derek.holloway
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80 lines
2.3 KiB
LLVM
80 lines
2.3 KiB
LLVM
; RUN: opt -passes=strip-convergence-intrinsics -S < %s | FileCheck %s
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; Verify that convergence intrinsics and convergencectrl operand bundles are
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; stripped by the pass.
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define void @entry_and_call() convergent {
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; CHECK-LABEL: define void @entry_and_call()
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; CHECK-NEXT: entry:
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; CHECK-NEXT: call void @convergent_callee()
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; CHECK-NOT: convergence
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; CHECK-NEXT: ret void
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entry:
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%0 = call token @llvm.experimental.convergence.entry()
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call void @convergent_callee() [ "convergencectrl"(token %0) ]
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ret void
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}
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define void @loop_with_token() convergent {
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; CHECK-LABEL: define void @loop_with_token()
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label %loop
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; CHECK: loop:
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; CHECK-NEXT: call void @convergent_callee()
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; CHECK-NOT: convergence
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; CHECK-NEXT: br i1
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entry:
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%0 = call token @llvm.experimental.convergence.entry()
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br label %loop
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loop:
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%1 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ]
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call void @convergent_callee() [ "convergencectrl"(token %1) ]
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br i1 true, label %exit, label %loop
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exit:
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ret void
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}
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define void @anchor_token() convergent {
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; CHECK-LABEL: define void @anchor_token()
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; CHECK-NEXT: entry:
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; CHECK-NEXT: call void @convergent_callee()
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; CHECK-NOT: convergence
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; CHECK-NEXT: ret void
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entry:
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%0 = call token @llvm.experimental.convergence.anchor()
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call void @convergent_callee() [ "convergencectrl"(token %0) ]
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ret void
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}
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; This ensures that when the use of a token is defined before the call that
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; creates the token, we are still able to strip them as expected.
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define void @reversed_block_order() convergent {
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; CHECK-LABEL: define void @reversed_block_order()
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label %[[B:.*]]
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; CHECK: [[A:.*]]:
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; CHECK-NEXT: call void @convergent_callee()
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; CHECK-NEXT: ret void
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; CHECK: [[B]]:
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; CHECK-NEXT: br label %[[A]]
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entry:
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br label %B
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A:
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call void @convergent_callee() [ "convergencectrl"(token %tok) ]
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ret void
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B:
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%tok = call token @llvm.experimental.convergence.anchor()
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br label %A
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}
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; Declarations may remain but should have no uses in function bodies.
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; CHECK-LABEL: declare void @convergent_callee
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declare void @convergent_callee() convergent
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declare token @llvm.experimental.convergence.entry()
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declare token @llvm.experimental.convergence.loop()
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declare token @llvm.experimental.convergence.anchor()
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