commit 1513df12ee74aa100b9050a5e6391eba9775e9af
author Dan Gohman <dan433584@gmail.com> Tue Jan 17 21:46:38 2017 +0000
committer Steven Wu <stevenwu@apple.com> Thu Feb 02 17:17:28 2017 -0800
tree ea6c0df096e7970bfbf74ec5fd759cba1dd34f35
parent 7d6e1849b32619242a174183b34e4beeda80ecdb

[WebAssembly] Add minimal support for the new wasm object format triple.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@292269 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Basic/Targets.cpp

diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 1a95ff2..fdedd91 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -8976,11 +8976,19 @@
     return new SPIR64TargetInfo(Triple, Opts);
   }
   case llvm::Triple::wasm32:
-    if (!(Triple == llvm::Triple("wasm32-unknown-unknown")))
+    if (Triple.getSubArch() != llvm::Triple::NoSubArch ||
+        Triple.getVendor() != llvm::Triple::UnknownVendor ||
+        Triple.getOS() != llvm::Triple::UnknownOS ||
+        Triple.getEnvironment() != llvm::Triple::UnknownEnvironment ||
+        !(Triple.isOSBinFormatELF() || Triple.isOSBinFormatWasm()))
       return nullptr;
     return new WebAssemblyOSTargetInfo<WebAssembly32TargetInfo>(Triple, Opts);
   case llvm::Triple::wasm64:
-    if (!(Triple == llvm::Triple("wasm64-unknown-unknown")))
+    if (Triple.getSubArch() != llvm::Triple::NoSubArch ||
+        Triple.getVendor() != llvm::Triple::UnknownVendor ||
+        Triple.getOS() != llvm::Triple::UnknownOS ||
+        Triple.getEnvironment() != llvm::Triple::UnknownEnvironment ||
+        !(Triple.isOSBinFormatELF() || Triple.isOSBinFormatWasm()))
       return nullptr;
     return new WebAssemblyOSTargetInfo<WebAssembly64TargetInfo>(Triple, Opts);
 

lib/CodeGen/BackendUtil.cpp

diff --git a/lib/CodeGen/BackendUtil.cpp b/lib/CodeGen/BackendUtil.cpp
index d2ce6ea..328ac5b 100644
--- a/lib/CodeGen/BackendUtil.cpp
+++ b/lib/CodeGen/BackendUtil.cpp
@@ -996,6 +996,7 @@
     return "__LLVM,__bitcode";
   case Triple::COFF:
   case Triple::ELF:
+  case Triple::Wasm:
   case Triple::UnknownObjectFormat:
     return ".llvmbc";
   }
@@ -1008,6 +1009,7 @@
     return "__LLVM,__cmdline";
   case Triple::COFF:
   case Triple::ELF:
+  case Triple::Wasm:
   case Triple::UnknownObjectFormat:
     return ".llvmcmd";
   }

lib/CodeGen/CodeGenModule.cpp

diff --git a/lib/CodeGen/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp
index 3600543..a6b2559 100644
--- a/lib/CodeGen/CodeGenModule.cpp
+++ b/lib/CodeGen/CodeGenModule.cpp
@@ -3341,6 +3341,7 @@
     llvm_unreachable("unknown file format");
   case llvm::Triple::COFF:
   case llvm::Triple::ELF:
+  case llvm::Triple::Wasm:
     GV->setSection("cfstring");
     break;
   case llvm::Triple::MachO:

lib/CodeGen/ItaniumCXXABI.cpp

diff --git a/lib/CodeGen/ItaniumCXXABI.cpp b/lib/CodeGen/ItaniumCXXABI.cpp
index f7a8dd6..490fadb 100644
--- a/lib/CodeGen/ItaniumCXXABI.cpp
+++ b/lib/CodeGen/ItaniumCXXABI.cpp
@@ -2015,10 +2015,11 @@
 
     // The ABI says: "It is suggested that it be emitted in the same COMDAT
     // group as the associated data object." In practice, this doesn't work for
-    // non-ELF object formats, so only do it for ELF.
+    // non-ELF and non-Wasm object formats, so only do it for ELF and Wasm.
     llvm::Comdat *C = var->getComdat();
     if (!D.isLocalVarDecl() && C &&
-        CGM.getTarget().getTriple().isOSBinFormatELF()) {
+        (CGM.getTarget().getTriple().isOSBinFormatELF() ||
+         CGM.getTarget().getTriple().isOSBinFormatWasm())) {
       guard->setComdat(C);
       // An inline variable's guard function is run from the per-TU
       // initialization function, not via a dedicated global ctor function, so
@@ -3534,8 +3535,9 @@
     return StructorCodegen::RAUW;
 
   if (llvm::GlobalValue::isWeakForLinker(Linkage)) {
-    // Only ELF supports COMDATs with arbitrary names (C5/D5).
-    if (CGM.getTarget().getTriple().isOSBinFormatELF())
+    // Only ELF and wasm support COMDATs with arbitrary names (C5/D5).
+    if (CGM.getTarget().getTriple().isOSBinFormatELF() ||
+        CGM.getTarget().getTriple().isOSBinFormatWasm())
       return StructorCodegen::COMDAT;
     return StructorCodegen::Emit;
   }