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; Tests that the coro.destroy and coro.resume are devirtualized where possible,
; SCC pipeline restarts and inlines the direct calls.
; RUN: opt < %s -S -inline -coro-elide -dce | FileCheck %s
declare void @print(i32) nounwind
; resume part of the coroutine
define fastcc void @f.resume(i8*) {
tail call void @print(i32 0)
ret void
}
; destroy part of the coroutine
define fastcc void @f.destroy(i8*) {
tail call void @print(i32 1)
ret void
}
@f.resumers = internal constant [2 x void (i8*)*] [void (i8*)* @f.resume,
void (i8*)* @f.destroy]
; a coroutine start function
define i8* @f() {
entry:
%id = call token @llvm.coro.id(i32 0, i8* null,
i8* bitcast (i8*()* @f to i8*),
i8* bitcast ([2 x void (i8*)*]* @f.resumers to i8*))
%hdl = call i8* @llvm.coro.begin(token %id, i8* null)
ret i8* %hdl
}
; CHECK-LABEL: @callResume(
define void @callResume() {
entry:
%hdl = call i8* @f()
; CHECK: call void @print(i32 0)
%0 = call i8* @llvm.coro.subfn.addr(i8* %hdl, i8 0)
%1 = bitcast i8* %0 to void (i8*)*
call fastcc void %1(i8* %hdl)
; CHECK-NEXT: call void @print(i32 1)
%2 = call i8* @llvm.coro.subfn.addr(i8* %hdl, i8 1)
%3 = bitcast i8* %2 to void (i8*)*
call fastcc void %3(i8* %hdl)
; CHECK-NEXT: ret void
ret void
}
; CHECK-LABEL: @eh(
define void @eh() personality i8* null {
entry:
%hdl = call i8* @f()
; CHECK: call void @print(i32 0)
%0 = call i8* @llvm.coro.subfn.addr(i8* %hdl, i8 0)
%1 = bitcast i8* %0 to void (i8*)*
invoke void %1(i8* %hdl)
to label %cont unwind label %ehcleanup
cont:
ret void
ehcleanup:
%tok = cleanuppad within none []
cleanupret from %tok unwind to caller
}
; CHECK-LABEL: @no_devirt_info_null(
; no devirtualization here, since coro.begin info parameter is null
define void @no_devirt_info_null() {
entry:
%id = call token @llvm.coro.id(i32 0, i8* null, i8* null, i8* null)
%hdl = call i8* @llvm.coro.begin(token %id, i8* null)
; CHECK: call i8* @llvm.coro.subfn.addr(i8* %hdl, i8 0)
%0 = call i8* @llvm.coro.subfn.addr(i8* %hdl, i8 0)
%1 = bitcast i8* %0 to void (i8*)*
call fastcc void %1(i8* %hdl)
; CHECK: call i8* @llvm.coro.subfn.addr(i8* %hdl, i8 1)
%2 = call i8* @llvm.coro.subfn.addr(i8* %hdl, i8 1)
%3 = bitcast i8* %2 to void (i8*)*
call fastcc void %3(i8* %hdl)
; CHECK: ret void
ret void
}
; CHECK-LABEL: @no_devirt_no_begin(
; no devirtualization here, since coro.begin is not visible
define void @no_devirt_no_begin(i8* %hdl) {
entry:
; CHECK: call i8* @llvm.coro.subfn.addr(i8* %hdl, i8 0)
%0 = call i8* @llvm.coro.subfn.addr(i8* %hdl, i8 0)
%1 = bitcast i8* %0 to void (i8*)*
call fastcc void %1(i8* %hdl)
; CHECK: call i8* @llvm.coro.subfn.addr(i8* %hdl, i8 1)
%2 = call i8* @llvm.coro.subfn.addr(i8* %hdl, i8 1)
%3 = bitcast i8* %2 to void (i8*)*
call fastcc void %3(i8* %hdl)
; CHECK: ret void
ret void
}
declare token @llvm.coro.id(i32, i8*, i8*, i8*)
declare i8* @llvm.coro.begin(token, i8*)
declare i8* @llvm.coro.frame()
declare i8* @llvm.coro.subfn.addr(i8*, i8)
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