llvm/test/Transforms/Util/PredicateInfo/diamond.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-inst-comments
; RUN: opt -passes=print-predicateinfo -disable-output < %s 2>&1 | FileCheck %s
define i1 @f(i32 %x, i1 %y) {
; CHECK-LABEL: @f(
; CHECK-NEXT:    br i1 [[Y:%.*]], label [[BB0:%.*]], label [[BB1:%.*]]
; CHECK:       bb0:
; CHECK-NEXT:    [[CMP:%.*]] = icmp sge i32 [[X:%.*]], 0
; CHECK-NEXT:  ; branch predicate info { TrueEdge: 1 Comparison: [[CMP]] = icmp sge i32 [[X]], 0 Edge: [label [[BB0]],label [[BB2:%.*]]], RenamedOp: [[X]] }
; CHECK-NEXT:    [[X_0:%.*]] = bitcast i32 [[X]] to i32
; CHECK-NEXT:    br i1 [[CMP]], label [[BB2]], label [[BB3:%.*]]
; CHECK:       bb1:
; CHECK-NEXT:    [[X2:%.*]] = add nuw nsw i32 [[X]], 1
; CHECK-NEXT:    [[CMP2:%.*]] = icmp sge i32 [[X2]], 2
; CHECK-NEXT:  ; branch predicate info { TrueEdge: 1 Comparison: [[CMP2]] = icmp sge i32 [[X2]], 2 Edge: [label [[BB1]],label [[BB2]]], RenamedOp: [[X2]] }
; CHECK-NEXT:    [[X2_0:%.*]] = bitcast i32 [[X2]] to i32
; CHECK-NEXT:    br i1 [[CMP2]], label [[BB2]], label [[BB3]]
; CHECK:       bb2:
; CHECK-NEXT:    [[X3:%.*]] = phi i32 [ [[X_0]], [[BB0]] ], [ [[X2_0]], [[BB1]] ]
; CHECK-NEXT:    br label [[BB3]]
; CHECK:       bb3:
; CHECK-NEXT:    ret i1 false
;
  br i1 %y, label %bb0, label %bb1
  bb0:
  %cmp = icmp sge i32 %x, 0  ; x > 0
  br i1 %cmp, label %bb2, label %bb3
  bb1:
  %x2 = add nsw nuw i32 %x, 1
  %cmp2 = icmp sge i32 %x2, 2     ; x+1 > 2 / x > 1
  br i1 %cmp2, label %bb2, label %bb3
  bb2:
  %x3 = phi i32 [ %x, %bb0 ], [ %x2, %bb1 ]
  br label %bb3
  bb3:
  ret i1 0
}

define i1 @g(i32 %x, i1 %y) {
; CHECK-LABEL: @g(
; CHECK-NEXT:    br i1 [[Y:%.*]], label [[BB0:%.*]], label [[BB1:%.*]]
; CHECK:       bb0:
; CHECK-NEXT:    [[CMP:%.*]] = icmp sge i32 [[X:%.*]], 0
; CHECK-NEXT:  ; branch predicate info { TrueEdge: 0 Comparison: [[CMP]] = icmp sge i32 [[X]], 0 Edge: [label [[BB0]],label [[BB2:%.*]]], RenamedOp: [[X]] }
; CHECK-NEXT:    [[X_0:%.*]] = bitcast i32 [[X]] to i32
; CHECK-NEXT:    br i1 [[CMP]], label [[BB3:%.*]], label [[BB2]]
; CHECK:       bb1:
; CHECK-NEXT:    [[X2:%.*]] = add nuw nsw i32 [[X]], 1
; CHECK-NEXT:    [[CMP2:%.*]] = icmp sge i32 [[X2]], 2
; CHECK-NEXT:  ; branch predicate info { TrueEdge: 0 Comparison: [[CMP2]] = icmp sge i32 [[X2]], 2 Edge: [label [[BB1]],label [[BB2]]], RenamedOp: [[X2]] }
; CHECK-NEXT:    [[X2_0:%.*]] = bitcast i32 [[X2]] to i32
; CHECK-NEXT:    br i1 [[CMP2]], label [[BB3]], label [[BB2]]
; CHECK:       bb2:
; CHECK-NEXT:    [[X3:%.*]] = phi i32 [ [[X_0]], [[BB0]] ], [ [[X2_0]], [[BB1]] ]
; CHECK-NEXT:    br label [[BB3]]
; CHECK:       bb3:
; CHECK-NEXT:    ret i1 false
;
  br i1 %y, label %bb0, label %bb1
  bb0:
  %cmp = icmp sge i32 %x, 0  ; x > 0
  br i1 %cmp, label %bb3, label %bb2
  bb1:
  %x2 = add nsw nuw i32 %x, 1
  %cmp2 = icmp sge i32 %x2, 2     ; x+1 > 2 / x > 1
  br i1 %cmp2, label %bb3, label %bb2
  bb2:
  %x3 = phi i32 [ %x, %bb0 ], [ %x2, %bb1 ]
  br label %bb3
  bb3:
  ret i1 0
}