[llvm] [RISCV][GlobalISel] Legalize and select G_ATOMICRMW_ADD instruction (PR #153791)

[Craig Topper via llvm-commits]

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@@ -0,0 +1,118 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -mtriple=riscv32 -mattr=+A -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s
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topperc wrote:

Don't capitalize +A. I'm not even sure that will parse.

https://github.com/llvm/llvm-project/pull/153791