forked from OSchip/llvm-project
33 lines
716 B
LLVM
33 lines
716 B
LLVM
; RUN: opt < %s -simplifycfg -hoist-common-insts=true -S | FileCheck %s
|
|
|
|
declare void @bar(i32*)
|
|
declare void @baz(i32*)
|
|
|
|
; CHECK-LABEL: @test_load_combine_metadata(
|
|
; Check that dereferenceable_or_null metadata is combined
|
|
; CHECK: load i32*, i32** %p
|
|
; CHECK-SAME: !dereferenceable_or_null ![[DEREF:[0-9]+]]
|
|
; CHECK: t:
|
|
; CHECK: f:
|
|
define void @test_load_combine_metadata(i1 %c, i32** %p) {
|
|
br i1 %c, label %t, label %f
|
|
|
|
t:
|
|
%v1 = load i32*, i32** %p, !dereferenceable_or_null !0
|
|
call void @bar(i32* %v1)
|
|
br label %cont
|
|
|
|
f:
|
|
%v2 = load i32*, i32** %p, !dereferenceable_or_null !1
|
|
call void @baz(i32* %v2)
|
|
br label %cont
|
|
|
|
cont:
|
|
ret void
|
|
}
|
|
|
|
; CHECK: ![[DEREF]] = !{i64 8}
|
|
|
|
!0 = !{i64 8}
|
|
!1 = !{i64 16}
|