[llvm] [AMDGPU] Reject SDWA forms the subtarget cannot encode (PR #218592)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,40 @@
+# RUN: llc -mtriple=amdgpu8.03 -run-pass=si-peephole-sdwa -verify-machineinstrs -o - %s | FileCheck %s
+# RUN: llc -mtriple=amdgpu9 -run-pass=si-peephole-sdwa -verify-machineinstrs -o - %s | FileCheck %s
+# RUN: llc -mtriple=amdgpu10.10 -run-pass=si-peephole-sdwa -verify-machineinstrs -o - %s | FileCheck %s
+
+# V_MOVRELS_B32_sdwa is unencodable on gfx8/gfx9, and asm-only
+# (SIInstrInfo::isAsmOnlyOpcode) on gfx10.
+
+---
+name: movrels_dst_no_sdwa
+tracksRegLiveness: true
+body: |
+  bb.0:
+    liveins: $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7, $sgpr0
+
+    ; CHECK-LABEL: name: movrels_dst_no_sdwa
+    ; CHECK: V_MOVRELS_B32_e32
+    ; CHECK-NOT: V_MOVRELS_B32_sdwa
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arsenm wrote:

Avoid -NOT checks, use update_mir_test_checks 

https://github.com/llvm/llvm-project/pull/218592