[PowerPC] Support powerpc64le as a syntax-checking target.
This patch provides basic support for powerpc64le as an LLVM target.
However, use of this target will not actually generate little-endian
code. Instead, use of the target will cause the correct little-endian
built-in defines to be generated, so that code that tests for
__LITTLE_ENDIAN__, for example, will be correctly parsed for
syntax-only testing. Code generation will otherwise be the same as
powerpc64 (big-endian), for now.
The patch leaves open the possibility of creating a little-endian
PowerPC64 back end, but there is no immediate intent to create such a
thing.
The LLVM portions of this patch simply add ppc64le coverage everywhere
that ppc64 coverage currently exists. There is nothing of any import
worth testing until such time as little-endian code generation is
implemented. In the corresponding Clang patch, there is a new test
case variant to ensure that correct built-in defines for little-endian
code are generated.
llvm-svn: 187179
diff --git a/llvm/lib/Target/PowerPC/PPCSubtarget.h b/llvm/lib/Target/PowerPC/PPCSubtarget.h
index 50af75d..3f3fc0e 100644
--- a/llvm/lib/Target/PowerPC/PPCSubtarget.h
+++ b/llvm/lib/Target/PowerPC/PPCSubtarget.h
@@ -89,6 +89,7 @@
bool IsBookE;
bool HasLazyResolverStubs;
bool IsJITCodeModel;
+ bool IsLittleEndian;
/// TargetTriple - What processor and OS we're targeting.
Triple TargetTriple;
@@ -166,6 +167,9 @@
// isJITCodeModel - True if we're generating code for the JIT
bool isJITCodeModel() const { return IsJITCodeModel; }
+ // isLittleEndian - True if generating little-endian code
+ bool isLittleEndian() const { return IsLittleEndian; }
+
// Specific obvious features.
bool hasFSQRT() const { return HasFSQRT; }
bool hasFRE() const { return HasFRE; }