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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt -passes=newgvn -S < %s | FileCheck %s3 4; Function Attrs: noinline norecurse nounwind readonly ssp uwtable5define i32 @mp_unsgn_cmp(i32 %n, ptr nocapture readonly %in1, ptr nocapture readonly %in2) local_unnamed_addr {6; CHECK-LABEL: @mp_unsgn_cmp(7; CHECK-NEXT: entry:8; CHECK-NEXT: [[CMP11:%.*]] = icmp sgt i32 [[N:%.*]], -19; CHECK-NEXT: br i1 [[CMP11]], label [[FOR_INC_PREHEADER:%.*]], label [[IF_ELSE:%.*]]10; CHECK: for.inc.preheader:11; CHECK-NEXT: br label [[FOR_INC:%.*]]12; CHECK: for.inc:13; CHECK-NEXT: [[STOREMERGE2:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_INC]] ], [ 0, [[FOR_INC_PREHEADER]] ]14; CHECK-NEXT: [[IDXPROM:%.*]] = sext i32 [[STOREMERGE2]] to i6415; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[IN1:%.*]], i64 [[IDXPROM]]16; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 417; CHECK-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds i32, ptr [[IN2:%.*]], i64 [[IDXPROM]]18; CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[ARRAYIDX4]], align 419; CHECK-NEXT: [[SUB:%.*]] = sub nsw i32 [[TMP0]], [[TMP1]]20; CHECK-NEXT: [[INC]] = add nsw i32 [[STOREMERGE2]], 121; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i32 [[STOREMERGE2]], [[N]]22; CHECK-NEXT: [[CMP2:%.*]] = icmp eq i32 [[SUB]], 023; CHECK-NEXT: [[OR_COND:%.*]] = and i1 [[CMP2]], [[CMP1]]24; CHECK-NEXT: br i1 [[OR_COND]], label [[FOR_INC]], label [[FOR_END:%.*]]25; CHECK: for.end:26; CHECK-NEXT: [[CMP5:%.*]] = icmp sgt i32 [[SUB]], 027; CHECK-NEXT: br i1 [[CMP5]], label [[IF_END8:%.*]], label [[IF_ELSE]]28; CHECK: if.else:29; CHECK-NEXT: [[SUB1_LCSSA4:%.*]] = phi i32 [ [[SUB]], [[FOR_END]] ], [ 0, [[ENTRY:%.*]] ]30; CHECK-NEXT: [[CMP6:%.*]] = icmp slt i32 [[SUB1_LCSSA4]], 031; CHECK-NEXT: [[DOTSUB1_LCSSA:%.*]] = select i1 [[CMP6]], i32 -1, i32 [[SUB1_LCSSA4]]32; CHECK-NEXT: ret i32 [[DOTSUB1_LCSSA]]33; CHECK: if.end8:34; CHECK-NEXT: ret i32 135;36entry:37 %cmp11 = icmp sgt i32 %n, -138 br i1 %cmp11, label %for.inc.preheader, label %if.else39 40for.inc.preheader: ; preds = %entry41 br label %for.inc42 43for.inc: ; preds = %for.inc.preheader, %for.inc44 %storemerge2 = phi i32 [ %inc, %for.inc ], [ 0, %for.inc.preheader ]45 %idxprom = sext i32 %storemerge2 to i6446 %arrayidx = getelementptr inbounds i32, ptr %in1, i64 %idxprom47 %0 = load i32, ptr %arrayidx, align 448 %arrayidx4 = getelementptr inbounds i32, ptr %in2, i64 %idxprom49 %1 = load i32, ptr %arrayidx4, align 450 %sub = sub nsw i32 %0, %151 %inc = add nsw i32 %storemerge2, 152 %cmp1 = icmp slt i32 %storemerge2, %n53 %cmp2 = icmp eq i32 %sub, 054 %or.cond = and i1 %cmp2, %cmp155;; This is a self-critical edge to for.inc. If we insert predicate info on it, we will insert56;; predicateinfo at the end of this block, and think it dominates everthing using only dfs57;; numbers, instead of proper edge dominance. We would then proceed to propagate the true value58;; of sub == 0 everywhere, making this function only ever return 0.59 br i1 %or.cond, label %for.inc, label %for.end60 61for.end: ; preds = %for.inc62 %sub.lcssa = phi i32 [ %sub, %for.inc ]63 %cmp5 = icmp sgt i32 %sub.lcssa, 064 br i1 %cmp5, label %if.end8, label %if.else65 66if.else: ; preds = %entry, %for.end67 %sub1.lcssa4 = phi i32 [ %sub.lcssa, %for.end ], [ 0, %entry ]68 %cmp6 = icmp slt i32 %sub1.lcssa4, 069 %.sub1.lcssa = select i1 %cmp6, i32 -1, i32 %sub1.lcssa470 ret i32 %.sub1.lcssa71 72if.end8: ; preds = %for.end73 ret i32 174}75 76 77;; This test will generate a copy of a copy of predicateinfo to the multiple uses78;; of branch conditions below. Make sure we don't try to extract operand info.79; Function Attrs: uwtable80define fastcc void @barney() {81; CHECK-LABEL: @barney(82; CHECK-NEXT: bb:83; CHECK-NEXT: br label [[BB22:%.*]]84; CHECK: bb22:85; CHECK-NEXT: br i1 true, label [[BB29:%.*]], label [[BB35:%.*]]86; CHECK: bb29:87; CHECK-NEXT: br i1 true, label [[BB33:%.*]], label [[BB35]]88; CHECK: bb33:89; CHECK-NEXT: br i1 true, label [[BB35]], label [[BB35]]90; CHECK: bb35:91; CHECK-NEXT: unreachable92;93bb:94 br label %bb2295bb22: ; preds = %bb2196 br i1 true, label %bb29, label %bb3597 98 99bb29: ; preds = %bb28100 br i1 true, label %bb33, label %bb35101 102 103bb33: ; preds = %bb31104 br i1 true, label %bb35, label %bb35105 106 107bb35: ; preds = %bb33, %bb29, %bb22108 unreachable109}110 111