Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Transforms/LoopUnroll/runtime-loop-multiexit-dom-verify.ll

@@ -1,126 +0,0 @@
-; RUN: opt < %s -loop-unroll -unroll-runtime=true -unroll-runtime-epilog=false -unroll-runtime-multi-exit=true -unroll-count=4  -verify-dom-info -S | FileCheck %s
-
-; REQUIRES: asserts
-; The tests below are for verifying dom tree after runtime unrolling
-; with multiple exit/exiting blocks.
-
-; We explicitly set the unroll count so that expensiveTripCount computation is allowed.
-
-; mergedexit block has edges from loop exit blocks.
-define i64 @test1() {
-; CHECK-LABEL: test1(
-; CHECK-LABEL: headerexit:
-; CHECK-NEXT:    %addphi = phi i64 [ %add.iv, %header ], [ %add.iv.1, %header.1 ], [ %add.iv.2, %header.2 ], [ %add.iv.3, %header.3 ]
-; CHECK-NEXT:    br label %mergedexit
-; CHECK-LABEL: latchexit:
-; CHECK-NEXT:    %shftphi = phi i64 [ %shft, %latch ], [ %shft.1, %latch.1 ], [ %shft.2, %latch.2 ], [ %shft.3, %latch.3 ]
-; CHECK-NEXT:    br label %mergedexit
-; CHECK-LABEL: mergedexit:
-; CHECK-NEXT:    %retval = phi i64 [ %addphi, %headerexit ], [ %shftphi, %latchexit ]
-; CHECK-NEXT:    ret i64 %retval
-entry:
-  br label %preheader
-
-preheader:                                              ; preds = %bb
-  %trip = zext i32 undef to i64
-  br label %header
-
-header:                                              ; preds = %latch, %preheader
-  %iv = phi i64 [ 2, %preheader ], [ %add.iv, %latch ]
-  %add.iv = add nuw nsw i64 %iv, 2
-  %cmp1 = icmp ult i64 %add.iv, %trip
-  br i1 %cmp1, label %latch, label %headerexit
-
-latch:                                             ; preds = %header
-  %shft = ashr i64 %add.iv, 1
-  %cmp2 = icmp ult i64 %shft, %trip
-  br i1 %cmp2, label %header, label %latchexit
-
-headerexit:                                              ; preds = %header
-  %addphi = phi i64 [ %add.iv, %header ]
-  br label %mergedexit
-
-latchexit:                                              ; preds = %latch
- %shftphi = phi i64 [ %shft, %latch ]
-  br label %mergedexit
-
-mergedexit:                                              ; preds = %latchexit, %headerexit
-  %retval = phi i64 [ %addphi, %headerexit ], [ %shftphi, %latchexit ]
-  ret i64 %retval
-}
-
-; mergedexit has edges from loop exit blocks and a block outside the loop.
-define  void @test2(i1 %cond, i32 %n) {
-; CHECK-LABEL: header.1:
-; CHECK-NEXT:    %add.iv.1 = add nuw nsw i64 %add.iv, 2
-; CHECK:         br i1 %cmp1.1, label %latch.1, label %headerexit
-; CHECK-LABEL: latch.3:
-; CHECK:         %cmp2.3 = icmp ult i64 %shft.3, %trip
-; CHECK-NEXT:    br i1 %cmp2.3, label %header, label %latchexit, !llvm.loop
-entry:
-  br i1 %cond, label %preheader, label %mergedexit
-
-preheader:                                              ; preds = %entry
-  %trip = zext i32 %n to i64
-  br label %header
-
-header:                                              ; preds = %latch, %preheader
-  %iv = phi i64 [ 2, %preheader ], [ %add.iv, %latch ]
-  %add.iv = add nuw nsw i64 %iv, 2
-  %cmp1 = icmp ult i64 %add.iv, %trip
-  br i1 %cmp1, label %latch, label %headerexit
-
-latch:                                             ; preds = %header
-  %shft = ashr i64 %add.iv, 1
-  %cmp2 = icmp ult i64 %shft, %trip
-  br i1 %cmp2, label %header, label %latchexit
-
-headerexit:                                              ; preds = %header
-  br label %mergedexit
-
-latchexit:                                              ; preds = %latch
-  br label %mergedexit
-
-mergedexit:                                              ; preds = %latchexit, %headerexit, %entry
-  ret void
-}
-
-
-; exitsucc is from loop exit block only.
-define i64 @test3(i32 %n) {
-; CHECK-LABEL: test3(
-; CHECK-LABEL:  headerexit:
-; CHECK-NEXT:     br label %exitsucc
-; CHECK-LABEL:  latchexit:
-; CHECK-NEXT:     %shftphi = phi i64 [ %shft, %latch ], [ %shft.1, %latch.1 ], [ %shft.2, %latch.2 ], [ %shft.3, %latch.3 ]
-; CHECK-NEXT:     ret i64 %shftphi
-; CHECK-LABEL:  exitsucc:
-; CHECK-NEXT:     ret i64 96
-entry:
-  br label %preheader
-
-preheader:                                              ; preds = %bb
-  %trip = zext i32 %n to i64
-  br label %header
-
-header:                                              ; preds = %latch, %preheader
-  %iv = phi i64 [ 2, %preheader ], [ %add.iv, %latch ]
-  %add.iv = add nuw nsw i64 %iv, 2
-  %cmp1 = icmp ult i64 %add.iv, %trip
-  br i1 %cmp1, label %latch, label %headerexit
-
-latch:                                             ; preds = %header
-  %shft = ashr i64 %add.iv, 1
-  %cmp2 = icmp ult i64 %shft, %trip
-  br i1 %cmp2, label %header, label %latchexit
-
-headerexit:                                              ; preds = %header
-  br label %exitsucc
-
-latchexit:                                              ; preds = %latch
-  %shftphi = phi i64 [ %shft, %latch ]
-  ret i64 %shftphi
-
-exitsucc:                                              ; preds = %headerexit
-  ret i64 96
-}