; Check that we can handle edge splits leading into a landingpad
; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -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) presplitcoroutine personality i32 0 {
entry:
%id = call token @llvm.coro.id(i32 16, ptr null, ptr null, ptr null)
%size = tail call i64 @llvm.coro.size.i64()
%alloc = call ptr @malloc(i64 %size)
%hdl = call ptr @llvm.coro.begin(token %id, ptr %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 { ptr, i32 }
; CHECK: catch ptr null
; CHECK: br label %pad.with.phi
; CHECK: pad.with.phi.from.invoke1:
; CHECK: %1 = landingpad { ptr, i32 }
; CHECK: catch ptr 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 { ptr, i32 } [ %0, %pad.with.phi.from.invoke2 ], [ %1, %pad.with.phi.from.invoke1 ]
; CHECK: %exn = extractvalue { ptr, i32 } %lp, 0
; CHECK: call ptr @__cxa_begin_catch(ptr %exn)
; CHECK: call void @use_val(i32 %val)
; CHECK: call void @__cxa_end_catch()
; CHECK: call void @free(ptr %hdl)
; CHECK: ret void
pad.with.phi:
%val = phi i32 [ 0, %invoke1 ], [ 1, %invoke2 ]
%lp = landingpad { ptr, i32 }
catch ptr null
%exn = extractvalue { ptr, i32 } %lp, 0
call ptr @__cxa_begin_catch(ptr %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 ptr @llvm.coro.free(token %id, ptr %hdl)
call void @free(ptr %mem)
br label %coro.ret
coro.ret:
call i1 @llvm.coro.end(ptr null, i1 false, token none)
ret void
unreach:
unreachable
}
; Function Attrs: argmemonly nounwind readonly
declare token @llvm.coro.id(i32, ptr readnone, ptr nocapture readonly, ptr)
declare noalias ptr @malloc(i64)
declare i64 @llvm.coro.size.i64()
declare ptr @llvm.coro.begin(token, ptr writeonly)
; Function Attrs: nounwind
declare token @llvm.coro.save(ptr)
declare i8 @llvm.coro.suspend(token, i1)
; Function Attrs: argmemonly nounwind
declare void @may_throw1()
declare void @may_throw2()
declare ptr @__cxa_begin_catch(ptr)
declare void @use_val(i32)
declare void @__cxa_end_catch()
; Function Attrs: nounwind
declare i1 @llvm.coro.end(ptr, i1, token)
declare void @free(ptr)
declare ptr @llvm.coro.free(token, ptr nocapture readonly)
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