9d172c8e9c
This switches to using DSE + MemorySSA by default again, after fixing the issues reported after the first commit. Notable fixes fc8200633122, a0017c2bc258. This reverts commit 3a59628f3cc26eb085acfc9cbdc97243ef71a6c5.
80 lines
2.5 KiB
LLVM
80 lines
2.5 KiB
LLVM
; Need to move users of allocas that were moved into the coroutine frame after
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; coro.begin.
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; RUN: opt < %s -preserve-alignment-assumptions-during-inlining=false -O2 -enable-coroutines -S | FileCheck %s
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; RUN: opt < %s -preserve-alignment-assumptions-during-inlining=false -aa-pipeline=basic-aa -passes='default<O2>' -enable-coroutines -S | FileCheck %s
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define nonnull i8* @f(i32 %n) {
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entry:
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%id = call token @llvm.coro.id(i32 0, i8* null, i8* null, i8* null);
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%n.addr = alloca i32
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store i32 %n, i32* %n.addr ; this needs to go after coro.begin
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%0 = tail call i32 @llvm.coro.size.i32()
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%call = tail call i8* @malloc(i32 %0)
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%1 = tail call noalias nonnull i8* @llvm.coro.begin(token %id, i8* %call)
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%2 = bitcast i32* %n.addr to i8*
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call void @ctor(i8* %2)
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br label %for.cond
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for.cond:
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%3 = load i32, i32* %n.addr
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%dec = add nsw i32 %3, -1
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store i32 %dec, i32* %n.addr
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call void @print(i32 %3)
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%4 = call i8 @llvm.coro.suspend(token none, i1 false)
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%conv = sext i8 %4 to i32
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switch i32 %conv, label %coro_Suspend [
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i32 0, label %for.cond
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i32 1, label %coro_Cleanup
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]
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coro_Cleanup:
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%5 = call i8* @llvm.coro.free(token %id, i8* nonnull %1)
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call void @free(i8* %5)
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br label %coro_Suspend
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coro_Suspend:
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call i1 @llvm.coro.end(i8* null, i1 false)
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ret i8* %1
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}
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; CHECK-LABEL: @main
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define i32 @main() {
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entry:
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%hdl = call i8* @f(i32 4)
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call void @llvm.coro.resume(i8* %hdl)
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call void @llvm.coro.resume(i8* %hdl)
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call void @llvm.coro.destroy(i8* %hdl)
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ret i32 0
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; CHECK: call void @ctor
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; CHECK-NEXT: %dec1.spill.addr.i = getelementptr inbounds i8, i8* %call.i, i64 20
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; CHECK-NEXT: bitcast i8* %dec1.spill.addr.i to i32*
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; CHECK-NEXT: store i32 4
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; CHECK-NEXT: call void @print(i32 4)
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; CHECK-NEXT: %index.addr13.i = getelementptr inbounds i8, i8* %call.i, i64 24
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; CHECK-NEXT: bitcast i8* %index.addr13.i to i1*
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; CHECK-NEXT: store i1 false
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; CHECK-NEXT: store i32 3
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; CHECK-NEXT: store i32 3
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; CHECK-NEXT: call void @print(i32 3)
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; CHECK-NEXT: store i1 false
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; CHECK-NEXT: store i32 2
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; CHECK-NEXT: store i32 2
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; CHECK-NEXT: call void @print(i32 2)
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; CHECK: ret i32 0
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}
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declare i8* @malloc(i32)
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declare void @free(i8*)
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declare void @print(i32)
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declare void @ctor(i8* nocapture readonly)
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declare token @llvm.coro.id(i32, i8*, i8*, i8*)
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declare i32 @llvm.coro.size.i32()
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declare i8* @llvm.coro.begin(token, i8*)
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declare i8 @llvm.coro.suspend(token, i1)
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declare i8* @llvm.coro.free(token, i8*)
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declare i1 @llvm.coro.end(i8*, i1)
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declare void @llvm.coro.resume(i8*)
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declare void @llvm.coro.destroy(i8*)
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