[llvm] Account for inline assembly instructions in inlining cost. (PR #146628)

[Mingming Liu via llvm-commits]

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+;; Test to verify that when callee has inline assembly, bumping up `-inline-asm-instr-cost` would block inlining.
+
+; RUN: opt < %s -passes=inline -S | FileCheck %s --check-prefixes=INLINE
+; RUN: opt < %s -passes='cgscc(inline)' -S | FileCheck %s --check-prefixes=INLINE
+; RUN: opt < %s -passes=inline -inline-asm-instr-cost=150 -S | FileCheck %s --check-prefixes=INLINE
+; RUN: opt < %s -passes='cgscc(inline)' -inline-asm-instr-cost=150 -S | FileCheck %s --check-prefixes=INLINE
+; RUN: opt < %s -passes=inline -inline-asm-instr-cost=300 -S | FileCheck %s --check-prefixes=NOINLINE
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mingmingl-llvm wrote:

nit: Add some comment to explain why 150 gives inline and 300 gives noline, like, which existing option(s) implicitly takes effect?  Considering overriding them in the regression test if possible.

https://github.com/llvm/llvm-project/pull/146628