derek.holloway
7502bf64a4
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53 lines
1.4 KiB
YAML
53 lines
1.4 KiB
YAML
# RUN: not --crash llc -mtriple=amdgcn -run-pass=none -verify-machineinstrs -filetype=null %s 2>&1 | FileCheck %s
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---
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name: cycles
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body: |
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bb.0:
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%0:sgpr_64 = CONVERGENCECTRL_ANCHOR
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%1:sgpr_64 = IMPLICIT_DEF
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S_CBRANCH_EXECZ %bb.9, implicit $exec
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S_BRANCH %bb.1
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bb.1:
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S_CBRANCH_EXECZ %bb.8, implicit $exec
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S_BRANCH %bb.5
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bb.2:
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S_CBRANCH_EXECZ %bb.3, implicit $exec
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S_BRANCH %bb.4
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bb.3:
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; CHECK: Cycle heart must dominate all blocks in the cycle.
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; Irreducible cycle: entries(bb.4 bb.3)
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%3:sgpr_64 = CONVERGENCECTRL_LOOP %0:sgpr_64
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S_BRANCH %bb.4
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bb.4:
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S_BRANCH %bb.3
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bb.5:
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S_CBRANCH_EXECZ %bb.6, implicit $exec
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S_BRANCH %bb.2
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bb.6:
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S_BRANCH %bb.7
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bb.7:
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; CHECK: Cycle heart must dominate all blocks in the cycle.
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; Reducible cycle: entries(bb.6) bb.7
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%4:sgpr_64 = CONVERGENCECTRL_LOOP %0:sgpr_64
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S_BRANCH %bb.6
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bb.8:
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; CHECK: Two static convergence token uses in a cycle that does not contain either token's definition.
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%5:sgpr_64 = CONVERGENCECTRL_LOOP %0:sgpr_64
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%6:sgpr_64 = CONVERGENCECTRL_LOOP %0:sgpr_64
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S_BRANCH %bb.8
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bb.9:
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; CHECK: Convergence token used by an instruction other than llvm.experimental.convergence.loop in a cycle that does not contain the token's definition.
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%7:sgpr_64 = G_SI_CALL %1:sgpr_64, 3, implicit %0:sgpr_64
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S_BRANCH %bb.9
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...
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