[llvm] [AMDGPU] Give some of the VI V_PK_* instructions a subtarget predicate. (PR #70334)

[Ivan Kosarev via llvm-commits]

https://github.com/kosarev created https://github.com/llvm/llvm-project/pull/70334

This resolves AsmParser ambiguity between them and similar instructions for other subtargets, e.g., V_PK_SUB_U16_vi being identical to V_PK_SUB_U16_gfx11 on GFX11.

Part of <https://github.com/llvm/llvm-project/issues/69256>.

>From 6bd1ec437f258924d278eeb3182a106d38ac2253 Mon Sep 17 00:00:00 2001
From: Ivan Kosarev <ivan.kosarev at amd.com>
Date: Thu, 26 Oct 2023 14:15:33 +0100
Subject: [PATCH] [AMDGPU] Give some of the VI V_PK_* instructions a subtarget
 predicate.

This resolves AsmParser ambiguity between them and similar instructions
for other subtargets, e.g., V_PK_SUB_U16_vi being identical to
V_PK_SUB_U16_gfx11 on GFX11.

Part of <https://github.com/llvm/llvm-project/issues/69256>.
---
 llvm/lib/Target/AMDGPU/VOP3PInstructions.td | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/Target/AMDGPU/VOP3PInstructions.td b/llvm/lib/Target/AMDGPU/VOP3PInstructions.td
index 05e68f46b32605d..9c746cda1a4b108 100644
--- a/llvm/lib/Target/AMDGPU/VOP3PInstructions.td
+++ b/llvm/lib/Target/AMDGPU/VOP3PInstructions.td
@@ -1105,6 +1105,7 @@ multiclass VOP3P_Real_SMFMAC<bits<7> op, string alias> {
   def : MnemonicAlias<alias, !cast<VOP3_Pseudo>(NAME#"_e64").Mnemonic>;
 }
 
+let SubtargetPredicate = isGFX8GFX9 in {
 defm V_PK_MAD_I16 : VOP3P_Real_vi <0x00>;
 defm V_PK_MUL_LO_U16 : VOP3P_Real_vi <0x01>;
 defm V_PK_ADD_I16 : VOP3P_Real_vi <0x02>;
@@ -1125,7 +1126,7 @@ defm V_PK_ADD_F16 : VOP3P_Real_vi <0x0f>;
 defm V_PK_MUL_F16 : VOP3P_Real_vi <0x10>;
 defm V_PK_MIN_F16 : VOP3P_Real_vi <0x11>;
 defm V_PK_MAX_F16 : VOP3P_Real_vi <0x12>;
-
+} // End SubtargetPredicate = isGFX8GFX9
 
 let SubtargetPredicate = HasMadMixInsts in {
 defm V_MAD_MIX_F32 : VOP3P_Real_vi <0x20>;