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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s3 4target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"5 6declare void @use(i16)7 8define void @test_loop_add_rec_used_in_adjacent_loop(i8 %len.n, i16 %a) {9; CHECK-LABEL: @test_loop_add_rec_used_in_adjacent_loop(10; CHECK-NEXT: entry:11; CHECK-NEXT: [[LEN:%.*]] = zext i8 [[LEN_N:%.*]] to i1612; CHECK-NEXT: [[LEN_NEG:%.*]] = icmp uge i16 [[LEN]], [[A:%.*]]13; CHECK-NEXT: br i1 [[LEN_NEG]], label [[EXIT:%.*]], label [[LOOP_1_PH:%.*]]14; CHECK: loop.1.ph:15; CHECK-NEXT: br label [[LOOP_1:%.*]]16; CHECK: loop.1:17; CHECK-NEXT: [[IV:%.*]] = phi i16 [ 0, [[LOOP_1_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP_1]] ]18; CHECK-NEXT: [[C_0:%.*]] = icmp eq i16 [[IV]], [[A]]19; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i16 [[IV]], 120; CHECK-NEXT: br i1 [[C_0]], label [[LOOP_2_HEADER:%.*]], label [[LOOP_1]]21; CHECK: loop.2.header:22; CHECK-NEXT: [[IV_2:%.*]] = phi i16 [ [[IV]], [[LOOP_1]] ], [ [[IV]], [[LOOP_2_LATCH:%.*]] ]23; CHECK-NEXT: [[C:%.*]] = icmp eq i16 [[IV_2]], [[LEN]]24; CHECK-NEXT: br i1 [[C]], label [[EXIT]], label [[FOR_BODY:%.*]]25; CHECK: for.body:26; CHECK-NEXT: [[T_2:%.*]] = icmp ult i16 [[IV_2]], [[A]]27; CHECK-NEXT: [[AND:%.*]] = and i1 true, [[T_2]]28; CHECK-NEXT: br i1 [[AND]], label [[LOOP_2_LATCH]], label [[EXIT]]29; CHECK: loop.2.latch:30; CHECK-NEXT: call void @use(i16 [[IV_2]])31; CHECK-NEXT: br label [[LOOP_2_HEADER]]32; CHECK: exit:33; CHECK-NEXT: ret void34;35entry:36 %len = zext i8 %len.n to i1637 %len.neg = icmp uge i16 %len, %a38 br i1 %len.neg, label %exit, label %loop.1.ph39 40loop.1.ph:41 br label %loop.142 43loop.1:44 %iv = phi i16 [ 0, %loop.1.ph ], [ %iv.next, %loop.1 ]45 %c.0 = icmp eq i16 %iv, %a46 %iv.next = add nuw nsw i16 %iv, 147 br i1 %c.0, label %loop.2.header, label %loop.148 49loop.2.header:50 %iv.2 = phi i16 [ %iv, %loop.1 ], [ %iv, %loop.2.latch ]51 %c = icmp eq i16 %iv.2, %len52 br i1 %c, label %exit, label %for.body53 54for.body:55 %t.1 = icmp uge i16 %iv.2, 056 %t.2 = icmp ult i16 %iv.2, %a57 %and = and i1 %t.1, %t.258 br i1 %and, label %loop.2.latch, label %exit59 60loop.2.latch:61 call void @use(i16 %iv.2)62 br label %loop.2.header63 64exit:65 ret void66}67 68define void @test_adjacen_loops_pointer_iv_crash() {69; CHECK-LABEL: @test_adjacen_loops_pointer_iv_crash(70; CHECK-NEXT: entry:71; CHECK-NEXT: br label [[LOOP_1:%.*]]72; CHECK: loop.1:73; CHECK-NEXT: [[IV_1:%.*]] = phi ptr [ null, [[ENTRY:%.*]] ], [ [[IV_1_NEXT:%.*]], [[LOOP_1]] ]74; CHECK-NEXT: [[IV_1_NEXT]] = getelementptr ptr, ptr [[IV_1]], i32 175; CHECK-NEXT: br i1 false, label [[LOOP_1]], label [[LOOP_2:%.*]]76; CHECK: loop.2:77; CHECK-NEXT: [[__FIRST_ADDR_1_LCSSA:%.*]] = phi ptr [ [[IV_1]], [[LOOP_1]] ], [ [[IV_1]], [[LOOP_2_LATCH:%.*]] ]78; CHECK-NEXT: [[CMP7:%.*]] = icmp eq ptr [[__FIRST_ADDR_1_LCSSA]], null79; CHECK-NEXT: br i1 [[CMP7]], label [[IF_THEN8:%.*]], label [[LOOP_2_LATCH]]80; CHECK: if.then8:81; CHECK-NEXT: ret void82; CHECK: loop.2.latch:83; CHECK-NEXT: br label [[LOOP_2]]84;85entry:86 br label %loop.187 88loop.1:89 %iv.1 = phi ptr [ null, %entry ], [ %iv.1.next, %loop.1 ]90 %iv.1.next = getelementptr ptr, ptr %iv.1, i32 191 br i1 false, label %loop.1, label %loop.292 93loop.2:94 %__first.addr.1.lcssa = phi ptr [ %iv.1, %loop.1 ], [ %iv.1, %loop.2.latch ]95 %cmp7 = icmp eq ptr %__first.addr.1.lcssa, null96 br i1 %cmp7, label %if.then8, label %loop.2.latch97 98if.then8: ; preds = %do.body99 ret void100 101loop.2.latch:102 br label %loop.2103}104 105