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; RUN: opt < %s -enable-coroutines -O2 -S | FileCheck %s
target datalayout = "E-p:32:32"
define i8* @f(i8* %buffer, i32 %n, i8** swifterror %errorslot) {
entry:
%id = call token @llvm.coro.id.retcon(i32 8, i32 4, i8* %buffer, i8* bitcast (i8* (i8*, i1, i8**)* @f_prototype 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 ]
call void @print(i32 %n.val)
call void @maybeThrow(i8** swifterror %errorslot)
%errorload1 = load i8*, i8** %errorslot
call void @logError(i8* %errorload1)
%suspend_result = call { i1, i8** } (...) @llvm.coro.suspend.retcon.i1p0p0i8()
%unwind0 = extractvalue { i1, i8** } %suspend_result, 0
br i1 %unwind0, 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* @f(i8* %buffer, i32 %n, i8** swifterror %errorslot)
; CHECK-NEXT: entry:
; CHECK-NEXT: [[T0:%.*]] = bitcast i8* %buffer to i32*
; CHECK-NEXT: store i32 %n, i32* [[T0]], align 4
; CHECK-NEXT: call void @print(i32 %n)
; TODO: figure out a way to eliminate this
; CHECK-NEXT: store i8* null, i8** %errorslot
; CHECK-NEXT: call void @maybeThrow(i8** nonnull swifterror %errorslot)
; CHECK-NEXT: [[T1:%.*]] = load i8*, i8** %errorslot
; CHECK-NEXT: call void @logError(i8* [[T1]])
; CHECK-NEXT: store i8* [[T1]], i8** %errorslot
; CHECK-NEXT: ret i8* bitcast (i8* (i8*, i1, i8**)* @f.resume.0 to i8*)
; CHECK-NEXT: }
; CHECK-LABEL: define internal i8* @f.resume.0(i8* noalias nonnull align 4 dereferenceable(8) %0, i1 zeroext %1, i8** swifterror %2)
; CHECK-NEXT: :
; CHECK-NEXT: br i1 %1,
; CHECK: :
; CHECK-NEXT: [[ERROR:%.*]] = load i8*, i8** %2, align 4
; 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: call void @print(i32 %inc)
; CHECK-NEXT: store i8* [[ERROR]], i8** %2
; CHECK-NEXT: call void @maybeThrow(i8** nonnull swifterror %2)
; CHECK-NEXT: [[T2:%.*]] = load i8*, i8** %2
; CHECK-NEXT: call void @logError(i8* [[T2]])
; CHECK-NEXT: store i8* [[T2]], i8** %2
; CHECK-NEXT: ret i8* bitcast (i8* (i8*, i1, i8**)* @f.resume.0 to i8*)
; CHECK: :
; CHECK-NEXT: ret i8* null
; CHECK-NEXT: }
define i8* @g(i8* %buffer, i32 %n) {
entry:
%errorslot = alloca swifterror i8*, align 4
store i8* null, i8** %errorslot
%id = call token @llvm.coro.id.retcon(i32 8, i32 4, i8* %buffer, i8* bitcast (i8* (i8*, i1)* @g_prototype 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 ]
call void @print(i32 %n.val)
call void @maybeThrow(i8** swifterror %errorslot)
%errorload1 = load i8*, i8** %errorslot
call void @logError(i8* %errorload1)
%unwind0 = call i1 (...) @llvm.coro.suspend.retcon.i1()
br i1 %unwind0, 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* @g(i8* %buffer, i32 %n)
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ERRORSLOT:%.*]] = alloca swifterror i8*, align 4
; CHECK-NEXT: [[T0:%.*]] = bitcast i8* %buffer to i32*
; CHECK-NEXT: store i32 %n, i32* [[T0]], align 4
; CHECK-NEXT: call void @print(i32 %n)
; CHECK-NEXT: store i8* null, i8** [[ERRORSLOT]], align 4
; CHECK-NEXT: call void @maybeThrow(i8** nonnull swifterror [[ERRORSLOT]])
; CHECK-NEXT: [[T1:%.*]] = load i8*, i8** [[ERRORSLOT]], align 4
; CHECK-NEXT: [[T2:%.*]] = getelementptr inbounds i8, i8* %buffer, i32 4
; CHECK-NEXT: [[T3:%.*]] = bitcast i8* [[T2]] to i8**
; CHECK-NEXT: store i8* [[T1]], i8** [[T3]], align 4
; CHECK-NEXT: call void @logError(i8* [[T1]])
; CHECK-NEXT: ret i8* bitcast (i8* (i8*, i1)* @g.resume.0 to i8*)
; CHECK-NEXT: }
; CHECK-LABEL: define internal i8* @g.resume.0(i8* noalias nonnull align 4 dereferenceable(8) %0, i1 zeroext %1)
; CHECK-NEXT: :
; CHECK-NEXT: [[ERRORSLOT:%.*]] = alloca swifterror i8*, align 4
; 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: [[T2:%.*]] = getelementptr inbounds i8, i8* %0, i32 4
; CHECK-NEXT: [[T3:%.*]] = bitcast i8* [[T2]] to i8**
; CHECK-NEXT: [[T4:%.*]] = load i8*, i8** [[T3]]
; CHECK-NEXT: store i32 %inc, i32* [[T0]], align 4
; CHECK-NEXT: call void @print(i32 %inc)
; CHECK-NEXT: store i8* [[T4]], i8** [[ERRORSLOT]]
; CHECK-NEXT: call void @maybeThrow(i8** nonnull swifterror [[ERRORSLOT]])
; CHECK-NEXT: [[T5:%.*]] = load i8*, i8** [[ERRORSLOT]]
; CHECK-NEXT: store i8* [[T5]], i8** [[T3]], align 4
; CHECK-NEXT: call void @logError(i8* [[T5]])
; CHECK-NEXT: ret i8* bitcast (i8* (i8*, i1)* @g.resume.0 to i8*)
; CHECK: :
; CHECK-NEXT: ret i8* null
; CHECK-NEXT: }
declare token @llvm.coro.id.retcon(i32, i32, i8*, i8*, i8*, i8*)
declare i8* @llvm.coro.begin(token, i8*)
declare { i1, i8** } @llvm.coro.suspend.retcon.i1p0p0i8(...)
declare i1 @llvm.coro.suspend.retcon.i1(...)
declare i1 @llvm.coro.end(i8*, i1)
declare i8* @llvm.coro.prepare.retcon(i8*)
declare i8* @f_prototype(i8*, i1 zeroext, i8** swifterror)
declare i8* @g_prototype(i8*, i1 zeroext)
declare noalias i8* @allocate(i32 %size)
declare void @deallocate(i8* %ptr)
declare void @print(i32)
declare void @maybeThrow(i8** swifterror)
declare void @logError(i8*)
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