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; RUN: opt < %s -passes=gvn-sink -S | FileCheck %s
; Check that nonnull metadata for non-dominating loads is not propagated.
; CHECK-LABEL: @test1(
; CHECK-LABEL: if.end:
; CHECK: %[[ptr:.*]] = phi ptr
; CHECK: %[[load:.*]] = load ptr, ptr %[[ptr]]
; CHECK-NOT: !nonnull
; CHECK: ret ptr %[[load]]
define ptr @test1(i1 zeroext %flag, ptr %p) {
entry:
br i1 %flag, label %if.then, label %if.else
if.then:
%a = load ptr, ptr %p
%aa = load ptr, ptr %a, !nonnull !0
br label %if.end
if.else:
%b = load ptr, ptr %p
%bb= load ptr, ptr %b
br label %if.end
if.end:
%c = phi ptr [ %aa, %if.then ], [ %bb, %if.else ]
ret ptr %c
}
; CHECK-LABEL: @test2(
; CHECK-LABEL: if.end:
; CHECK: %[[ptr:.*]] = phi ptr
; CHECK: %[[load:.*]] = load ptr, ptr %[[ptr]]
; CHECK-NOT: !nonnull
; CHECK: ret ptr %[[load]]
define ptr @test2(i1 zeroext %flag, ptr %p) {
entry:
br i1 %flag, label %if.then, label %if.else
if.then:
%a = load ptr, ptr %p
%aa = load ptr, ptr %a
br label %if.end
if.else:
%b = load ptr, ptr %p
%bb= load ptr, ptr %b, !nonnull !0
br label %if.end
if.end:
%c = phi ptr [ %aa, %if.then ], [ %bb, %if.else ]
ret ptr %c
}
; Check that nontemporal markings are propagated if both original stores are
; marked.
; CHECK-LABEL: @nontemporal(
; CHECK-LABEL: if.end:
; CHECK: !nontemporal
; CHECK: ret void
define void @nontemporal(i1 zeroext %flag, ptr %p) {
entry:
br i1 %flag, label %if.then, label %if.else
if.then:
%a = load ptr, ptr %p
store ptr %p, ptr %a, align 8, !nontemporal !1
br label %if.end
if.else:
%b = load ptr, ptr %p
store ptr %p, ptr %b, align 8, !nontemporal !1
br label %if.end
if.end:
ret void
}
; CHECK-LABEL: @nontemporal_mismatch(
; CHECK-NOT: !nontemporal
define void @nontemporal_mismatch(i1 zeroext %flag, ptr %p) {
entry:
br i1 %flag, label %if.then, label %if.else
if.then:
%a = load ptr, ptr %p
store ptr %p, ptr %a, align 8
br label %if.end
if.else:
%b = load ptr, ptr %p
store ptr %p, ptr %b, align 8, !nontemporal !1
br label %if.end
if.end:
ret void
}
!0 = !{}
!1 = !{i32 1}
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