From 84593f058b97d6470156e68841cfacee48af39a7 Mon Sep 17 00:00:00 2001
From: Sam Parker <sam.parker@arm.com>
Date: Wed, 11 Dec 2019 16:12:58 +0000
Subject: [ARM][MVE] Make VPT invalid for tail predication

We've been marking VPT incompatible instructions as invalid for tail
predication too, though this may not strictly be true. VPT are
incompatible and, unless its the first predicate def in a loop,
they shouldn't be compatible for tail predication either.

Differential Revision: https://reviews.llvm.org/D71410
---
 llvm/lib/Target/ARM/ARMInstrMVE.td | 3 ---
 1 file changed, 3 deletions(-)

(limited to 'llvm/lib/Target')

diff --git a/llvm/lib/Target/ARM/ARMInstrMVE.td b/llvm/lib/Target/ARM/ARMInstrMVE.td
index a40231c4aa1..82a622d799a 100644
--- a/llvm/lib/Target/ARM/ARMInstrMVE.td
+++ b/llvm/lib/Target/ARM/ARMInstrMVE.td
@@ -5394,7 +5394,6 @@ class MVE_VPT<string suffix, bits<2> size, dag iops, string asm, list<dag> patte
   let Inst{4} = 0b0;
 
   let Defs = [VPR];
-  let validForTailPredication = 1;
 }
 
 class MVE_VPTt1<string suffix, bits<2> size, dag iops>
@@ -5406,7 +5405,6 @@ class MVE_VPTt1<string suffix, bits<2> size, dag iops>
   let Inst{5} = Qm{3};
   let Inst{3-1} = Qm{2-0};
   let Inst{0} = fc{1};
-  let validForTailPredication = 1;
 }
 
 class MVE_VPTt1i<string suffix, bits<2> size>
@@ -5508,7 +5506,6 @@ class MVE_VPTf<string suffix, bit size, dag iops, string asm, list<dag> pattern=
 
   let Defs = [VPR];
   let Predicates = [HasMVEFloat];
-  let validForTailPredication = 1;
 }
 
 class MVE_VPTft1<string suffix, bit size>
-- 
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