test/Transforms/InstSimplify/pr87042.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt < %s -passes=instsimplify -S | FileCheck %s

; %or2 cannot be folded into %or1 because %or1 has disjoint.
; TODO: Can we move the logic into InstCombine and drop the disjoint flag?
define i64 @test(i1 %cond, i64 %x) {
; CHECK-LABEL: define i64 @test(
; CHECK-SAME: i1 [[COND:%.*]], i64 [[X:%.*]]) {
; CHECK-NEXT:    [[OR1:%.*]] = or disjoint i64 [[X]], 7
; CHECK-NEXT:    [[SEL1:%.*]] = select i1 [[COND]], i64 [[OR1]], i64 [[X]]
; CHECK-NEXT:    [[OR2:%.*]] = or i64 [[SEL1]], 7
; CHECK-NEXT:    ret i64 [[OR2]]
;
  %or1 = or disjoint i64 %x, 7
  %sel1 = select i1 %cond, i64 %or1, i64 %x
  %or2 = or i64 %sel1, 7
  ret i64 %or2
}

define i64 @pr87042(i64 %x) {
; CHECK-LABEL: define i64 @pr87042(
; CHECK-SAME: i64 [[X:%.*]]) {
; CHECK-NEXT:    [[AND1:%.*]] = and i64 [[X]], 65535
; CHECK-NEXT:    [[CMP1:%.*]] = icmp eq i64 [[AND1]], 0
; CHECK-NEXT:    [[OR1:%.*]] = or disjoint i64 [[X]], 7
; CHECK-NEXT:    [[SEL1:%.*]] = select i1 [[CMP1]], i64 [[OR1]], i64 [[X]]
; CHECK-NEXT:    [[AND2:%.*]] = and i64 [[SEL1]], 16776960
; CHECK-NEXT:    [[CMP2:%.*]] = icmp eq i64 [[AND2]], 0
; CHECK-NEXT:    [[OR2:%.*]] = or i64 [[SEL1]], 7
; CHECK-NEXT:    [[SEL2:%.*]] = select i1 [[CMP2]], i64 [[OR2]], i64 [[SEL1]]
; CHECK-NEXT:    ret i64 [[SEL2]]
;
  %and1 = and i64 %x, 65535
  %cmp1 = icmp eq i64 %and1, 0
  %or1 = or disjoint i64 %x, 7
  %sel1 = select i1 %cmp1, i64 %or1, i64 %x
  %and2 = and i64 %sel1, 16776960
  %cmp2 = icmp eq i64 %and2, 0
  %or2 = or i64 %sel1, 7
  %sel2 = select i1 %cmp2, i64 %or2, i64 %sel1
  ret i64 %sel2
}