| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -passes=newgvn -S < %s | FileCheck %s |
| |
| ; Function Attrs: noinline norecurse nounwind readonly ssp uwtable |
| define i32 @mp_unsgn_cmp(i32 %n, ptr nocapture readonly %in1, ptr nocapture readonly %in2) local_unnamed_addr { |
| ; CHECK-LABEL: @mp_unsgn_cmp( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[CMP11:%.*]] = icmp sgt i32 [[N:%.*]], -1 |
| ; CHECK-NEXT: br i1 [[CMP11]], label [[FOR_INC_PREHEADER:%.*]], label [[IF_ELSE:%.*]] |
| ; CHECK: for.inc.preheader: |
| ; CHECK-NEXT: br label [[FOR_INC:%.*]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[STOREMERGE2:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_INC]] ], [ 0, [[FOR_INC_PREHEADER]] ] |
| ; CHECK-NEXT: [[IDXPROM:%.*]] = sext i32 [[STOREMERGE2]] to i64 |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[IN1:%.*]], i64 [[IDXPROM]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds i32, ptr [[IN2:%.*]], i64 [[IDXPROM]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[ARRAYIDX4]], align 4 |
| ; CHECK-NEXT: [[SUB:%.*]] = sub nsw i32 [[TMP0]], [[TMP1]] |
| ; CHECK-NEXT: [[INC]] = add nsw i32 [[STOREMERGE2]], 1 |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i32 [[STOREMERGE2]], [[N]] |
| ; CHECK-NEXT: [[CMP2:%.*]] = icmp eq i32 [[SUB]], 0 |
| ; CHECK-NEXT: [[OR_COND:%.*]] = and i1 [[CMP2]], [[CMP1]] |
| ; CHECK-NEXT: br i1 [[OR_COND]], label [[FOR_INC]], label [[FOR_END:%.*]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: [[CMP5:%.*]] = icmp sgt i32 [[SUB]], 0 |
| ; CHECK-NEXT: br i1 [[CMP5]], label [[IF_END8:%.*]], label [[IF_ELSE]] |
| ; CHECK: if.else: |
| ; CHECK-NEXT: [[SUB1_LCSSA4:%.*]] = phi i32 [ [[SUB]], [[FOR_END]] ], [ 0, [[ENTRY:%.*]] ] |
| ; CHECK-NEXT: [[CMP6:%.*]] = icmp slt i32 [[SUB1_LCSSA4]], 0 |
| ; CHECK-NEXT: [[DOTSUB1_LCSSA:%.*]] = select i1 [[CMP6]], i32 -1, i32 [[SUB1_LCSSA4]] |
| ; CHECK-NEXT: ret i32 [[DOTSUB1_LCSSA]] |
| ; CHECK: if.end8: |
| ; CHECK-NEXT: ret i32 1 |
| ; |
| entry: |
| %cmp11 = icmp sgt i32 %n, -1 |
| br i1 %cmp11, label %for.inc.preheader, label %if.else |
| |
| for.inc.preheader: ; preds = %entry |
| br label %for.inc |
| |
| for.inc: ; preds = %for.inc.preheader, %for.inc |
| %storemerge2 = phi i32 [ %inc, %for.inc ], [ 0, %for.inc.preheader ] |
| %idxprom = sext i32 %storemerge2 to i64 |
| %arrayidx = getelementptr inbounds i32, ptr %in1, i64 %idxprom |
| %0 = load i32, ptr %arrayidx, align 4 |
| %arrayidx4 = getelementptr inbounds i32, ptr %in2, i64 %idxprom |
| %1 = load i32, ptr %arrayidx4, align 4 |
| %sub = sub nsw i32 %0, %1 |
| %inc = add nsw i32 %storemerge2, 1 |
| %cmp1 = icmp slt i32 %storemerge2, %n |
| %cmp2 = icmp eq i32 %sub, 0 |
| %or.cond = and i1 %cmp2, %cmp1 |
| ;; This is a self-critical edge to for.inc. If we insert predicate info on it, we will insert |
| ;; predicateinfo at the end of this block, and think it dominates everthing using only dfs |
| ;; numbers, instead of proper edge dominance. We would then proceed to propagate the true value |
| ;; of sub == 0 everywhere, making this function only ever return 0. |
| br i1 %or.cond, label %for.inc, label %for.end |
| |
| for.end: ; preds = %for.inc |
| %sub.lcssa = phi i32 [ %sub, %for.inc ] |
| %cmp5 = icmp sgt i32 %sub.lcssa, 0 |
| br i1 %cmp5, label %if.end8, label %if.else |
| |
| if.else: ; preds = %entry, %for.end |
| %sub1.lcssa4 = phi i32 [ %sub.lcssa, %for.end ], [ 0, %entry ] |
| %cmp6 = icmp slt i32 %sub1.lcssa4, 0 |
| %.sub1.lcssa = select i1 %cmp6, i32 -1, i32 %sub1.lcssa4 |
| ret i32 %.sub1.lcssa |
| |
| if.end8: ; preds = %for.end |
| ret i32 1 |
| } |
| |
| |
| ;; This test will generate a copy of a copy of predicateinfo to the multiple uses |
| ;; of branch conditions below. Make sure we don't try to extract operand info. |
| ; Function Attrs: uwtable |
| define fastcc void @barney() { |
| ; CHECK-LABEL: @barney( |
| ; CHECK-NEXT: bb: |
| ; CHECK-NEXT: br label [[BB22:%.*]] |
| ; CHECK: bb22: |
| ; CHECK-NEXT: br i1 undef, label [[BB29:%.*]], label [[BB35:%.*]] |
| ; CHECK: bb29: |
| ; CHECK-NEXT: br i1 true, label [[BB33:%.*]], label [[BB35]] |
| ; CHECK: bb33: |
| ; CHECK-NEXT: br i1 true, label [[BB35]], label [[BB35]] |
| ; CHECK: bb35: |
| ; CHECK-NEXT: unreachable |
| ; |
| bb: |
| br label %bb22 |
| bb22: ; preds = %bb21 |
| %tmp23 = icmp eq i32 undef, 2 |
| br i1 %tmp23, label %bb29, label %bb35 |
| |
| |
| bb29: ; preds = %bb28 |
| br i1 %tmp23, label %bb33, label %bb35 |
| |
| |
| bb33: ; preds = %bb31 |
| br i1 %tmp23, label %bb35, label %bb35 |
| |
| |
| bb35: ; preds = %bb33, %bb29, %bb22 |
| unreachable |
| } |
| |