[llvm] [AMDGPU] Disable dpp src1 sgpr on gfx11 (PR #164241)

[Paul Trojahn via llvm-commits]

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@@ -1,11 +1,13 @@
 ; RUN: llc -mtriple=amdgcn -mcpu=gfx900 < %s | FileCheck %s -check-prefixes=GCN,GFX9GFX10
 ; RUN: llc -mtriple=amdgcn -mcpu=gfx1010 < %s | FileCheck %s -check-prefixes=GCN,GFX9GFX10
 ; RUN: llc -mtriple=amdgcn -mcpu=gfx1100 -mattr=+real-true16 < %s | FileCheck %s -check-prefixes=GCN,GFX11-TRUE16
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ptrojahn wrote:

True16 seems to not fold the sgprs, even on gfx12. This is not a correctness issue, so I just added the checks for Fake16 for now. I'll let the True16 developers know about this.

https://github.com/llvm/llvm-project/pull/164241