llvm-6502/test/Transforms/GlobalOpt/2009-02-15-ResolveAlias.ll

; RUN: opt < %s -globalopt -S | FileCheck %s

define internal void @f() {
; CHECK-NOT: @f(
; CHECK: define void @a
	ret void
}

@a = alias void ()* @f

define void @g() {
	call void()* @a()
	ret void
}

@b = alias internal void ()* @g
; CHECK-NOT: @b

define void @h() {
	call void()* @b()
; CHECK: call void @g
	ret void
}
Teach GlobalOpt to delete aliases with internal linkage (after forwarding any uses). GlobalDCE can also do this, but is only run at -O3. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90850 91177308-0d34-0410-b5e6-96231b3b80d8 2009-12-08 10:10:20 +00:00			`; RUN: opt < %s -globalopt -S \| FileCheck %s`
If the target of an alias has internal linkage, then the alias can be morphed into the target. Implement this transform, and fix a crash in the existing transform at the same time. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64583 91177308-0d34-0410-b5e6-96231b3b80d8 2009-02-15 09:56:08 +00:00
			`define internal void @f() {`
Fixup to r186268 and r186269: don't append -LABEL to CHECK-NOT. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186271 91177308-0d34-0410-b5e6-96231b3b80d8 2013-07-14 02:10:57 +00:00			`; CHECK-NOT: @f(`
Teach GlobalOpt to delete aliases with internal linkage (after forwarding any uses). GlobalDCE can also do this, but is only run at -O3. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90850 91177308-0d34-0410-b5e6-96231b3b80d8 2009-12-08 10:10:20 +00:00			`; CHECK: define void @a`
If the target of an alias has internal linkage, then the alias can be morphed into the target. Implement this transform, and fix a crash in the existing transform at the same time. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64583 91177308-0d34-0410-b5e6-96231b3b80d8 2009-02-15 09:56:08 +00:00			`ret void`
			`}`

			`@a = alias void ()* @f`

			`define void @g() {`
			`call void()* @a()`
			`ret void`
			`}`
Teach GlobalOpt to delete aliases with internal linkage (after forwarding any uses). GlobalDCE can also do this, but is only run at -O3. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90850 91177308-0d34-0410-b5e6-96231b3b80d8 2009-12-08 10:10:20 +00:00
			`@b = alias internal void ()* @g`
			`; CHECK-NOT: @b`

			`define void @h() {`
			`call void()* @b()`
			`; CHECK: call void @g`
			`ret void`
			`}`