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; RUN: opt -S -passes=ipsccp < %s | FileCheck %s
@g = external global i8
define internal noundef i32 @ret_noundef() {
; CHECK-LABEL: define internal i32 @ret_noundef() {
; CHECK-NEXT: ret i32 undef
;
ret i32 0
}
define internal dereferenceable(1) ptr @ret_dereferenceable() {
; CHECK-LABEL: define internal ptr @ret_dereferenceable() {
; CHECK-NEXT: ret ptr undef
;
ret ptr @g
}
define internal dereferenceable_or_null(1) ptr @ret_dereferenceable_or_null() {
; CHECK-LABEL: define internal ptr @ret_dereferenceable_or_null() {
; CHECK-NEXT: ret ptr undef
;
ret ptr @g
}
; Non-null is fine, because it does not cause immediate UB.
define internal nonnull ptr @ret_nonnull() {
; CHECK-LABEL: define internal nonnull ptr @ret_nonnull() {
; CHECK-NEXT: ret ptr undef
;
ret ptr @g
}
define internal nonnull ptr @ret_nonnull_noundef() {
; CHECK-LABEL: define internal nonnull ptr @ret_nonnull_noundef() {
; CHECK-NEXT: ret ptr undef
;
ret ptr @g
}
define void @test() {
; CHECK-LABEL: define void @test() {
; CHECK-NEXT: [[TMP1:%.*]] = call i32 @ret_noundef()
; CHECK-NEXT: [[TMP2:%.*]] = call ptr @ret_dereferenceable()
; CHECK-NEXT: [[TMP3:%.*]] = call ptr @ret_dereferenceable_or_null()
; CHECK-NEXT: [[TMP4:%.*]] = call nonnull ptr @ret_nonnull()
; CHECK-NEXT: [[TMP5:%.*]] = call nonnull ptr @ret_nonnull_noundef()
; CHECK-NEXT: ret void
;
call noundef i32 @ret_noundef()
call dereferenceable(1) ptr @ret_dereferenceable()
call dereferenceable_or_null(1) ptr @ret_dereferenceable_or_null()
call nonnull ptr @ret_nonnull()
call nonnull noundef ptr @ret_nonnull_noundef()
ret void
}
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