test/Transforms/InstCombine/merge-icmp.ll

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

define i1 @test1(i16* %x) {
; CHECK-LABEL: @test1(
; CHECK-NEXT:    [[LOAD:%.*]] = load i16, i16* [[X:%.*]], align 4
; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq i16 [[LOAD]], 17791
; CHECK-NEXT:    ret i1 [[TMP1]]
;
  %load = load i16, i16* %x, align 4
  %trunc = trunc i16 %load to i8
  %cmp1 = icmp eq i8 %trunc, 127
  %and = and i16 %load, -256
  %cmp2 = icmp eq i16 %and, 17664
  %or = and i1 %cmp1, %cmp2
  ret i1 %or
}

define i1 @test1_logical(i16* %x) {
; CHECK-LABEL: @test1_logical(
; CHECK-NEXT:    [[LOAD:%.*]] = load i16, i16* [[X:%.*]], align 4
; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq i16 [[LOAD]], 17791
; CHECK-NEXT:    ret i1 [[TMP1]]
;
  %load = load i16, i16* %x, align 4
  %trunc = trunc i16 %load to i8
  %cmp1 = icmp eq i8 %trunc, 127
  %and = and i16 %load, -256
  %cmp2 = icmp eq i16 %and, 17664
  %or = select i1 %cmp1, i1 %cmp2, i1 false
  ret i1 %or
}

define i1 @test2(i16* %x) {
; CHECK-LABEL: @test2(
; CHECK-NEXT:    [[LOAD:%.*]] = load i16, i16* [[X:%.*]], align 4
; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq i16 [[LOAD]], 32581
; CHECK-NEXT:    ret i1 [[TMP1]]
;
  %load = load i16, i16* %x, align 4
  %and = and i16 %load, -256
  %cmp1 = icmp eq i16 %and, 32512
  %trunc = trunc i16 %load to i8
  %cmp2 = icmp eq i8 %trunc, 69
  %or = and i1 %cmp1, %cmp2
  ret i1 %or
}

define i1 @test2_logical(i16* %x) {
; CHECK-LABEL: @test2_logical(
; CHECK-NEXT:    [[LOAD:%.*]] = load i16, i16* [[X:%.*]], align 4
; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq i16 [[LOAD]], 32581
; CHECK-NEXT:    ret i1 [[TMP1]]
;
  %load = load i16, i16* %x, align 4
  %and = and i16 %load, -256
  %cmp1 = icmp eq i16 %and, 32512
  %trunc = trunc i16 %load to i8
  %cmp2 = icmp eq i8 %trunc, 69
  %or = select i1 %cmp1, i1 %cmp2, i1 false
  ret i1 %or
}