[llvm] [HLSL] XFAIL `smoothstep.ll` and `SV_GroupIndex.ll` SPIR-V backend tests (PR #136343)

[Kaitlin Peng via llvm-commits]

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@@ -1,6 +1,9 @@
 ; RUN: llc -O0 -verify-machineinstrs -mtriple=spirv-vulkan-unknown %s -o - | FileCheck %s
 ; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv-vulkan-unknown %s -o - -filetype=obj | spirv-val --target-env vulkan1.3 %}
 
+; TODO: This test currently fails when --target-env vulkan1.3 is specified.
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kmpeng wrote:

Code updated

https://github.com/llvm/llvm-project/pull/136343