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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt -passes=loop-unroll -S < %s | FileCheck %s3 4; Can't recursively delete %c.addr.07 without deleting %conv15; and thus invalidating iteration.6define void @PR50368(i32 %c, i64 %x) {7; CHECK-LABEL: @PR50368(8; CHECK-NEXT: entry:9; CHECK-NEXT: br label [[LOOP_PEEL_BEGIN:%.*]]10; CHECK: loop.peel.begin:11; CHECK-NEXT: br label [[LOOP_PEEL:%.*]]12; CHECK: loop.peel:13; CHECK-NEXT: br i1 false, label [[EXIT:%.*]], label [[LOOP_PEEL_NEXT:%.*]]14; CHECK: loop.peel.next:15; CHECK-NEXT: br label [[LOOP_PEEL_NEXT1:%.*]]16; CHECK: loop.peel.next1:17; CHECK-NEXT: br label [[ENTRY_PEEL_NEWPH:%.*]]18; CHECK: entry.peel.newph:19; CHECK-NEXT: br label [[LOOP:%.*]]20; CHECK: loop:21; CHECK-NEXT: br i1 false, label [[EXIT_LOOPEXIT:%.*]], label [[LOOP]], !llvm.loop [[LOOP0:![0-9]+]]22; CHECK: exit.loopexit:23; CHECK-NEXT: br label [[EXIT]]24; CHECK: exit:25; CHECK-NEXT: ret void26;27entry:28 br label %loop29 30loop:31 %0 = phi i64 [ 0, %loop ], [ %x, %entry ]32 %c.addr.07 = phi i32 [ %conv1, %loop ], [ %c, %entry ]33 %conv1 = trunc i64 undef to i3234 br i1 false, label %exit, label %loop35 36exit:37 ret void38}39 40 41define void @dead_chain(i64 %a) {42; CHECK-LABEL: @dead_chain(43; CHECK-NEXT: entry:44; CHECK-NEXT: br label [[LOOP:%.*]]45; CHECK: loop:46; CHECK-NEXT: ret void47;48entry:49 br label %loop50 51loop:52 %conv1 = trunc i64 %a to i3253 %and = and i32 %conv1, 1554 %shl = shl i32 %and, 1555 br i1 true, label %exit, label %loop56 57exit:58 ret void59}60 61