Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Transforms/GlobalOpt/externally-initialized-aggregate.ll

@@ -1,50 +0,0 @@
-; RUN: opt < %s -S -globalopt | FileCheck %s
-
-; This global is externally_initialized, so if we split it into scalars we
-; should keep that flag set on all of the new globals. This will prevent the
-; store to @a[0] from being constant propagated to the load in @foo, but will not
-; prevent @a[1] from being removed since it is dead.
-; CHECK: @a.0 = internal unnamed_addr externally_initialized global i32 undef
-; CHECK-NOT: @a.1
-@a = internal externally_initialized global [2 x i32] undef, align 4
-; This is the same, but a struct rather than an array.
-; CHECK: @b.0 = internal unnamed_addr externally_initialized global i32 undef
-; CHECK-NOT: @b.1
-@b = internal externally_initialized global {i32, i32} undef, align 4
-
-define i32 @foo() {
-; CHECK-LABEL: define i32 @foo
-entry:
-; This load uses the split global, but cannot be constant-propagated away.
-; CHECK: %0 = load i32, i32* @a.0
-  %0 = load i32, i32* getelementptr inbounds ([2 x i32], [2 x i32]* @a, i32 0, i32 0), align 4
-  ret i32 %0
-}
-
-define i32 @bar() {
-; CHECK-LABEL: define i32 @bar
-entry:
-; This load uses the split global, but cannot be constant-propagated away.
-; CHECK: %0 = load i32, i32* @b.0
-  %0 = load i32, i32* getelementptr inbounds ({i32, i32}, {i32, i32}* @b, i32 0, i32 0), align 4
-  ret i32 %0
-}
-
-define void @init() {
-; CHECK-LABEL: define void @init
-entry:
-; This store uses the split global, but cannot be constant-propagated away.
-; CHECK: store i32 1, i32* @a.0
-  store i32 1, i32* getelementptr inbounds ([2 x i32], [2 x i32]* @a, i32 0, i32 0), align 4
-; This store can be removed, because the second element of @a is never read.
-; CHECK-NOT: store i32 2, i32* @a.1
-  store i32 2, i32* getelementptr inbounds ([2 x i32], [2 x i32]* @a, i32 0, i32 1), align 4
-
-; This store uses the split global, but cannot be constant-propagated away.
-; CHECK: store i32 3, i32* @b.0
-  store i32 3, i32* getelementptr inbounds ({i32, i32}, {i32, i32}* @b, i32 0, i32 0), align 4
-; This store can be removed, because the second element of @b is never read.
-; CHECK-NOT: store i32 4, i32* @b.1
-  store i32 4, i32* getelementptr inbounds ({i32, i32}, {i32, i32}* @b, i32 0, i32 1), align 4
-  ret void
-}