[ARM] Added support for FENV_ACCESS pragma on hard-float ARM platforms. Also changes were made to clang/test/Parser/pragma-fp-warn.c so that for thumbv7a only the soft-float-abi target case is checked.

Author: Varnike

clang/lib/Basic/Targets/ARM.cpp

@@ -364,6 +364,8 @@ ARMTargetInfo::ARMTargetInfo(const llvm::Triple &Triple,
                            : "\01mcount";
 
   SoftFloatABI = llvm::is_contained(Opts.FeaturesAsWritten, "+soft-float-abi");
+  if (!SoftFloatABI)
+    HasStrictFP = true;
 }
 
 StringRef ARMTargetInfo::getABI() const { return ABI; }

clang/test/Parser/pragma-fp-warn.c

@@ -1,6 +1,6 @@
 
 // RUN: %clang_cc1 -triple wasm32 -fsyntax-only -Wno-unknown-pragmas -Wignored-pragmas -verify %s
-// RUN: %clang_cc1 -triple thumbv7 -fsyntax-only -Wno-unknown-pragmas -Wignored-pragmas -verify %s
+// RUN: %clang_cc1 -triple thumbv7 -fsyntax-only -target-feature +soft-float-abi  -Wno-unknown-pragmas -Wignored-pragmas -verify %s
 // RUN: %clang_cc1 -DEXPOK -triple aarch64 -fsyntax-only -Wno-unknown-pragmas -Wignored-pragmas -verify %s
 // RUN: %clang_cc1 -DEXPOK -triple x86_64 -fsyntax-only -Wno-unknown-pragmas -Wignored-pragmas -verify %s
 // RUN: %clang_cc1 -DEXPOK -triple systemz -fsyntax-only -Wno-unknown-pragmas -Wignored-pragmas -verify %s