[llvm] [ARM] Expose supportsTailCalls in ARMTargetTransformInfo (PR #67932)

[David Green via llvm-commits]

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@@ -0,0 +1,60 @@
+; Test that ARMv6 correctly masks coroutine infrastructure from generating musttail calls
+; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S \
+; RUN:     -mtriple=arm-none-eabi -mcpu=cortex-m0 | FileCheck %s
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davemgreen wrote:

It might be worth having an extra check line for an arch that does support tail calls, to show the difference between the two

https://github.com/llvm/llvm-project/pull/67932