Fix MSVC "not all control paths return a value" warnings. NFC.

RKSimon · RKSimon · commit c0a7dd49118b · 2023-10-16T10:51:01.000+01:00
diff --git a/llvm/lib/Target/AArch64/AArch64PointerAuth.cpp b/llvm/lib/Target/AArch64/AArch64PointerAuth.cpp
@@ -231,6 +231,7 @@ MachineBasicBlock &llvm::AArch64PAuth::checkAuthenticatedRegister(
         .addMBB(BreakBlock);
     return *SuccessBlock;
   }
+  llvm_unreachable("Unknown AuthCheckMethod enum");
 }
 
 unsigned llvm::AArch64PAuth::getCheckerSizeInBytes(AuthCheckMethod Method) {
@@ -244,6 +245,7 @@ unsigned llvm::AArch64PAuth::getCheckerSizeInBytes(AuthCheckMethod Method) {
   case AuthCheckMethod::XPACHint:
     return 20;
   }
+  llvm_unreachable("Unknown AuthCheckMethod enum");
 }
 
 bool AArch64PointerAuth::checkAuthenticatedLR(

Original file line number	Diff line number	Diff line change
`@@ -231,6 +231,7 @@ MachineBasicBlock &llvm::AArch64PAuth::checkAuthenticatedRegister(`
`231`	`231`	`.addMBB(BreakBlock);`
`232`	`232`	`return *SuccessBlock;`
`233`	`233`	`}`
	`234`	`+ llvm_unreachable("Unknown AuthCheckMethod enum");`
`234`	`235`	`}`
`235`	`236`
`236`	`237`	`unsigned llvm::AArch64PAuth::getCheckerSizeInBytes(AuthCheckMethod Method) {`
`@@ -244,6 +245,7 @@ unsigned llvm::AArch64PAuth::getCheckerSizeInBytes(AuthCheckMethod Method) {`
`244`	`245`	`case AuthCheckMethod::XPACHint:`
`245`	`246`	`return 20;`
`246`	`247`	`}`
	`248`	`+ llvm_unreachable("Unknown AuthCheckMethod enum");`
`247`	`249`	`}`
`248`	`250`
`249`	`251`	`bool AArch64PointerAuth::checkAuthenticatedLR(`