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| ; RUN: opt < %s -enable-coroutines -O2 -S | FileCheck %s
target datalayout = "p:64:64:64"
declare {i8*, i8*, i32} @prototype_f(i8*, i1)
define {i8*, i8*, i32} @f(i8* %buffer, i32 %n) {
entry:
%id = call token @llvm.coro.id.retcon(i32 1024, i32 8, i8* %buffer, i8* bitcast ({i8*, i8*, i32} (i8*, i1)* @prototype_f to i8*), i8* bitcast (i8* (i32)* @allocate to i8*), i8* bitcast (void (i8*)* @deallocate to i8*))
%hdl = call i8* @llvm.coro.begin(token %id, i8* null)
br label %loop
loop:
%n.val = phi i32 [ %n, %entry ], [ %inc, %resume ]
%alloca = call token @llvm.coro.alloca.alloc.i32(i32 %n.val, i32 8)
%ptr = call i8* @llvm.coro.alloca.get(token %alloca)
%unwind = call i1 (...) @llvm.coro.suspend.retcon.i1(i8* %ptr, i32 %n.val)
call void @llvm.coro.alloca.free(token %alloca)
br i1 %unwind, label %cleanup, label %resume
resume:
%inc = add i32 %n.val, 1
br label %loop
cleanup:
call i1 @llvm.coro.end(i8* %hdl, i1 0)
unreachable
}
; CHECK-LABEL: define { i8*, i8*, i32 } @f(i8* %buffer, i32 %n)
; CHECK-NEXT: entry:
; CHECK-NEXT: [[T0:%.*]] = bitcast i8* %buffer to i32*
; CHECK-NEXT: store i32 %n, i32* [[T0]], align 4
; CHECK-NEXT: [[ALLOC:%.*]] = tail call i8* @allocate(i32 %n)
; CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds i8, i8* %buffer, i64 8
; CHECK-NEXT: [[T1:%.*]] = bitcast i8* [[T0]] to i8**
; CHECK-NEXT: store i8* [[ALLOC]], i8** [[T1]], align 8
; CHECK-NEXT: [[T0:%.*]] = insertvalue { i8*, i8*, i32 } { i8* bitcast ({ i8*, i8*, i32 } (i8*, i1)* @f.resume.0 to i8*), i8* undef, i32 undef }, i8* [[ALLOC]], 1
; CHECK-NEXT: [[RET:%.*]] = insertvalue { i8*, i8*, i32 } [[T0]], i32 %n, 2
; CHECK-NEXT: ret { i8*, i8*, i32 } [[RET]]
; CHECK-NEXT: }
; CHECK-LABEL: define internal { i8*, i8*, i32 } @f.resume.0(i8* noalias nonnull %0, i1 %1)
; CHECK-NEXT: :
; CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds i8, i8* %0, i64 8
; CHECK-NEXT: [[T1:%.*]] = bitcast i8* [[T0]] to i8**
; CHECK-NEXT: [[ALLOC:%.*]] = load i8*, i8** [[T1]], align 8
; CHECK-NEXT: tail call void @deallocate(i8* [[ALLOC]])
; CHECK-NEXT: br i1 %1,
declare {i8*, i32} @prototype_g(i8*, i1)
define {i8*, i32} @g(i8* %buffer, i32 %n) {
entry:
%id = call token @llvm.coro.id.retcon(i32 1024, i32 8, i8* %buffer, i8* bitcast ({i8*, i32} (i8*, i1)* @prototype_g to i8*), i8* bitcast (i8* (i32)* @allocate to i8*), i8* bitcast (void (i8*)* @deallocate to i8*))
%hdl = call i8* @llvm.coro.begin(token %id, i8* null)
