Introduce new CORJIT_FLAGS type

The "JIT flags" currently passed between the EE and the JIT have traditionally
been bit flags in a 32-bit word. Recently, a second 32-bit word was added to
accommodate additional flags, but that set of flags is definitely "2nd class":
they are not universally passed, and require using a separate set of bit
definitions, and comparing those bits against the proper, 2nd word.

This change replaces all uses of bare DWORD or 'unsigned int' types
representing flags with CORJIT_FLAGS, which is now an opaque type. All
flag names were renamed from CORJIT_FLG_* to CORJIT_FLAG_* to ensure all
cases were changed to use the new names, which are also scoped within the
CORJIT_FLAGS type itself.

Another motivation to do this, besides cleaner code, is to allow enabling the
SSE/AVX flags for x86. For x86, we had fewer bits available in the "first
word", so would have to either put them in the "second word", which, as
stated, was very much 2nd class and not plumbed through many usages, or
we could move other bits to the "second word", with the same issues. Neither
was a good option.

RyuJIT compiles with both COR_JIT_EE_VERSION > 460 and <= 460. I introduced
a JitFlags adapter class in jitee.h to handle both JIT flag types. All JIT
code uses this JitFlags type, which operates identically to the new
CORJIT_FLAGS type.

In addition to introducing the new CORJIT_FLAGS type, the SSE/AVX flags are
enabled for x86.

The JIT-EE interface GUID is changed, as this is a breaking change.

2 files changed, 3 insertions, 3 deletions

diff --git a/src/ToolBox/superpmi/superpmi-shim-simple/icorjitcompiler.cpp b/src/ToolBox/superpmi/superpmi-shim-simple/icorjitcompiler.cpp
index f6fceb2029..ec266e164f 100644
--- a/src/ToolBox/superpmi/superpmi-shim-simple/icorjitcompiler.cpp
+++ b/src/ToolBox/superpmi/superpmi-shim-simple/icorjitcompiler.cpp
@@ -48,7 +48,7 @@ void interceptor_ICJC::getVersionIdentifier(GUID* versionIdentifier /* OUT */)
     original_ICorJitCompiler->getVersionIdentifier(versionIdentifier);
 }
 
-unsigned interceptor_ICJC::getMaxIntrinsicSIMDVectorLength(DWORD cpuCompileFlags)
+unsigned interceptor_ICJC::getMaxIntrinsicSIMDVectorLength(CORJIT_FLAGS cpuCompileFlags)
 {
     return original_ICorJitCompiler->getMaxIntrinsicSIMDVectorLength(cpuCompileFlags);
 }
diff --git a/src/ToolBox/superpmi/superpmi-shim-simple/icorjitinfo.cpp b/src/ToolBox/superpmi/superpmi-shim-simple/icorjitinfo.cpp
index 89b19d8754..4d145f6a41 100644
--- a/src/ToolBox/superpmi/superpmi-shim-simple/icorjitinfo.cpp
+++ b/src/ToolBox/superpmi/superpmi-shim-simple/icorjitinfo.cpp
@@ -876,7 +876,7 @@ bool interceptor_ICJI::isFieldStatic(CORINFO_FIELD_HANDLE fldHnd)
 // in the code are.  The native compiler will ensure that these places
 // have a corresponding break point in native code.
 //
-// Note that unless CORJIT_FLG_DEBUG_CODE is specified, this function will
+// Note that unless CORJIT_FLAG_DEBUG_CODE is specified, this function will
 // be used only as a hint and the native compiler should not change its
 // code generation.
 void interceptor_ICJI::getBoundaries(
@@ -912,7 +912,7 @@ void interceptor_ICJI::setBoundaries(
 // under debugging, the JIT needs to keep them live over their
 // entire scope so that they can be inspected.
 //
-// Note that unless CORJIT_FLG_DEBUG_CODE is specified, this function will
+// Note that unless CORJIT_FLAG_DEBUG_CODE is specified, this function will
 // be used only as a hint and the native compiler should not change its
 // code generation.
 void interceptor_ICJI::getVars(