llvm/test/Transforms/PhaseOrdering/phi-protected-field-ptr.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -O2 -S < %s | FileCheck %s

; Test that no optimization run at -O2 moves the loads into the exit block,
; as this causes unnecessary address escapes with pointer field protection.

define ptr @phi_prot_ptr(i1 %sel, ptr %p1, ptr %p2) {
; CHECK-LABEL: define ptr @phi_prot_ptr(
; CHECK-SAME: i1 [[SEL:%.*]], ptr readonly [[P1:%.*]], ptr readonly [[P2:%.*]]) local_unnamed_addr #[[ATTR0:[0-9]+]] {
; CHECK-NEXT:    br i1 [[SEL]], label %[[T:.*]], label %[[F:.*]]
; CHECK:       [[T]]:
; CHECK-NEXT:    [[PROTP1:%.*]] = tail call ptr @llvm.protected.field.ptr.p0(ptr [[P1]], i64 1, i1 true)
; CHECK-NEXT:    [[LOAD1:%.*]] = load ptr, ptr [[PROTP1]], align 8
; CHECK-NEXT:    br label %[[EXIT:.*]]
; CHECK:       [[F]]:
; CHECK-NEXT:    [[PROTP2:%.*]] = tail call ptr @llvm.protected.field.ptr.p0(ptr [[P2]], i64 2, i1 true)
; CHECK-NEXT:    [[LOAD2:%.*]] = load ptr, ptr [[PROTP2]], align 8
; CHECK-NEXT:    br label %[[EXIT]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    [[RETVAL:%.*]] = phi ptr [ [[LOAD1]], %[[T]] ], [ [[LOAD2]], %[[F]] ]
; CHECK-NEXT:    ret ptr [[RETVAL]]
;
  br i1 %sel, label %t, label %f

t:
  %protp1 = call ptr @llvm.protected.field.ptr.p0(ptr %p1, i64 1, i1 true)
  %load1 = load ptr, ptr %protp1
  br label %exit

f:
  %protp2 = call ptr @llvm.protected.field.ptr.p0(ptr %p2, i64 2, i1 true)
  %load2 = load ptr, ptr %protp2
  br label %exit

exit:
  %retval = phi ptr [ %load1, %t ], [ %load2, %f ]
  ret ptr %retval
}