[WebAssembly] Set MaxAtomicInlineWidth to 64.

The WebAssembly threads proposal has changed such that C++
implementations can now declare that atomics up to 64 bits are
"lock free" in C++'s terms.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@304859 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index bb8d81858adaf24fd2e34597bd6d7cb0997be977..f939bfb339afd4b8ec8629a9755c3fd197bf4080 100644 (file)
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -8476,7 +8476,7 @@ public:
   explicit WebAssembly32TargetInfo(const llvm::Triple &T,
                                    const TargetOptions &Opts)
       : WebAssemblyTargetInfo(T, Opts) {
-    MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 32;
+    MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64;
     resetDataLayout("e-m:e-p:32:32-i64:64-n32:64-S128");
   }
 

diff --git a/test/Preprocessor/init.c b/test/Preprocessor/init.c
index 36ef9b213658e7244177c9261abb1acbd600cd9c..494a78e38b94f6de1e440e8e304de60a844dbf9e 100644 (file)
--- a/test/Preprocessor/init.c
+++ b/test/Preprocessor/init.c
@@ -8851,7 +8851,7 @@
 // WEBASSEMBLY32-NEXT:#define __CLANG_ATOMIC_CHAR32_T_LOCK_FREE 2
 // WEBASSEMBLY32-NEXT:#define __CLANG_ATOMIC_CHAR_LOCK_FREE 2
 // WEBASSEMBLY32-NEXT:#define __CLANG_ATOMIC_INT_LOCK_FREE 2
-// WEBASSEMBLY32-NEXT:#define __CLANG_ATOMIC_LLONG_LOCK_FREE 1
+// WEBASSEMBLY32-NEXT:#define __CLANG_ATOMIC_LLONG_LOCK_FREE 2
 // WEBASSEMBLY32-NEXT:#define __CLANG_ATOMIC_LONG_LOCK_FREE 2
 // WEBASSEMBLY32-NEXT:#define __CLANG_ATOMIC_POINTER_LOCK_FREE 2
 // WEBASSEMBLY32-NEXT:#define __CLANG_ATOMIC_SHORT_LOCK_FREE 2
@@ -8895,7 +8895,7 @@
 // WEBASSEMBLY32-NEXT:#define __GCC_ATOMIC_CHAR32_T_LOCK_FREE 2
 // WEBASSEMBLY32-NEXT:#define __GCC_ATOMIC_CHAR_LOCK_FREE 2
 // WEBASSEMBLY32-NEXT:#define __GCC_ATOMIC_INT_LOCK_FREE 2
-// WEBASSEMBLY32-NEXT:#define __GCC_ATOMIC_LLONG_LOCK_FREE 1
+// WEBASSEMBLY32-NEXT:#define __GCC_ATOMIC_LLONG_LOCK_FREE 2
 // WEBASSEMBLY32-NEXT:#define __GCC_ATOMIC_LONG_LOCK_FREE 2
 // WEBASSEMBLY32-NEXT:#define __GCC_ATOMIC_POINTER_LOCK_FREE 2
 // WEBASSEMBLY32-NEXT:#define __GCC_ATOMIC_SHORT_LOCK_FREE 2