b7f24923a3
With new pm becomes the default, the old-style test command becomes exactly the same as the new test command, i.e. the two commands are now redundant. We should just delete the old command. (unless someone wants to add enable-new-pm=0 to all old commands. Differential Revision: https://reviews.llvm.org/D104895
70 lines
2.1 KiB
LLVM
70 lines
2.1 KiB
LLVM
; Second example from Doc/Coroutines.rst (custom alloc and free functions)
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; RUN: opt < %s -passes='default<O2>' -enable-coroutines -S | FileCheck %s
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define 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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%need.dyn.alloc = call i1 @llvm.coro.alloc(token %id)
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br i1 %need.dyn.alloc, label %dyn.alloc, label %coro.begin
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dyn.alloc:
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%size = call i32 @llvm.coro.size.i32()
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%alloc = call i8* @CustomAlloc(i32 %size)
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br label %coro.begin
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coro.begin:
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%phi = phi i8* [ null, %entry ], [ %alloc, %dyn.alloc ]
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%hdl = call noalias i8* @llvm.coro.begin(token %id, i8* %phi)
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br label %loop
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loop:
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%n.val = phi i32 [ %n, %coro.begin ], [ %inc, %loop ]
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%inc = add nsw i32 %n.val, 1
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call void @print(i32 %n.val)
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%0 = call i8 @llvm.coro.suspend(token none, i1 false)
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switch i8 %0, label %suspend [i8 0, label %loop
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i8 1, label %cleanup]
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cleanup:
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%mem = call i8* @llvm.coro.free(token %id, i8* %hdl)
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%need.dyn.free = icmp ne i8* %mem, null
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br i1 %need.dyn.free, label %dyn.free, label %suspend
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dyn.free:
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call void @CustomFree(i8* %mem)
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br label %suspend
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suspend:
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call i1 @llvm.coro.end(i8* %hdl, i1 false)
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ret i8* %hdl
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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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%to = icmp eq i8* %hdl, null
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br i1 %to, label %return, label %destroy
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destroy:
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call void @llvm.coro.destroy(i8* %hdl)
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br label %return
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return:
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ret i32 0
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; CHECK-NOT: call i8* @CustomAlloc
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; CHECK: call void @print(i32 4)
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; CHECK-NEXT: call void @print(i32 5)
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; CHECK-NEXT: call void @print(i32 6)
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; CHECK-NEXT: ret i32 0
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}
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declare i8* @CustomAlloc(i32)
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declare void @CustomFree(i8*)
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declare void @print(i32)
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declare token @llvm.coro.id(i32, i8*, i8*, i8*)
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declare i1 @llvm.coro.alloc(token)
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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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