| ; RUN: llc < %s -march=x86 | FileCheck %s |
| ; PR2659 |
| |
| define i32 @binomial(i32 %n, i32 %k) nounwind { |
| entry: |
| %cmp = icmp ugt i32 %k, %n ; <i1> [#uses=1] |
| br i1 %cmp, label %ifthen, label %forcond.preheader |
| |
| forcond.preheader: ; preds = %entry |
| %cmp44 = icmp eq i32 %k, 0 ; <i1> [#uses=1] |
| br i1 %cmp44, label %afterfor, label %forbody |
| |
| ifthen: ; preds = %entry |
| ret i32 0 |
| ; CHECK: forbody |
| ; CHECK-NOT: mov |
| forbody: ; preds = %forbody, %forcond.preheader |
| %indvar = phi i32 [ 0, %forcond.preheader ], [ %divisor.02, %forbody ] ; <i32> [#uses=3] |
| %accumulator.01 = phi i32 [ 1, %forcond.preheader ], [ %div, %forbody ] ; <i32> [#uses=1] |
| %divisor.02 = add i32 %indvar, 1 ; <i32> [#uses=2] |
| %n.addr.03 = sub i32 %n, %indvar ; <i32> [#uses=1] |
| %mul = mul i32 %n.addr.03, %accumulator.01 ; <i32> [#uses=1] |
| %div = udiv i32 %mul, %divisor.02 ; <i32> [#uses=2] |
| %inc = add i32 %indvar, 2 ; <i32> [#uses=1] |
| %cmp4 = icmp ugt i32 %inc, %k ; <i1> [#uses=1] |
| br i1 %cmp4, label %afterfor, label %forbody |
| |
| afterfor: ; preds = %forbody, %forcond.preheader |
| %accumulator.0.lcssa = phi i32 [ 1, %forcond.preheader ], [ %div, %forbody ] ; <i32> [#uses=1] |
| ret i32 %accumulator.0.lcssa |
| } |