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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 62; RUN: opt < %s -passes=loop-interchange -loop-interchange-profitabilities=ignore -cache-line-size=64 -verify-dom-info -verify-loop-info -verify-scev -verify-loop-lcssa -S | FileCheck %s3 4; Test case for issue: https://github.com/llvm/llvm-project/issues/1639545 6define void @test() {7; CHECK-LABEL: define void @test() {8; CHECK-NEXT: [[ENTRY:.*]]:9; CHECK-NEXT: br label %[[OUTER_HEADER:.*]]10; CHECK: [[OUTER_HEADER]]:11; CHECK-NEXT: [[I:%.*]] = phi i8 [ 0, %[[ENTRY]] ], [ [[DOTLCSSA:%.*]], %[[OUTER_LATCH:.*]] ]12; CHECK-NEXT: br label %[[INNER_HEADER:.*]]13; CHECK: [[INNER_HEADER]]:14; CHECK-NEXT: [[J:%.*]] = phi i64 [ 0, %[[OUTER_HEADER]] ], [ [[J_NEXT:%.*]], %[[INNER_LATCH:.*]] ]15; CHECK-NEXT: [[TMP0:%.*]] = phi i8 [ [[I]], %[[OUTER_HEADER]] ], [ [[TMP1:%.*]], %[[INNER_LATCH]] ]16; CHECK-NEXT: br label %[[INNER_BODY:.*]]17; CHECK: [[INNER_BODY]]:18; CHECK-NEXT: br i1 true, label %[[INNER_LATCH]], label %[[INNER_BODY]]19; CHECK: [[INNER_LATCH]]:20; CHECK-NEXT: [[TMP1]] = or i8 [[TMP0]], 021; CHECK-NEXT: [[J_NEXT]] = add i64 [[J]], 122; CHECK-NEXT: br i1 true, label %[[OUTER_LATCH]], label %[[INNER_HEADER]]23; CHECK: [[OUTER_LATCH]]:24; CHECK-NEXT: [[DOTLCSSA]] = phi i8 [ [[TMP1]], %[[INNER_LATCH]] ]25; CHECK-NEXT: br i1 true, label %[[EXIT:.*]], label %[[OUTER_HEADER]]26; CHECK: [[EXIT]]:27; CHECK-NEXT: ret void28;29entry:30 br label %outer.header31 32outer.header:33 %i = phi i8 [ 0, %entry ], [ %1, %outer.latch ]34 br label %inner.header35 36inner.header:37 %j = phi i64 [ 0, %outer.header ], [ %j.next, %inner.latch ]38 %0 = phi i8 [ %i, %outer.header ], [ %1, %inner.latch ]39 br label %inner.body40 41inner.body:42 br i1 true, label %inner.latch, label %inner.body ; another (self) loop, but never taken43 44inner.latch:45 %1 = or i8 %0, 046 %j.next = add i64 %j, 147 br i1 true, label %outer.latch, label %inner.header48 49outer.latch:50 br i1 true, label %exit, label %outer.header51 52exit:53 ret void54}55