br label %loop
loop:
%n.val = phi i32 [ %n, %entry ], [ %inc, %resume ]
%alloca = call token @llvm.coro.alloca.alloc.i32(i32 %n.val, i32 8)
%ptr = call i8* @llvm.coro.alloca.get(token %alloca)
call void @use(i8* %ptr)
call void @llvm.coro.alloca.free(token %alloca)
%unwind = call i1 (...) @llvm.coro.suspend.retcon.i1(i32 %n.val)
br i1 %unwind, label %cleanup, label %resume
resume:
%inc = add i32 %n.val, 1
br label %loop
cleanup:
call i1 @llvm.coro.end(i8* %hdl, i1 0)
unreachable
}
; CHECK-LABEL: define { i8*, i32 } @g(i8* %buffer, i32 %n)
; CHECK-NEXT: entry:
; CHECK-NEXT: [[T0:%.*]] = bitcast i8* %buffer to i32*
; CHECK-NEXT: store i32 %n, i32* [[T0]], align 4
; CHECK-NEXT: [[T0:%.*]] = zext i32 %n to i64
; CHECK-NEXT: [[ALLOC:%.*]] = alloca i8, i64 [[T0]], align 8
; CHECK-NEXT: call void @use(i8* nonnull [[ALLOC]])
; CHECK-NEXT: [[RET:%.*]] = insertvalue { i8*, i32 } { i8* bitcast ({ i8*, i32 } (i8*, i1)* @g.resume.0 to i8*), i32 undef }, i32 %n, 1
; CHECK-NEXT: ret { i8*, i32 } [[RET]]
; CHECK-NEXT: }
; CHECK-LABEL: define internal { i8*, i32 } @g.resume.0(i8* noalias nonnull %0, i1 %1)
; CHECK-NEXT: :
; CHECK-NEXT: br i1 %1,
; CHECK: :
; CHECK-NEXT: [[T0:%.*]] = bitcast i8* %0 to i32*
; CHECK-NEXT: [[T1:%.*]] = load i32, i32* [[T0]], align 4
; CHECK-NEXT: %inc = add i32 [[T1]], 1
; CHECK-NEXT: store i32 %inc, i32* [[T0]], align 4
; CHECK-NEXT: [[T0:%.*]] = zext i32 %inc to i64
; CHECK-NEXT: [[ALLOC:%.*]] = alloca i8, i64 [[T0]], align 8
; CHECK-NEXT: call void @use(i8* nonnull [[ALLOC]])
; CHECK-NEXT: [[RET:%.*]] = insertvalue { i8*, i32 } { i8* bitcast ({ i8*, i32 } (i8*, i1)* @g.resume.0 to i8*), i32 undef }, i32 %inc, 1
; CHECK-NEXT: ret { i8*, i32 } [[RET]]
; CHECK: :
; CHECK-NEXT: ret { i8*, i32 } { i8* null, i32 undef }
declare {i8*, i32} @prototype_h(i8*, i1)
define {i8*, i32} @h(i8* %buffer, i32 %n) {
entry:
%id = call token @llvm.coro.id.retcon(i32 1024, i32 8, i8* %buffer, i8* bitcast ({i8*, i32} (i8*, i1)* @prototype_h to i8*), i8* bitcast (i8* (i32)* @allocate to i8*), i8* bitcast (void (i8*)* @deallocate to i8*))
%hdl = call i8* @llvm.coro.begin(token %id, i8* null)
br label %loop
loop:
%n.val = phi i32 [ %n, %entry ], [ %inc, %resume ]
%unwind = call i1 (...) @llvm.coro.suspend.retcon.i1(i32 %n.val)
br i1 %unwind, label %cleanup, label %resume
resume:
%inc = add i32 %n.val, 1
%alloca = call token @llvm.coro.alloca.alloc.i32(i32 %inc, i32 8)
%ptr = call i8* @llvm.coro.alloca.get(token %alloca)
call void @use(i8* %ptr)
