bolt/deps/llvm-18.1.8/llvm/test/Transforms/LICM/speculate-div.ll

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

declare void @maythrow()
declare void @use(i16)

define void @sdiv_not_ok(i16 %n, i16 %xx) {
; CHECK-LABEL: @sdiv_not_ok(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[X:%.*]] = or i16 [[XX:%.*]], 1
; CHECK-NEXT:    br label [[LOOP:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    call void @maythrow()
; CHECK-NEXT:    [[DIV:%.*]] = sdiv i16 [[N:%.*]], [[X]]
; CHECK-NEXT:    call void @use(i16 [[DIV]])
; CHECK-NEXT:    br label [[LOOP]]
;
entry:
  %x = or i16 %xx, 1
  br label %loop
loop:
  call void @maythrow()
  %div = sdiv i16 %n, %x
  call void @use(i16 %div)
  br label %loop
}

define void @srem_not_ok2(i16 %nn, i16 %x) {
; CHECK-LABEL: @srem_not_ok2(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[N:%.*]] = and i16 [[NN:%.*]], 1323
; CHECK-NEXT:    br label [[LOOP:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    call void @maythrow()
; CHECK-NEXT:    [[DIV:%.*]] = srem i16 [[N]], [[X:%.*]]
; CHECK-NEXT:    call void @use(i16 [[DIV]])
; CHECK-NEXT:    br label [[LOOP]]
;
entry:
  %n = and i16 %nn, 1323
  br label %loop
loop:
  call void @maythrow()
  %div = srem i16 %n, %x
  call void @use(i16 %div)
  br label %loop
}

define void @sdiv_ok(i16 %n, i16 %xx) {
; CHECK-LABEL: @sdiv_ok(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[XO:%.*]] = or i16 [[XX:%.*]], 1
; CHECK-NEXT:    [[X:%.*]] = and i16 [[XO]], 123
; CHECK-NEXT:    br label [[LOOP:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    call void @maythrow()
; CHECK-NEXT:    [[DIV:%.*]] = sdiv i16 [[N:%.*]], [[X]]
; CHECK-NEXT:    call void @use(i16 [[DIV]])
; CHECK-NEXT:    br label [[LOOP]]
;
entry:
  %xo = or i16 %xx, 1
  %x = and i16 %xo, 123
  br label %loop
loop:
  call void @maythrow()
  %div = sdiv i16 %n, %x
  call void @use(i16 %div)
  br label %loop
}

define void @srem_ok2(i16 %nn, i16 %xx) {
; CHECK-LABEL: @srem_ok2(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[N:%.*]] = and i16 [[NN:%.*]], 123
; CHECK-NEXT:    [[X:%.*]] = or i16 [[XX:%.*]], 1
; CHECK-NEXT:    br label [[LOOP:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    call void @maythrow()
; CHECK-NEXT:    [[DIV:%.*]] = srem i16 [[N]], [[X]]
; CHECK-NEXT:    call void @use(i16 [[DIV]])
; CHECK-NEXT:    br label [[LOOP]]
;
entry:
  %n = and i16 %nn, 123
  %x = or i16 %xx, 1
  br label %loop
loop:
  call void @maythrow()
  %div = srem i16 %n, %x
  call void @use(i16 %div)
  br label %loop
}

define void @udiv_not_ok(i16 %n, i16 %xx) {
; CHECK-LABEL: @udiv_not_ok(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[X:%.*]] = xor i16 [[XX:%.*]], 1
; CHECK-NEXT:    br label [[LOOP:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    call void @maythrow()
; CHECK-NEXT:    [[DIV:%.*]] = udiv i16 [[N:%.*]], [[X]]
; CHECK-NEXT:    call void @use(i16 [[DIV]])
; CHECK-NEXT:    br label [[LOOP]]
;
entry:
  %x = xor i16 %xx, 1
  br label %loop
loop:
  call void @maythrow()
  %div = udiv i16 %n, %x
  call void @use(i16 %div)
  br label %loop
}

define void @udiv_ok(i16 %n, i16 %xx) {
; CHECK-LABEL: @udiv_ok(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[X:%.*]] = or i16 [[XX:%.*]], 1
; CHECK-NEXT:    br label [[LOOP:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    call void @maythrow()
; CHECK-NEXT:    [[DIV:%.*]] = udiv i16 [[N:%.*]], [[X]]
; CHECK-NEXT:    call void @use(i16 [[DIV]])
; CHECK-NEXT:    br label [[LOOP]]
;
entry:
  %x = or i16 %xx, 1
  br label %loop
loop:
  call void @maythrow()
  %div = udiv i16 %n, %x
  call void @use(i16 %div)
  br label %loop
}