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; Check that a remat that inserts rematerialized instructions in the single predecessor block works
; as expected
; RUN: opt < %s -O0 -S | FileCheck %s
; CHECK: %f.Frame = type { i32 }
define { ptr, i32 } @f(ptr %buffer, i32 %n) {
entry:
%id = call token @llvm.coro.id.retcon(i32 8, i32 4, ptr %buffer, ptr @f_prototype, ptr @allocate, ptr @deallocate)
%hdl = call ptr @llvm.coro.begin(token %id, ptr null)
br label %loop
loop:
%n.val = phi i32 [ %n, %entry ], [ %inc, %resume1 ]
call void @print(i32 %n.val)
%inc1 = add i32 %n.val, 1
%inc2 = add i32 %inc1, 2
%inc3 = add i32 %inc2, 3
%inc4 = add i32 %inc3, 4
%inc5 = add i32 %inc4, 5
%inc6 = add i32 %inc5, 6
%unwind0 = call i1 (...) @llvm.coro.suspend.retcon.i1(i32 %inc6)
br i1 %unwind0, label %cleanup, label %resume
resume:
%unwind1 = call i1 (...) @llvm.coro.suspend.retcon.i1(i32 %inc6)
br i1 %unwind1, label %cleanup, label %resume1
resume1:
%inc = add i32 %n.val, 1
br label %loop
cleanup:
call i1 @llvm.coro.end(ptr %hdl, i1 0, token none)
unreachable
}
declare token @llvm.coro.id.retcon(i32, i32, ptr, ptr, ptr, ptr)
declare ptr @llvm.coro.begin(token, ptr)
declare i1 @llvm.coro.suspend.retcon.i1(...)
declare i1 @llvm.coro.end(ptr, i1, token)
declare ptr @llvm.coro.prepare.retcon(ptr)
declare { ptr, i32 } @f_prototype(ptr, i1 zeroext)
declare noalias ptr @allocate(i32 %size)
declare void @deallocate(ptr %ptr)
declare void @print(i32)
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