test/Transforms/GVN/nontemporal.ll

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

; Check that !nontemporal metadata is preserved only if both original
; instructions are marked.
define i64 @one_nontemporal(ptr %p) {
; CHECK-LABEL: @one_nontemporal(
; CHECK-NEXT:    [[A:%.*]] = load i64, ptr [[P:%.*]], align 4
; CHECK-NEXT:    [[C:%.*]] = add i64 [[A]], [[A]]
; CHECK-NEXT:    ret i64 [[C]]
;
  %a = load i64, ptr %p
  %b = load i64, ptr %p, !nontemporal !0
  %c = add i64 %a, %b
  ret i64 %c
}

define i64 @both_nontemporal(ptr %p) {
; CHECK-LABEL: @both_nontemporal(
; CHECK-NEXT:    [[A:%.*]] = load i64, ptr [[P:%.*]], align 4, !nontemporal !0
; CHECK-NEXT:    [[C:%.*]] = add i64 [[A]], [[A]]
; CHECK-NEXT:    ret i64 [[C]]
;
  %a = load i64, ptr %p, !nontemporal !0
  %b = load i64, ptr %p, !nontemporal !0
  %c = add i64 %a, %b
  ret i64 %c
}

!0 = !{i32 1}