call void @llvm.coro.alloca.free(token %alloca)
br label %loop
cleanup:
call i1 @llvm.coro.end(i8* %hdl, i1 0)
unreachable
}
; CHECK-LABEL: define { i8*, i32 } @h(i8* %buffer, i32 %n)
; CHECK-NEXT: entry:
; CHECK-NEXT: [[T0:%.*]] = bitcast i8* %buffer to i32*
; CHECK-NEXT: store i32 %n, i32* [[T0]], align 4
; CHECK-NEXT: [[RET:%.*]] = insertvalue { i8*, i32 } { i8* bitcast ({ i8*, i32 } (i8*, i1)* @h.resume.0 to i8*), i32 undef }, i32 %n, 1
; CHECK-NEXT: ret { i8*, i32 } [[RET]]
; CHECK-NEXT: }
; CHECK-LABEL: define internal { i8*, i32 } @h.resume.0(i8* noalias nonnull %0, i1 %1)
; CHECK-NEXT: :
; CHECK-NEXT: br i1 %1,
; CHECK: :
; CHECK-NEXT: [[NSLOT:%.*]] = bitcast i8* %0 to i32*
; CHECK-NEXT: [[T1:%.*]] = load i32, i32* [[NSLOT]], align 4
; CHECK-NEXT: %inc = add i32 [[T1]], 1
; CHECK-NEXT: [[T0:%.*]] = zext i32 %inc to i64
; CHECK-NEXT: [[ALLOC:%.*]] = alloca i8, i64 [[T0]], align 8
; CHECK-NEXT: call void @use(i8* nonnull [[ALLOC]])
; CHECK-NEXT: store i32 %inc, i32* [[NSLOT]], align 4
; CHECK-NEXT: [[RET:%.*]] = insertvalue { i8*, i32 } { i8* bitcast ({ i8*, i32 } (i8*, i1)* @h.resume.0 to i8*), i32 undef }, i32 %inc, 1
; CHECK-NEXT: ret { i8*, i32 } [[RET]]
; CHECK: :
; CHECK-NEXT: ret { i8*, i32 } { i8* null, i32 undef }
declare {i8*, i32} @prototype_i(i8*)
define {i8*, i32} @i(i8* %buffer, i32 %n) {
entry:
%id = call token @llvm.coro.id.retcon(i32 1024, i32 8, i8* %buffer, i8* bitcast ({i8*, i32} (i8*)* @prototype_i to i8*), i8* bitcast (i8* (i32)* @allocate to i8*), i8* bitcast (void (i8*)* @deallocate to i8*))
%hdl = call i8* @llvm.coro.begin(token %id, i8* null)
br label %loop
loop:
%n.val = phi i32 [ %n, %entry ], [ %k, %loop2 ]
call void (...) @llvm.coro.suspend.retcon.isVoid(i32 %n.val)
%inc = add i32 %n.val, 1
br label %loop2
loop2:
%k = phi i32 [ %inc, %loop ], [ %k2, %loop2 ]
%alloca = call token @llvm.coro.alloca.alloc.i32(i32 %k, i32 8)
%ptr = call i8* @llvm.coro.alloca.get(token %alloca)
call void @use(i8* %ptr)
call void @llvm.coro.alloca.free(token %alloca)
%k2 = lshr i32 %k, 1
%cmp = icmp ugt i32 %k, 128
br i1 %cmp, label %loop2, label %loop
}
; CHECK-LABEL: define { i8*, i32 } @i(i8* %buffer, i32 %n)
; CHECK-NEXT: entry:
; CHECK-NEXT: [[T0:%.*]] = bitcast i8* %buffer to i32*
; CHECK-NEXT: store i32 %n, i32* [[T0]], align 4
; CHECK-NEXT: [[RET:%.*]] = insertvalue { i8*, i32 } { i8* bitcast ({ i8*, i32 } (i8*)* @i.resume.0 to i8*), i32 undef }, i32 %n, 1
; CHECK-NEXT: ret { i8*, i32 } [[RET]]
; CHECK-NEXT: }
