[llvm] [AMDGPU] BackOffBarrier feature added to gfx1250; Removed incorrect "DS Store drain" check. (PR #179818)

[via llvm-commits]

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@@ -1941,6 +1941,7 @@ def FeatureISAVersion12 : FeatureSet<
 def FeatureISAVersion12_50_Common : FeatureSet<
   [FeatureGFX12,
    FeatureGFX1250Insts,
+   FeatureBackOffBarrier,
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hidekisaito wrote:

Based on git annotate, looking at the tests touched by the following commits (or prior if any of these are cosmetic) should be sufficient. Working on it.

69447d6afe702   (Austin Kerbow  2023-08-01 17:51:59 -0700       1633)     FeatureBackOffBarrier,
69447d6afe702   (Austin Kerbow  2023-08-01 17:51:59 -0700       1676)   FeatureBackOffBarrier,
b6b6c8d2d7131   (  pvanhout     2023-06-27 10:34:06 +0200       1726)   FeatureBackOffBarrier]>;
d6edc1a96f6ba   (Pierre van Houtryve    2025-09-02 09:37:43 +0200       1800)   FeatureBackOffBarrier,
d6edc1a96f6ba   (Pierre van Houtryve    2025-09-02 09:37:43 +0200       1886)   FeatureBackOffBarrier,


https://github.com/llvm/llvm-project/pull/179818