i32 %i.07, ptr %arrayidx, align 417 %inc = add i32 %i.07, 118 %conv = uitofp i32 %inc to float19 %cmp = fcmp olt float %conv, %N20 br i1 %cmp, label %while.body, label %while.end21 22while.end:23 ret void24}25 26; CHECK-LABEL: variant_counter27; CHECK-NOT: set.loop.iterations28; CHECK-NOT: loop.decrement29define void @variant_counter(ptr nocapture %A, ptr nocapture readonly %B) {30entry:31 %0 = load i32, ptr %B, align 432 %cmp7 = icmp eq i32 %0, 033 br i1 %cmp7, label %while.end, label %while.body34 35while.body:36 %i.08 = phi i32 [ %inc, %while.body ], [ 0, %entry ]37 %arrayidx1 = getelementptr inbounds i32, ptr %A, i32 %i.0838 store i32 %i.08, ptr %arrayidx1, align 439 %inc = add nuw i32 %i.08, 140 %arrayidx = getelementptr inbounds i32, ptr %B, i32 %inc41 %1 = load i32, ptr %arrayidx, align 442 %cmp = icmp ult i32 %inc, %143 br i1 %cmp, label %while.body, label %while.end44 45while.end:46 ret void47}48 49; CHECK-LABEL: variant_counter250; CHECK-NOT: set.loop.iterations51; CHECK-NOT: loop.decrement52define void @variant_counter2(ptr, ptr, ptr) {53 %4 = icmp eq ptr %0, %154 br i1 %4, label %9, label %555 565: ; preds = %357 %6 = getelementptr inbounds i64, ptr %2, i64 158 %7 = load i64, ptr %6, align 859 br label %1060 618: ; preds = %1062 store i64 %14, ptr %6, align 863 br label %964 659: ; preds = %8, %366 ret void67 6810: ; preds = %5, %1069 %11 = phi i64 [ %7, %5 ], [ %14, %10 ]70 %12 = phi i32 [ 0, %5 ], [ %15, %10 ]71 %13 = phi ptr [ %0, %5 ], [ %16, %10 ]72 %14 = shl nsw i64 %11, 473 %15 = add nuw nsw i32 %12, 174 %16 = getelementptr inbounds i8, ptr %13, i64 175 %17 = icmp ugt i32 %12, 1476 %18 = icmp eq ptr %16, %177 %19 = or i1 %18, %1778 br i1 %19, label %8, label %1079}80