[ELF] Make -z *-report=unknown error message conventional

Author: MaskRay

lld/ELF/Driver.cpp

@@ -1632,8 +1632,8 @@ static void readConfigs(Ctx &ctx, opt::InputArgList &args) {
         continue;
       arg->claim();
       if (!isValidReportString(option.second)) {
-        ErrAlways(ctx) << "-z " << reportArg.first << "= parameter "
-                       << option.second << " is not recognized";
+        ErrAlways(ctx) << "unknown -z " << reportArg.first
+                       << "= value: " << option.second;
         continue;
       }
       *reportArg.second = option.second;

lld/test/ELF/aarch64-bti-pac-cli-error.s

@@ -13,11 +13,5 @@
 # CHECK-NEXT: error: -z bti-report only supported on AArch64
 # CHECK-NEXT: error: -z pauth-report only supported on AArch64
 
-# RUN: not ld.lld -z bti-report=something -z pauth-report=something \
-# RUN:     %t.o -o /dev/null 2>&1 | FileCheck --check-prefix=REPORT_INVALID %s
-# REPORT_INVALID: error: -z bti-report= parameter something is not recognized
-# REPORT_INVALID: error: -z pauth-report= parameter something is not recognized
-# REPORT_INVALID-EMPTY:
-
         .globl start
 start:  ret

lld/test/ELF/aarch64-feature-bti.s

@@ -258,6 +258,10 @@
 # FORCE-NEXT:           nop
 # FORCE-NEXT:           nop
 
+# RUN: not ld.lld %t.o -z bti-report=u -o /dev/null 2>&1 | FileCheck --check-prefix=REPORT-ERR %s
+# REPORT-ERR: error: unknown -z bti-report= value: u{{$}}
+# REPORT-EMPTY:
+
 .section ".note.gnu.property", "a"
 .long 4
 .long 0x10

lld/test/ELF/aarch64-feature-pauth.s

@@ -83,6 +83,10 @@
 # HINT-NEXT:       br      x17
 # PACPLT-NEXT:     nop
 
+# RUN: not ld.lld tag1.o -z pauth-report=u 2>&1 | FileCheck --check-prefix=REPORT-ERR %s
+# REPORT-ERR:  error: unknown -z pauth-report= value: u{{$}}
+# REPORT-EMPTY:
+
 #--- abi-tag-short.s
 
 .section ".note.gnu.property", "a"

lld/test/ELF/i386-feature-cet.s

@@ -25,7 +25,7 @@
 
 # RUN: not ld.lld -e func1 %t.o %t3.o -o /dev/null -z cet-report=something 2>&1 \
 # RUN:   | FileCheck --check-prefix=REPORT_INVALID %s
-# REPORT_INVALID: error: -z cet-report= parameter something is not recognized
+# REPORT_INVALID: error: unknown -z cet-report= value: something
 # REPORT_INVALID-EMPTY:
 
 # RUN: ld.lld -e func1 %t.o %t3.o -o /dev/null -z cet-report=warning 2>&1 \

lld/test/ELF/x86-64-feature-cet.s

@@ -25,7 +25,7 @@
 
 # RUN:not ld.lld -e func1 %t.o %t3.o -o /dev/null -z cet-report=something 2>&1 \
 # RUN:   | FileCheck --check-prefix=REPORT_INVALID %s
-# REPORT_INVALID: error: -z cet-report= parameter something is not recognized
+# REPORT_INVALID: error: unknown -z cet-report= value: something
 # REPORT_INVALID-EMPTY:
 
 # RUN: ld.lld -e func1 %t.o %t3.o -o /dev/null  -z force-ibt -z cet-report=warning 2>&1 \