[clang] [llvm] [AMDGPU] Add initial support for VGPR as memory (PR #205435)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,58 @@
+; RUN: llc -O2 -mtriple=amdgcn -mcpu=gfx1200 < %s | FileCheck %s
+; RUN: llc -O2 -mtriple=amdgcn -mcpu=gfx1200 -verify-machineinstrs < %s -o /dev/null
+
+; "VGPR as memory" objects (allocas in addrspace(13)) accessed at constant
+; indices must lower to register copies, never to scratch/buffer memory traffic.
+
+; CHECK-LABEL: store_load_i32:
+; CHECK-NOT: scratch_
+; CHECK-NOT: buffer_
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arsenm wrote:

Generate checks 

https://github.com/llvm/llvm-project/pull/205435