[ELF] - handle of command line options incompatible with -r

Patch handles the command line options
incompatible with relocatable output.

Differential revision: http://reviews.llvm.org/D17758

llvm-svn: 262377

lld/ELF/Driver.cpp

@@ -141,8 +141,15 @@ static void checkOptions(opt::InputArgList &Args) {
   if (Config->EMachine == EM_AMDGPU && !Config->Entry.empty())
     error("-e option is not valid for AMDGPU.");
 
-  if (Config->Relocatable && Config->Shared)
+  if (!Config->Relocatable)
+    return;
+
+  if (Config->Shared)
     error("-r and -shared may not be used together");
+  if (Config->GcSections)
+    error("-r and --gc-sections may not be used together");
+  if (Config->ICF)
+    error("-r and --icf may not be used together");
 }
 
 static StringRef

lld/test/ELF/driver.test

@@ -20,6 +20,23 @@
 # RUN: ld.lld --version 2>&1 | FileCheck -check-prefix=VERSION %s
 # VERSION: LLD
 
+## Attempt to link DSO with -r
+# RUN: ld.lld -shared %t -o %t.so
+# RUN: not ld.lld -r %t.so %t -o %tfail 2>&1 | FileCheck -check-prefix=ERR %s
+# ERR: Attempted static link of dynamic object
+
+## Attempt to use -r and -shared together
+# RUN: not ld.lld -r -shared %t -o %tfail 2>&1 | FileCheck -check-prefix=ERR2 %s
+# ERR2: -r and -shared may not be used together
+
+## Attempt to use -r and --gc-sections together
+# RUN: not ld.lld -r --gc-sections %t -o %tfail 2>&1 | FileCheck -check-prefix=ERR3 %s
+# ERR3: -r and --gc-sections may not be used together
+
+## Attempt to use -r and --icf together
+# RUN: not ld.lld -r --icf=all %t -o %tfail 2>&1 | FileCheck -check-prefix=ERR4 %s
+# ERR4: -r and --icf may not be used together
+
 .globl _start
 _start:
   nop

lld/test/ELF/relocatable.s

@@ -15,15 +15,6 @@
 # RUN: ld.lld -e main %t -o %texec
 # RUN: llvm-readobj -file-headers %texec | FileCheck -check-prefix=CHECKEXE %s
 
-## Attempt to link DSO with -r
-# RUN: ld.lld -shared %t1.o -o %t.so
-# RUN: not ld.lld -r %t.so %t2.o -o %tfail 2>&1 | FileCheck -check-prefix=ERR %s
-# ERR: Attempted static link of dynamic object
-
-## Attempt to use -r and shared together
-# RUN: not ld.lld -r -shared %t2.o -o %tfail 2>&1 | FileCheck -check-prefix=ERR2 %s
-# ERR2: -r and -shared may not be used together
-
 # CHECK:       ElfHeader {
 # CHECK-NEXT:  Ident {
 # CHECK-NEXT:    Magic: (7F 45 4C 46)