forked from OSchip/llvm-project
53 lines
1.5 KiB
LLVM
53 lines
1.5 KiB
LLVM
; Verifies that LICM is disabled for loops that contains coro.suspend.
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; RUN: opt -S < %s -passes=licm | FileCheck %s
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define i64 @licm(i64 %n) #0 {
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; CHECK-LABEL: @licm(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[P:%.*]] = alloca i64, align 8
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; CHECK-NEXT: br label [[BB0:%.*]]
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; CHECK: bb0:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[I:%.*]] = phi i64 [ 0, [[BB0]] ], [ [[T5:%.*]], [[AWAIT_READY:%.*]] ]
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; CHECK-NEXT: [[T5]] = add i64 [[I]], 1
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; CHECK-NEXT: [[SUSPEND:%.*]] = call i8 @llvm.coro.suspend(token none, i1 false)
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; CHECK-NEXT: switch i8 [[SUSPEND]], label [[BB2:%.*]] [
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; CHECK-NEXT: i8 0, label [[AWAIT_READY]]
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; CHECK-NEXT: ]
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; CHECK: await.ready:
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; CHECK-NEXT: store i64 1, i64* [[P]], align 4
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; CHECK-NEXT: [[T6:%.*]] = icmp ult i64 [[T5]], [[N:%.*]]
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; CHECK-NEXT: br i1 [[T6]], label [[LOOP]], label [[BB2]]
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; CHECK: bb2:
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; CHECK-NEXT: [[RES:%.*]] = call i1 @llvm.coro.end(i8* null, i1 false)
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; CHECK-NEXT: ret i64 0
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;
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entry:
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%p = alloca i64
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br label %bb0
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bb0:
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br label %loop
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loop:
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%i = phi i64 [ 0, %bb0 ], [ %t5, %await.ready ]
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%t5 = add i64 %i, 1
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%suspend = call i8 @llvm.coro.suspend(token none, i1 false)
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switch i8 %suspend, label %bb2 [
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i8 0, label %await.ready
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]
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await.ready:
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store i64 1, i64* %p
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%t6 = icmp ult i64 %t5, %n
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br i1 %t6, label %loop, label %bb2
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bb2:
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%res = call i1 @llvm.coro.end(i8* null, i1 false)
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ret i64 0
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}
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declare i8 @llvm.coro.suspend(token, i1)
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declare i1 @llvm.coro.end(i8*, i1)
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