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1; RUN: llc -mtriple=hexagon -hexagon-hwloop-preheader < %s | FileCheck %s2 3; Generate hardware loops when we also need to add a new preheader.4; we should generate two hardware loops for this test case.5 6; CHECK: loop07; CHECK: endloop08; CHECK: loop09; CHECK: endloop010 11@g = external global i3212 13define void @test(ptr nocapture %a, ptr nocapture %b, i32 %n) nounwind {14entry:15 %tobool = icmp eq i32 %n, 016 br i1 %tobool, label %for.body4.preheader, label %for.body.preheader17 18for.body.preheader:19 br label %for.body20 21for.body:22 %arrayidx.phi = phi ptr [ %arrayidx.inc, %for.body ], [ %a, %for.body.preheader ]23 %i.014 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ]24 %0 = load i32, ptr @g, align 425 store i32 %0, ptr %arrayidx.phi, align 426 %inc = add nsw i32 %i.014, 127 %exitcond15 = icmp eq i32 %inc, 328 %arrayidx.inc = getelementptr i32, ptr %arrayidx.phi, i32 129 br i1 %exitcond15, label %for.body4.preheader.loopexit, label %for.body30 31for.body4.preheader.loopexit:32 br label %for.body4.preheader33 34for.body4.preheader:35 br label %for.body436 37for.body4:38 %arrayidx5.phi = phi ptr [ %arrayidx5.inc, %for.body4 ], [ %b, %for.body4.preheader ]39 %i1.013 = phi i32 [ %inc7, %for.body4 ], [ 0, %for.body4.preheader ]40 %1 = load i32, ptr @g, align 441 store i32 %1, ptr %arrayidx5.phi, align 442 %inc7 = add nsw i32 %i1.013, 143 %exitcond = icmp eq i32 %inc7, 344 %arrayidx5.inc = getelementptr i32, ptr %arrayidx5.phi, i32 145 br i1 %exitcond, label %for.end8, label %for.body446 47for.end8:48 ret void49}50