[PATCH] D26701: [WebAssembly] Add triple support for the new wasm object format

[Dan Gohman via Phabricator via llvm-commits]

sunfish updated this revision to Diff 80194.
sunfish added a comment.

- rebase on trunk
- move the default object format for wasm32 and wasm64 back to ELF for now (it can be overridden by an explicit triple)


Repository:
  rL LLVM

https://reviews.llvm.org/D26701

Files:
  include/llvm/ADT/Triple.h
  lib/ProfileData/InstrProf.cpp
  lib/Support/Triple.cpp
  lib/Transforms/Instrumentation/AddressSanitizer.cpp


Index: lib/Transforms/Instrumentation/AddressSanitizer.cpp
===================================================================
--- lib/Transforms/Instrumentation/AddressSanitizer.cpp
+++ lib/Transforms/Instrumentation/AddressSanitizer.cpp
@@ -1696,7 +1696,8 @@
     GlobalValue *InstrumentedGlobal = NewGlobal;
 
     bool CanUsePrivateAliases =
-        TargetTriple.isOSBinFormatELF() || TargetTriple.isOSBinFormatMachO();
+        TargetTriple.isOSBinFormatELF() || TargetTriple.isOSBinFormatMachO() ||
+        TargetTriple.isOSBinFormatWasm();
     if (CanUsePrivateAliases && ClUsePrivateAliasForGlobals) {
       // Create local alias for NewGlobal to avoid crash on ODR between
       // instrumented and non-instrumented libraries.
Index: lib/Support/Triple.cpp
===================================================================
--- lib/Support/Triple.cpp
+++ lib/Support/Triple.cpp
@@ -510,6 +510,7 @@
     .EndsWith("coff", Triple::COFF)
     .EndsWith("elf", Triple::ELF)
     .EndsWith("macho", Triple::MachO)
+    .EndsWith("wasm", Triple::Wasm)
     .Default(Triple::UnknownObjectFormat);
 }
 
@@ -581,6 +582,7 @@
   case Triple::COFF: return "coff";
   case Triple::ELF: return "elf";
   case Triple::MachO: return "macho";
+  case Triple::Wasm: return "wasm";
   }
   llvm_unreachable("unknown object format type");
 }
Index: lib/ProfileData/InstrProf.cpp
===================================================================
--- lib/ProfileData/InstrProf.cpp
+++ lib/ProfileData/InstrProf.cpp
@@ -791,7 +791,7 @@
     return true;
 
   Triple TT(M.getTargetTriple());
-  if (!TT.isOSBinFormatELF())
+  if (!TT.isOSBinFormatELF() && !TT.isOSBinFormatWasm())
     return false;
 
   // See createPGOFuncNameVar for more details. To avoid link errors, profile
Index: include/llvm/ADT/Triple.h
===================================================================
--- include/llvm/ADT/Triple.h
+++ include/llvm/ADT/Triple.h
@@ -206,6 +206,7 @@
     COFF,
     ELF,
     MachO,
+    Wasm,
   };
 
 private:
@@ -576,6 +577,11 @@
     return getObjectFormat() == Triple::MachO;
   }
 
+  /// Tests whether the OS uses the Wasm binary format.
+  bool isOSBinFormatWasm() const {
+    return getObjectFormat() == Triple::Wasm;
+  }
+
   /// Tests whether the target is the PS4 CPU
   bool isPS4CPU() const {
     return getArch() == Triple::x86_64 &&


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