| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -loop-vectorize -S | FileCheck %s |
| |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| |
| ; Test case based on reproducer for |
| ; http://bugs.chromium.org/p/oss-fuzz/issues/detail?id=6477 |
| |
| define void @test1(i32 %n) #0 { |
| ; CHECK-LABEL: @test1( |
| ; CHECK-NEXT: br i1 false, label [[DOTLR_PH_PREHEADER:%.*]], label [[DOT_CRIT_EDGE:%.*]] |
| ; CHECK: .lr.ph.preheader: |
| ; CHECK-NEXT: br label [[DOTLR_PH:%.*]] |
| ; CHECK: .lr.ph: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[DOTLR_PH]] ], [ 0, [[DOTLR_PH_PREHEADER]] ] |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: br i1 true, label [[DOT_CRIT_EDGE_LOOPEXIT:%.*]], label [[DOTLR_PH]], !llvm.loop !0 |
| ; CHECK: ._crit_edge.loopexit: |
| ; CHECK-NEXT: br label [[DOT_CRIT_EDGE]] |
| ; CHECK: ._crit_edge: |
| ; CHECK-NEXT: ret void |
| ; |
| br i1 false, label %.lr.ph, label %._crit_edge |
| |
| .lr.ph: ; preds = %.lr.ph, %0 |
| %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ] |
| %indvars.iv.next = add i64 %indvars.iv, 1 |
| br i1 true, label %._crit_edge, label %.lr.ph, !llvm.loop !0 |
| |
| ._crit_edge: ; preds = %.lr.ph, %0 |
| ret void |
| } |
| |
| !0 = distinct !{!0, !1} |
| !1 = !{!"llvm.loop.interleave.count", i32 2} |
