[clang] [llvm] [llvm][AArch64] Do not inline a function with different signing scheme. (PR #80642)

[Nick Desaulniers via cfe-commits]

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@@ -0,0 +1,126 @@
+; Check the inliner doesn't inline a function with different sign return address schemes.
+; RUN: opt < %s -passes=inline -S | FileCheck %s
+
+declare void @init(ptr)
+
+define internal i32 @foo_all() #0 {
+  ret i32 43
+}
+
+define internal i32 @foo_nonleaf() #1 {
+  ret i32 44
+}
+
+define internal i32 @foo_none() #2 {
+  ret i32 42
+}
+
+define internal i32 @foo_lr() #3 {
+  ret i32 45
+}
+
+define internal i32 @foo_bkey() #4 {
+  ret i32 46
+}
+
+define dso_local i32 @bar_all() #0 {
+; CHECK-LABEL: bar_all
+; CHECK-NOT:   call i32 @foo_all()
+; CHECK:       call i32 @foo_nonleaf()
+; CHECK:       call i32 @foo_none()
+; CHECK:       call i32 @foo_lr()
+; CHECK:       call i32 @foo_bkey()
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nickdesaulniers wrote:

Prefer CHECK-NEXT when applicable.

https://github.com/llvm/llvm-project/pull/80642