[LLD][ELF] - Improve diagnostic about unrecognized relocations.

This is a minor improvement inspired by https://bugs.llvm.org/show_bug.cgi?id=38303.

A person reported that he observed message complaining about unsupported R_ARM_V4BX:
error: can't create dynamic relocation R_ARM_V4BX against local symbol in readonly segment; recompile object files with -fPIC

But with -z notext he only saw a relocation number, what is not convenient:
error: ../../gfx/cairo/libpixman/src/pixman-arm-neon-asm-bilinear.o:(.text+0x4F0): unrecognized reloc 40

Also, in the error messages we use relocation but not reloc.

With this patch we start to print one of the following messages:
error: file.o: unrecognized relocation Unknown(999)
error: file.o: unrecognized relocation R_X_KNOWN_BY_LLVM_BUT_UNSUPPORTED_BY_LLD_NAME

There is no way to write a test for that I believe.

Differential revision: https://reviews.llvm.org/D62237

llvm-svn: 361472

Author: George Rimar

lld/ELF/Arch/AArch64.cpp

@@ -350,7 +350,7 @@ void AArch64::relocateOne(uint8_t *Loc, RelType Type, uint64_t Val) const {
     or32AArch64Imm(Loc, Val);
     break;
   default:
-    error(getErrorLocation(Loc) + "unrecognized reloc " + Twine(Type));
+    error(getErrorLocation(Loc) + "unrecognized relocation " + toString(Type));
   }
 }
 

lld/ELF/Arch/ARM.cpp

@@ -518,7 +518,7 @@ void ARM::relocateOne(uint8_t *Loc, RelType Type, uint64_t Val) const {
                   (Val & 0x00ff));           // imm8
     break;
   default:
-    error(getErrorLocation(Loc) + "unrecognized reloc " + Twine(Type));
+    error(getErrorLocation(Loc) + "unrecognized relocation " + toString(Type));
   }
 }
 

lld/ELF/Arch/AVR.cpp

@@ -66,7 +66,7 @@ void AVR::relocateOne(uint8_t *Loc, RelType Type, uint64_t Val) const {
     break;
   }
   default:
-    error(getErrorLocation(Loc) + "unrecognized reloc " + toString(Type));
+    error(getErrorLocation(Loc) + "unrecognized relocation " + toString(Type));
   }
 }
 

lld/ELF/Arch/Hexagon.cpp

@@ -246,7 +246,7 @@ void Hexagon::relocateOne(uint8_t *Loc, RelType Type, uint64_t Val) const {
     or32le(Loc, applyMask(0x00c03fff, Val));
     break;
   default:
-    error(getErrorLocation(Loc) + "unrecognized reloc " + toString(Type));
+    error(getErrorLocation(Loc) + "unrecognized relocation " + toString(Type));
     break;
   }
 }

lld/ELF/Arch/MSP430.cpp

@@ -83,7 +83,7 @@ void MSP430::relocateOne(uint8_t *Loc, RelType Type, uint64_t Val) const {
     break;
   }
   default:
-    error(getErrorLocation(Loc) + "unrecognized reloc " + toString(Type));
+    error(getErrorLocation(Loc) + "unrecognized relocation " + toString(Type));
   }
 }
 

lld/ELF/Arch/PPC.cpp

@@ -69,7 +69,7 @@ void PPC::relocateOne(uint8_t *Loc, RelType Type, uint64_t Val) const {
     write32be(Loc, read32be(Loc) | (Val & 0x3FFFFFC));
     break;
   default:
-    error(getErrorLocation(Loc) + "unrecognized reloc " + Twine(Type));
+    error(getErrorLocation(Loc) + "unrecognized relocation " + toString(Type));
   }
 }
 

lld/ELF/Arch/PPC64.cpp

@@ -860,7 +860,7 @@ void PPC64::relocateOne(uint8_t *Loc, RelType Type, uint64_t Val) const {
     write64(Loc, Val - DynamicThreadPointerOffset);
     break;
   default:
-    error(getErrorLocation(Loc) + "unrecognized reloc " + Twine(Type));
+    error(getErrorLocation(Loc) + "unrecognized relocation " + toString(Type));
   }
 }