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TheRock/compiler/amd-llvm/llvm/test/Transforms/StripConvergenceIntrinsics/basic.ll
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80 lines
2.3 KiB
LLVM

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