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1; RUN: llc -mtriple=hexagon -mcpu=hexagonv5 -enable-pipeliner < %s -pipeliner-experimental-cg=true | FileCheck %s2 3; Make sure we attempt to pipeline all inner most loops.4 5; Check if the first loop is pipelined.6; CHECK: loop0(.LBB0_[[LOOP:.]],7; CHECK: .LBB0_[[LOOP]]:8; CHECK: add(r{{[0-9]+}},r{{[0-9]+}})9; CHECK-NEXT: memw(r{{[0-9]+}}++#4)10; CHECK-NEXT: endloop011 12; Check if the second loop is pipelined.13; CHECK: loop0(.LBB0_[[LOOP:.]],14; CHECK: .LBB0_[[LOOP]]:15; CHECK: add(r{{[0-9]+}},r{{[0-9]+}})16; CHECK-NEXT: memw(r{{[0-9]+}}++#4)17; CHECK-NEXT: endloop018 19define i32 @test(ptr %a, i32 %n, i32 %l) {20entry:21 %cmp23 = icmp sgt i32 %n, 022 br i1 %cmp23, label %for.body3.lr.ph.preheader, label %for.end1423 24for.body3.lr.ph.preheader:25 br label %for.body3.lr.ph26 27for.body3.lr.ph:28 %sum1.026 = phi i32 [ %add8, %for.inc12 ], [ 0, %for.body3.lr.ph.preheader ]29 %sum.025 = phi i32 [ %add, %for.inc12 ], [ 0, %for.body3.lr.ph.preheader ]30 %j.024 = phi i32 [ %inc13, %for.inc12 ], [ 0, %for.body3.lr.ph.preheader ]31 br label %for.body332 33for.body3:34 %sum.118 = phi i32 [ %sum.025, %for.body3.lr.ph ], [ %add, %for.body3 ]35 %arrayidx.phi = phi ptr [ %a, %for.body3.lr.ph ], [ %arrayidx.inc, %for.body3 ]36 %i.017 = phi i32 [ 0, %for.body3.lr.ph ], [ %inc, %for.body3 ]37 %0 = load i32, ptr %arrayidx.phi, align 438 %add = add nsw i32 %0, %sum.11839 %inc = add nsw i32 %i.017, 140 %exitcond = icmp eq i32 %inc, %n41 %arrayidx.inc = getelementptr i32, ptr %arrayidx.phi, i32 142 br i1 %exitcond, label %for.end, label %for.body343 44for.end:45 tail call void @bar(ptr %a) #246 br label %for.body647 48for.body6:49 %sum1.121 = phi i32 [ %sum1.026, %for.end ], [ %add8, %for.body6 ]50 %arrayidx7.phi = phi ptr [ %a, %for.end ], [ %arrayidx7.inc, %for.body6 ]51 %i.120 = phi i32 [ 0, %for.end ], [ %inc10, %for.body6 ]52 %1 = load i32, ptr %arrayidx7.phi, align 453 %add8 = add nsw i32 %1, %sum1.12154 %inc10 = add nsw i32 %i.120, 155 %exitcond29 = icmp eq i32 %inc10, %n56 %arrayidx7.inc = getelementptr i32, ptr %arrayidx7.phi, i32 157 br i1 %exitcond29, label %for.inc12, label %for.body658 59for.inc12:60 %inc13 = add nsw i32 %j.024, 161 %exitcond30 = icmp eq i32 %inc13, %n62 br i1 %exitcond30, label %for.end14.loopexit, label %for.body3.lr.ph63 64for.end14.loopexit:65 br label %for.end1466 67for.end14:68 %sum1.0.lcssa = phi i32 [ 0, %entry ], [ %add8, %for.end14.loopexit ]69 %sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.end14.loopexit ]70 %add15 = add nsw i32 %sum1.0.lcssa, %sum.0.lcssa71 ret i32 %add1572}73 74declare void @bar(ptr)75 76