llvm-project/llvm/test/Transforms/MergeFunc/tailcall.ll

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; RUN: opt -mergefunc -S < %s | FileCheck %s
declare void @dummy()
; CHECK-LABEL: define{{.*}}@foo
; CHECK: call {{.*}}@dummy
; CHECK: musttail {{.*}}@dummy
define void @foo() {
call void @dummy()
musttail call void @dummy()
ret void
}
; CHECK-LABEL: define{{.*}}@bar
; CHECK: call {{.*}}@dummy
; CHECK: call {{.*}}@dummy
define void @bar() {
call void @dummy()
call void @dummy()
ret void
}