[llvm] [DAGCombiner] Lower dynamic insertelt chain more efficiently (PR #162368)

[Craig Topper via llvm-commits]

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@@ -0,0 +1,360 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
+; RUN: llc < %s -mcpu=sm_20 | FileCheck %s
+; RUN: %if ptxas %{ llc < %s -mcpu=sm_20 | %ptxas-verify %}
+target triple = "nvptx64-nvidia-cuda"
+
+; COM: Save the vector to the stack once.
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topperc wrote:

You don't need to write `COM` on a regular comment. COM is just for commenting out what would otherwise be FileCheck directive.

https://github.com/llvm/llvm-project/pull/162368