[clang] [RISCV][FMV] Remove support for negative priority (PR #112161)

[Piyou Chen via cfe-commits]

================
@@ -111,3 +111,9 @@ __attribute__((target_version("default"))) int 
invalidVerson4(void) { return 2;
 __attribute__((target_version("priority=1"))) int prioriyWithoutArch(void) { 
return 2; }
 // expected-error@+1 {{redefinition of 'prioriyWithoutArch'}}
 __attribute__((target_version("default"))) int prioriyWithoutArch(void) { 
return 2; }
+
+// expected-warning@+2 {{unsupported '-1' in the 'target_version' attribute 
string; 'target_version' attribute ignored}}
----------------
BeMg wrote:

I plan to create another PR to make the warning messages consistent.


https://github.com/llvm/llvm-project/pull/112161
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