xref: /llvm-project/llvm/test/Transforms/ConstraintElimination/pr105785.ll (revision 7fb97bee9269f0d4239908ac8def70be696991c6)

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s

define void @pr105785(ptr %p) {
; CHECK-LABEL: define void @pr105785(
; CHECK-SAME: ptr [[P:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[FOR_COND:.*]]
; CHECK:       [[FOR_COND]]:
; CHECK-NEXT:    [[FOR_IND:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ 1, %[[FOR_COND1:.*]] ]
; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[FOR_IND]], 0
; CHECK-NEXT:    br i1 [[CMP]], label %[[FOR_COND1]], label %[[FOR_END6:.*]]
; CHECK:       [[FOR_COND1]]:
; CHECK-NEXT:    [[FOR_IND2:%.*]] = phi i32 [ [[INC:%.*]], %[[FOR_BODY3:.*]] ], [ 0, %[[FOR_COND]] ]
; CHECK-NEXT:    [[CMP2:%.*]] = icmp ult i32 [[FOR_IND2]], 3
; CHECK-NEXT:    br i1 [[CMP2]], label %[[FOR_BODY3]], label %[[FOR_COND]]
; CHECK:       [[FOR_BODY3]]:
; CHECK-NEXT:    store i32 -1, ptr [[P]], align 4
; CHECK-NEXT:    [[INC]] = add nuw nsw i32 [[FOR_IND2]], 1
; CHECK-NEXT:    br label %[[FOR_COND1]]
; CHECK:       [[FOR_END6]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %for.cond

for.cond:                                         ; preds = %for.cond1, %entry
  %for.ind = phi i32 [ 0, %entry ], [ 1, %for.cond1 ]
  %cmp = icmp eq i32 %for.ind, 0
  br i1 %cmp, label %for.cond1, label %for.end6

for.cond1:                                        ; preds = %for.cond, %for.body3
  %for.ind2 = phi i32 [ %inc, %for.body3 ], [ 0, %for.cond ]
  %cmp2 = icmp ult i32 %for.ind2, 3
  br i1 %cmp2, label %for.body3, label %for.cond

for.body3:                                        ; preds = %for.cond1
  %scmp = call i32 @llvm.scmp.i32.i32(i32 %for.ind, i32 1)
  store i32 %scmp, ptr %p, align 4
  %inc = add nuw nsw i32 %for.ind2, 1
  br label %for.cond1

for.end6:
  ret void
}