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# RUN: not --crash llc -mtriple=amdgcn -run-pass=none -verify-machineinstrs -o /dev/null %s 2>&1 | FileCheck %s
---
name: basic
tracksRegLiveness: true
body: |
bb.0:
successors: %bb.1, %bb.2;
%0:sgpr_64 = CONVERGENCECTRL_ANCHOR
; CHECK: Entry intrinsic cannot be preceded by a convergent operation in the same basic block.
; CHECK: CONVERGENCECTRL_ENTRY
%1:sgpr_64 = CONVERGENCECTRL_ENTRY
; CHECK: Loop intrinsic cannot be preceded by a convergent operation in the same basic block.
; CHECK: CONVERGENCECTRL_LOOP
%2:sgpr_64 = CONVERGENCECTRL_LOOP %0:sgpr_64
S_CBRANCH_EXECZ %bb.1, implicit $exec
S_BRANCH %bb.2
bb.1:
successors: %bb.2;
; CHECK: Entry intrinsic can occur only in the entry block.
; CHECK: CONVERGENCECTRL_ENTRY
%5:sgpr_64 = CONVERGENCECTRL_ENTRY
bb.2:
; CHECK: Convergence control tokens can only be used by convergent operations.
; CHECK: G_PHI
%6:sgpr_64 = G_PHI %0:sgpr_64, %bb.0, %0:sgpr_64, %bb.1
%7:sgpr_64 = CONVERGENCECTRL_ANCHOR
%8:sgpr_64 = IMPLICIT_DEF
%4:sgpr_64 = SI_CALL %8:sgpr_64, 1, implicit %7:sgpr_64
; CHECK: An operation can use at most one convergence control token.
; CHECK: SI_CALL %{{[0-9]}}:sgpr_64, 2
%9:sgpr_64 = SI_CALL %8:sgpr_64, 2, implicit %7:sgpr_64, implicit %7:sgpr_64
; CHECK: Cannot mix controlled and uncontrolled convergence in the same function.
; CHECK: SI_CALL %{{[0-9]}}:sgpr_64, 3
%10:sgpr_64 = SI_CALL %8:sgpr_64, 3
...
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