[llvm] "[bolt][aarch64] Fixed indirect call instrumentation snippet" (PR #141918)

[Paschalis Mpeis via llvm-commits]

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@@ -2472,30 +2516,44 @@ class AArch64MCPlusBuilder : public MCPlusBuilder {
     //   ldr     x30, [sp], #16
     //   b       IndCallHandler
     InstructionListType Insts;
+
     Insts.emplace_back();
-    createPushRegisters(Insts.back(), AArch64::X0, AArch64::X1);
+    createPushRegisters(Insts.back(), getIntArgRegister(0),
+                        getIntArgRegister(1));
+
     Insts.emplace_back();
     getSystemFlag(Insts.back(), getIntArgRegister(1));
+
+    Insts.emplace_back();
+    storeReg(Insts.back(), getIntArgRegister(1), getSpRegister(/*Size*/ 8));
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paschalis-mpeis wrote:

Should the 'Code sequence'  at the beginning of the function be edited to accommodate this change here (between mrs and expanded adr)?

Also a nit, since you modified this function: may fix typo on line [L2506](https://github.com/llvm/llvm-project/pull/141918/files#diff-79a437ac4fd4f32fe9c0862fd8ae746d4573029d163f1b97fd7ac46c92e2c2d7R2506):
`InstrTampoline` -> `InstrTrampoline`

https://github.com/llvm/llvm-project/pull/141918