[llvm] [AArch64][BTI] Add BTI at EH entries. (PR #155308)

[Shashi Shankar via llvm-commits]

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@@ -29,9 +29,9 @@ lbl4:
 
 ; CHECK-LABEL: func:
 ; CHECK-NEXT: .seh_proc func
-; CHECK-NEXT: // %bb.0:
-; CHECK-NEXT: hint #34
-; CHECK-NEXT: .seh_nop
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:  .seh_nop
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shashforge wrote:

Done. I now emit the BTI at the first executable instruction and insert the .seh_nop immediately after it when the first real instruction is FrameSetup.

https://github.com/llvm/llvm-project/pull/155308