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; Check the optimizer doesn't crash at inlining the function top and all of its callees are inlined.
; RUN: opt < %s -O3 -S | FileCheck %s
; RUN: opt < %s -O3 -inline-enable-priority-order=true -S | FileCheck %s
define dso_local void (...)* @second(i8** %p) {
entry:
%p.addr = alloca i8**, align 8
store i8** %p, i8*** %p.addr, align 8
%tmp = load i8**, i8*** %p.addr, align 8
%tmp1 = load i8*, i8** %tmp, align 8
%tmp2 = bitcast i8* %tmp1 to void (...)*
ret void (...)* %tmp2
}
define dso_local void @top() {
entry:
; CHECK: {{.*}} = {{.*}} call {{.*}} @ext
; CHECK-NOT: {{.*}} = {{.*}} call {{.*}} @third
; CHECK-NOT: {{.*}} = {{.*}} call {{.*}} @second
; CHECK-NOT: {{.*}} = {{.*}} call {{.*}} @wrapper
%q = alloca i8*, align 8
store i8* bitcast (void ()* @third to i8*), i8** %q, align 8
%tmp = call void (...)* @second(i8** %q)
; The call to 'wrapper' here is to ensure that its function attributes
; i.e., returning its parameter and having no side effect, will be decuded
; before the next round of inlining happens to 'top' to expose the bug.
%call = call void (...)* @wrapper(void (...)* %tmp)
; The indirect call here is to confuse the alias analyzer so that
; an incomplete graph will be built during the first round of inlining.
; This allows the current function to be processed before the actual
; callee, i.e., the function 'run', is processed. Once it's simplified to
; a direct call, it also enables an additional round of inlining with all
; function attributes deduced.
call void (...) %call()
ret void
}
define dso_local void (...)* @gen() {
entry:
%call = call void (...)* (...) @ext()
ret void (...)* %call
}
declare dso_local void (...)* @ext(...)
define dso_local void (...)* @wrapper(void (...)* %fn) {
entry:
ret void (...)* %fn
}
define dso_local void @run(void (...)* %fn) {
entry:
%fn.addr = alloca void (...)*, align 8
%f = alloca void (...)*, align 8
store void (...)* %fn, void (...)** %fn.addr, align 8
%tmp = load void (...)*, void (...)** %fn.addr, align 8
%call = call void (...)* @wrapper(void (...)* %tmp)
store void (...)* %call, void (...)** %f, align 8
%tmp1 = load void (...)*, void (...)** %f, align 8
call void (...) %tmp1()
ret void
}
define dso_local void @third() {
entry:
%f = alloca void (...)*, align 8
%call = call void (...)* @gen()
store void (...)* %call, void (...)** %f, align 8
%tmp = load void (...)*, void (...)** %f, align 8
call void @run(void (...)* %tmp)
ret void
}
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