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1; Check that we can handle edge splits leading into a landingpad2; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s3 4target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"5target triple = "x86_64-unknown-linux-gnu"6 7; CHECK-LABEL: define internal fastcc void @f.resume(8define void @f(i1 %cond) presplitcoroutine personality i32 0 {9entry:10 %id = call token @llvm.coro.id(i32 16, ptr null, ptr null, ptr null)11 %size = tail call i64 @llvm.coro.size.i64()12 %alloc = call ptr @malloc(i64 %size)13 %hdl = call ptr @llvm.coro.begin(token %id, ptr %alloc)14 %sp = call i8 @llvm.coro.suspend(token none, i1 false)15 switch i8 %sp, label %coro.ret [16 i8 0, label %resume17 i8 1, label %cleanup18 ]19 20resume:21 br i1 %cond, label %invoke1, label %invoke222 23invoke1:24 invoke void @may_throw1()25 to label %unreach unwind label %pad.with.phi26invoke2:27 invoke void @may_throw2()28 to label %unreach unwind label %pad.with.phi29 30; Verify that we cloned landing pad on every edge and inserted a reload of the spilled value31 32; CHECK: pad.with.phi.from.invoke2:33; CHECK: %0 = landingpad { ptr, i32 }34; CHECK: catch ptr null35; CHECK: br label %pad.with.phi36 37; CHECK: pad.with.phi.from.invoke1:38; CHECK: %1 = landingpad { ptr, i32 }39; CHECK: catch ptr null40; CHECK: br label %pad.with.phi41 42; CHECK: pad.with.phi:43; CHECK: %val = phi i32 [ 0, %pad.with.phi.from.invoke1 ], [ 1, %pad.with.phi.from.invoke2 ]44; CHECK: %lp = phi { ptr, i32 } [ %0, %pad.with.phi.from.invoke2 ], [ %1, %pad.with.phi.from.invoke1 ]45; CHECK: %exn = extractvalue { ptr, i32 } %lp, 046; CHECK: call ptr @__cxa_begin_catch(ptr %exn)47; CHECK: call void @use_val(i32 %val)48; CHECK: call void @__cxa_end_catch()49; CHECK: call void @free(ptr %hdl)50; CHECK: ret void51 52pad.with.phi:53 %val = phi i32 [ 0, %invoke1 ], [ 1, %invoke2 ]54 %lp = landingpad { ptr, i32 }55 catch ptr null56 %exn = extractvalue { ptr, i32 } %lp, 057 call ptr @__cxa_begin_catch(ptr %exn)58 call void @use_val(i32 %val)59 call void @__cxa_end_catch()60 br label %cleanup61 62cleanup: ; preds = %invoke.cont15, %if.else, %if.then, %ehcleanup21, %init.suspend63 %mem = call ptr @llvm.coro.free(token %id, ptr %hdl)64 call void @free(ptr %mem)65 br label %coro.ret66 67coro.ret:68 call void @llvm.coro.end(ptr null, i1 false, token none)69 ret void70 71unreach:72 unreachable73}74 75; Function Attrs: argmemonly nounwind readonly76declare token @llvm.coro.id(i32, ptr readnone, ptr nocapture readonly, ptr)77declare noalias ptr @malloc(i64)78declare i64 @llvm.coro.size.i64()79declare ptr @llvm.coro.begin(token, ptr writeonly)80 81; Function Attrs: nounwind82declare token @llvm.coro.save(ptr)83declare i8 @llvm.coro.suspend(token, i1)84 85; Function Attrs: argmemonly nounwind86declare void @may_throw1()87declare void @may_throw2()88 89declare ptr @__cxa_begin_catch(ptr)90 91declare void @use_val(i32)92declare void @__cxa_end_catch()93 94; Function Attrs: nounwind95declare void @llvm.coro.end(ptr, i1, token)96declare void @free(ptr)97declare ptr @llvm.coro.free(token, ptr nocapture readonly)98