; CHECK-LABEL: define internal { i8*, i32 } @i.resume.0(i8* noalias nonnull %0)
; CHECK-NEXT: :
; CHECK-NEXT: [[NSLOT:%.*]] = bitcast i8* %0 to i32*
; CHECK-NEXT: [[T1:%.*]] = load i32, i32* [[NSLOT]], align 4
; CHECK-NEXT: %inc = add i32 [[T1]], 1
; CHECK-NEXT: br label %loop2
; CHECK: :
; CHECK-NEXT: store i32 %k, i32* [[NSLOT]], align 4
; CHECK-NEXT: [[RET:%.*]] = insertvalue { i8*, i32 } { i8* bitcast ({ i8*, i32 } (i8*)* @i.resume.0 to i8*), i32 undef }, i32 %k, 1
; CHECK-NEXT: ret { i8*, i32 } [[RET]]
; CHECK: loop2:
; CHECK-NEXT: %k = phi i32 [ %inc, {{.*}} ], [ %k2, %loop2 ]
; CHECK-NEXT: [[SAVE:%.*]] = call i8* @llvm.stacksave()
; CHECK-NEXT: [[T0:%.*]] = zext i32 %k to i64
; CHECK-NEXT: [[ALLOC:%.*]] = alloca i8, i64 [[T0]], align 8
; CHECK-NEXT: call void @use(i8* nonnull [[ALLOC]])
; CHECK-NEXT: call void @llvm.stackrestore(i8* [[SAVE]])
; CHECK-NEXT: %k2 = lshr i32 %k, 1
; CHECK-NEXT: %cmp = icmp ugt i32 %k, 128
; CHECK-NEXT: br i1 %cmp, label %loop2,
; CHECK-NEXT: }
declare {i8*, i32} @prototype_j(i8*)
define {i8*, i32} @j(i8* %buffer, i32 %n) {
entry:
%id = call token @llvm.coro.id.retcon(i32 1024, i32 8, i8* %buffer, i8* bitcast ({i8*, i32} (i8*)* @prototype_j to i8*), i8* bitcast (i8* (i32)* @allocate to i8*), i8* bitcast (void (i8*)* @deallocate to i8*))
%hdl = call i8* @llvm.coro.begin(token %id, i8* null)
br label %forward
back:
; We should encounter this 'get' before we encounter the 'alloc'.
%ptr = call i8* @llvm.coro.alloca.get(token %alloca)
call void @use(i8* %ptr)
call void @llvm.coro.alloca.free(token %alloca)
%k = add i32 %n.val, 1
%cmp = icmp ugt i32 %k, 128
br i1 %cmp, label %forward, label %end
forward:
%n.val = phi i32 [ %n, %entry ], [ %k, %back ]
call void (...) @llvm.coro.suspend.retcon.isVoid(i32 %n.val)
%alloca = call token @llvm.coro.alloca.alloc.i32(i32 %n.val, i32 8)
%inc = add i32 %n.val, 1
br label %back
end:
call i1 @llvm.coro.end(i8* %hdl, i1 0)
unreachable
}
declare token @llvm.coro.id.retcon(i32, i32, i8*, i8*, i8*, i8*)
declare i8* @llvm.coro.begin(token, i8*)
declare i1 @llvm.coro.suspend.retcon.i1(...)
declare void @llvm.coro.suspend.retcon.isVoid(...)
declare i1 @llvm.coro.end(i8*, i1)
declare i8* @llvm.coro.prepare.retcon(i8*)
declare token @llvm.coro.alloca.alloc.i32(i32, i32)
declare i8* @llvm.coro.alloca.get(token)
declare void @llvm.coro.alloca.free(token)
declare noalias i8* @allocate(i32 %size)
declare void @deallocate(i8* %ptr)
declare void @print(i32)
declare void @use(i8*)
|