llvm/test/CodeGen/X86/constant-hoisting-cmp.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
; RUN: llc < %s -O3 -mtriple=x86_64-- |FileCheck %s

; If constant 4294967295 is hoisted to a variable, then we won't be able to
; use a shift right by 32 to optimize the compare.
define i64 @foo(i64 %data1, i64 %data2, i64 %data3) {
; CHECK-LABEL: foo:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    movq %rdx, %rax
; CHECK-NEXT:    shrq $32, %rdi
; CHECK-NEXT:    je .LBB0_2
; CHECK-NEXT:  # %bb.1:
; CHECK-NEXT:    incq %rax
; CHECK-NEXT:    retq
; CHECK-NEXT:  .LBB0_2: # %L_val2
; CHECK-NEXT:    shrq $32, %rsi
; CHECK-NEXT:    je .LBB0_4
; CHECK-NEXT:  # %bb.3:
; CHECK-NEXT:    addq $2, %rax
; CHECK-NEXT:    retq
; CHECK-NEXT:  .LBB0_4: # %L_val3
; CHECK-NEXT:    addq $3, %rax
; CHECK-NEXT:    retq
entry:
  %val1 = add i64 %data3, 1
  %x = icmp ugt i64 %data1, 4294967295
  br i1 %x, label %End, label %L_val2

L_val2:
  %val2 = add i64 %data3, 2
  %y = icmp ugt i64 %data2, 4294967295
  br i1 %y, label %End, label %L_val3

L_val3:
  %val3 = add i64 %data3, 3
  br label %End

End:
  %p1 = phi i64 [%val1,%entry], [%val2,%L_val2], [%val3,%L_val3]
  ret i64 %p1
}