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; Check that we can handle edge splits leading into a landingpad
; RUN: opt < %s -coro-split -S | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; CHECK-LABEL: define internal fastcc void @f.resume(
define void @f(i1 %cond) "coroutine.presplit"="1" personality i32 0 {
entry:
%id = call token @llvm.coro.id(i32 16, i8* null, i8* null, i8* null)
%size = tail call i64 @llvm.coro.size.i64()
%alloc = call i8* @malloc(i64 %size)
%hdl = call i8* @llvm.coro.begin(token %id, i8* %alloc)
%sp = call i8 @llvm.coro.suspend(token none, i1 false)
switch i8 %sp, label %coro.ret [
i8 0, label %resume
i8 1, label %cleanup
]
resume:
br i1 %cond, label %invoke1, label %invoke2
invoke1:
invoke void @may_throw1()
to label %unreach unwind label %pad.with.phi
invoke2:
invoke void @may_throw2()
to label %unreach unwind label %pad.with.phi
; Verify that we cloned landing pad on every edge and inserted a reload of the spilled value
; CHECK: pad.with.phi.from.invoke2:
; CHECK: %0 = landingpad { i8*, i32 }
; CHECK: catch i8* null
; CHECK: br label %pad.with.phi
; CHECK: pad.with.phi.from.invoke1:
; CHECK: %1 = landingpad { i8*, i32 }
; CHECK: catch i8* null
; CHECK: br label %pad.with.phi
; CHECK: pad.with.phi:
; CHECK: %val = phi i32 [ 0, %pad.with.phi.from.invoke1 ], [ 1, %pad.with.phi.from.invoke2 ]
; CHECK: %lp = phi { i8*, i32 } [ %0, %pad.with.phi.from.invoke2 ], [ %1, %pad.with.phi.from.invoke1 ]
; CHECK: %exn = extractvalue { i8*, i32 } %lp, 0
; CHECK: call i8* @__cxa_begin_catch(i8* %exn)
; CHECK: call void @use_val(i32 %val)
; CHECK: call void @__cxa_end_catch()
; CHECK: call void @free(i8* %vFrame)
; CHECK: ret void
pad.with.phi:
%val = phi i32 [ 0, %invoke1 ], [ 1, %invoke2 ]
%lp = landingpad { i8*, i32 }
catch i8* null
%exn = extractvalue { i8*, i32 } %lp, 0
call i8* @__cxa_begin_catch(i8* %exn)
call void @use_val(i32 %val)
call void @__cxa_end_catch()
br label %cleanup
cleanup: ; preds = %invoke.cont15, %if.else, %if.then, %ehcleanup21, %init.suspend
%mem = call i8* @llvm.coro.free(token %id, i8* %hdl)
call void @free(i8* %mem)
br label %coro.ret
coro.ret:
call i1 @llvm.coro.end(i8* null, i1 false)
ret void
unreach:
unreachable
}
; CHECK-LABEL: define internal fastcc void @g.resume(
define void @g(i1 %cond, i32 %x, i32 %y) "coroutine.presplit"="1" personality i32 0 {
entry:
%id = call token @llvm.coro.id(i32 16, i8* null, i8* null, i8* null)
%size = tail call i64 @llvm.coro.size.i64()
%alloc = call i8* @malloc(i64 %size)
%hdl = call i8* @llvm.coro.begin(token %id, i8* %alloc)
%sp = call i8 @llvm.coro.suspend(token none, i1 false)
switch i8 %sp, label %coro.ret [
i8 0, label %resume
i8 1, label %cleanup
]
resume:
br i1 %cond, label %invoke1, label %invoke2
invoke1:
invoke void @may_throw1()
to label %unreach unwind label %pad.with.phi
invoke2:
invoke void @may_throw2()
to label %unreach unwind label %pad.with.phi
; Verify that we created cleanuppads on every edge and inserted a reload of the spilled value
; CHECK: pad.with.phi.from.invoke2:
; CHECK: %0 = cleanuppad within none []
; CHECK: %y.reload.addr = getelementptr inbounds %g.Frame, %g.Frame* %FramePtr, i32 0, i32 6
; CHECK: %y.reload = load i32, i32* %y.reload.addr
; CHECK: cleanupret from %0 unwind label %pad.with.phi
; CHECK: pad.with.phi.from.invoke1:
; CHECK: %1 = cleanuppad within none []
; CHECK: %x.reload.addr = getelementptr inbounds %g.Frame, %g.Frame* %FramePtr, i32 0, i32 5
; CHECK: %x.reload = load i32, i32* %x.reload.addr
; CHECK: cleanupret from %1 unwind label %pad.with.phi
