llvm-mirror/test/Transforms/InstCombine/2008-08-05-And.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instcombine -S | FileCheck %s
; PR2629

define void @f(i8* %x) nounwind  {
; CHECK-LABEL: @f(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br label [[BB:%.*]]
; CHECK:       bb:
; CHECK-NEXT:    [[L1:%.*]] = load i8, i8* [[X:%.*]], align 1
; CHECK-NEXT:    [[S1:%.*]] = add i8 [[L1]], -6
; CHECK-NEXT:    [[C1:%.*]] = icmp ugt i8 [[S1]], 2
; CHECK-NEXT:    [[S2:%.*]] = add i8 [[L1]], -10
; CHECK-NEXT:    [[C2:%.*]] = icmp ugt i8 [[S2]], 2
; CHECK-NEXT:    [[A1:%.*]] = and i1 [[C1]], [[C2]]
; CHECK-NEXT:    br i1 [[A1]], label [[INCOMPATIBLE:%.*]], label [[OKAY:%.*]]
; CHECK:       okay:
; CHECK-NEXT:    ret void
; CHECK:       incompatible:
; CHECK-NEXT:    ret void
;
entry:
  br label %bb

bb:
  %g1 = getelementptr i8, i8* %x, i32 0
  %l1 = load i8, i8* %g1, align 1
  %s1 = sub i8 %l1, 6
  %c1 = icmp ugt i8 %s1, 2
  %s2 = sub i8 %l1, 10
  %c2 = icmp ugt i8 %s2, 2
  %a1 = and i1 %c1, %c2
  br i1 %a1, label %incompatible, label %okay

okay:
  ret void

incompatible:
  ret void
}

define void @f_logical(i8* %x) nounwind  {
; CHECK-LABEL: @f_logical(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br label [[BB:%.*]]
; CHECK:       bb:
; CHECK-NEXT:    [[L1:%.*]] = load i8, i8* [[X:%.*]], align 1
; CHECK-NEXT:    [[S1:%.*]] = add i8 [[L1]], -6
; CHECK-NEXT:    [[C1:%.*]] = icmp ugt i8 [[S1]], 2
; CHECK-NEXT:    [[S2:%.*]] = add i8 [[L1]], -10
; CHECK-NEXT:    [[C2:%.*]] = icmp ugt i8 [[S2]], 2
; CHECK-NEXT:    [[A1:%.*]] = and i1 [[C1]], [[C2]]
; CHECK-NEXT:    br i1 [[A1]], label [[INCOMPATIBLE:%.*]], label [[OKAY:%.*]]
; CHECK:       okay:
; CHECK-NEXT:    ret void
; CHECK:       incompatible:
; CHECK-NEXT:    ret void
;
entry:
  br label %bb

bb:
  %g1 = getelementptr i8, i8* %x, i32 0
  %l1 = load i8, i8* %g1, align 1
  %s1 = sub i8 %l1, 6
  %c1 = icmp ugt i8 %s1, 2
  %s2 = sub i8 %l1, 10
  %c2 = icmp ugt i8 %s2, 2
  %a1 = select i1 %c1, i1 %c2, i1 false
  br i1 %a1, label %incompatible, label %okay

okay:
  ret void

incompatible:
  ret void
}