31 lines
652 B
LLVM
31 lines
652 B
LLVM
; RUN: opt %s -simplifycfg -S | FileCheck %s
|
|
|
|
; ConstantFoldTerminator function can convert SwitchInst with one case (and default) to
|
|
; a conditional BranchInst. This test checks the converted BranchInst preserve the
|
|
; make.implicit metadata.
|
|
|
|
declare i32 @consume(i32*)
|
|
declare void @trap()
|
|
|
|
define i32 @copy-metadata(i32* %x) {
|
|
|
|
entry:
|
|
%x.int = ptrtoint i32* %x to i64
|
|
|
|
; CHECK: br i1 %cond, label %is_null, label %default, !make.implicit !0
|
|
switch i64 %x.int, label %default [
|
|
i64 0, label %is_null
|
|
], !make.implicit !0
|
|
|
|
default:
|
|
%0 = call i32 @consume(i32* %x)
|
|
ret i32 %0
|
|
|
|
is_null:
|
|
call void @trap()
|
|
unreachable
|
|
}
|
|
|
|
!0 = !{}
|
|
|