e42e97a4ad
VG is only used/defined when changing the streaming mode, using 'smstart sm' or plainly 'smstart' (same for smstop).
25 lines
773 B
LLVM
25 lines
773 B
LLVM
; RUN: llc -mattr=+sme -stop-after=finalize-isel < %s | FileCheck %s
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target triple = "aarch64"
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; Check that we don't define VG for 'smstart za' and 'smstop za'
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define void @smstart_za() "aarch64_new_za" nounwind {
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; CHECK-LABEL: name: smstart_za
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; CHECK-NOT: implicit-def {{[^,]*}}$vg
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ret void
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}
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; Check that we do define VG for 'smstart sm' and 'smstop sm'
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define void @smstart_sm() nounwind {
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; CHECK-LABEL: name: smstart_sm
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; CHECK: MSRpstatesvcrImm1 1, 1,
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; CHECK-SAME: implicit-def {{[^,]*}}$vg
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; CHECK: MSRpstatesvcrImm1 1, 0,
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; CHECK-SAME: implicit-def {{[^,]*}}$vg
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call void @require_sm()
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ret void
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}
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declare void @require_sm() "aarch64_pstate_sm_enabled"
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declare void @require_za() "aarch64_inout_za"
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