; CHECK: pad.with.phi:
; CHECK: %val = phi i32 [ %x.reload, %pad.with.phi.from.invoke1 ], [ %y.reload, %pad.with.phi.from.invoke2 ]
; CHECK: %tok = cleanuppad within none []
; CHECK: call void @use_val(i32 %val)
; CHECK: cleanupret from %tok unwind to caller
pad.with.phi:
%val = phi i32 [ %x, %invoke1 ], [ %y, %invoke2 ]
%tok = cleanuppad within none []
call void @use_val(i32 %val)
cleanupret from %tok unwind to caller
cleanup: ; preds = %invoke.cont15, %if.else, %if.then, %ehcleanup21, %init.suspend
%mem = call i8* @llvm.coro.free(token %id, i8* %hdl)
call void @free(i8* %mem)
br label %coro.ret
coro.ret:
call i1 @llvm.coro.end(i8* null, i1 false)
ret void
unreach:
unreachable
}
; CHECK-LABEL: define internal fastcc void @h.resume(
define void @h(i1 %cond, i32 %x, i32 %y) "coroutine.presplit"="1" personality i32 0 {
entry:
%id = call token @llvm.coro.id(i32 16, i8* null, i8* null, i8* null)
%size = tail call i64 @llvm.coro.size.i64()
%alloc = call i8* @malloc(i64 %size)
%hdl = call i8* @llvm.coro.begin(token %id, i8* %alloc)
%sp = call i8 @llvm.coro.suspend(token none, i1 false)
switch i8 %sp, label %coro.ret [
i8 0, label %resume
i8 1, label %cleanup
]
resume:
br i1 %cond, label %invoke1, label %invoke2
invoke1:
invoke void @may_throw1()
to label %coro.ret unwind label %pad.with.phi
invoke2:
invoke void @may_throw2()
to label %coro.ret unwind label %pad.with.phi
; Verify that we created cleanuppads on every edge and inserted a reload of the spilled value
; CHECK: pad.with.phi.from.invoke2:
; CHECK: %0 = cleanuppad within none []
; CHECK: %y.reload.addr = getelementptr inbounds %h.Frame, %h.Frame* %FramePtr, i32 0, i32 6
; CHECK: %y.reload = load i32, i32* %y.reload.addr
; CHECK: cleanupret from %0 unwind label %pad.with.phi
; CHECK: pad.with.phi.from.invoke1:
; CHECK: %1 = cleanuppad within none []
; CHECK: %x.reload.addr = getelementptr inbounds %h.Frame, %h.Frame* %FramePtr, i32 0, i32 5
; CHECK: %x.reload = load i32, i32* %x.reload.addr
; CHECK: cleanupret from %1 unwind label %pad.with.phi
; CHECK: pad.with.phi:
; CHECK: %val = phi i32 [ %x.reload, %pad.with.phi.from.invoke1 ], [ %y.reload, %pad.with.phi.from.invoke2 ]
; CHECK: %switch = catchswitch within none [label %catch] unwind to caller
pad.with.phi:
%val = phi i32 [ %x, %invoke1 ], [ %y, %invoke2 ]
%switch = catchswitch within none [label %catch] unwind to caller
catch: ; preds = %catch.dispatch
%pad = catchpad within %switch [i8* null, i32 64, i8* null]
call void @use_val(i32 %val)
catchret from %pad to label %coro.ret
cleanup: ; preds = %invoke.cont15, %if.else, %if.then, %ehcleanup21, %init.suspend
%mem = call i8* @llvm.coro.free(token %id, i8* %hdl)
call void @free(i8* %mem)
br label %coro.ret
coro.ret:
call i1 @llvm.coro.end(i8* null, i1 false)
ret void
}
; Function Attrs: argmemonly nounwind readonly
declare token @llvm.coro.id(i32, i8* readnone, i8* nocapture readonly, i8*)
declare noalias i8* @malloc(i64)
declare i64 @llvm.coro.size.i64()
declare i8* @llvm.coro.begin(token, i8* writeonly)
; Function Attrs: nounwind
declare token @llvm.coro.save(i8*)
declare i8 @llvm.coro.suspend(token, i1)
; Function Attrs: argmemonly nounwind
declare void @may_throw1()
declare void @may_throw2()
declare i8* @__cxa_begin_catch(i8*)
declare void @use_val(i32)
declare void @__cxa_end_catch()
; Function Attrs: nounwind
declare i1 @llvm.coro.end(i8*, i1)
declare void @free(i8*)
declare i8* @llvm.coro.free(token, i8* nocapture readonly)
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