Use APFloat for the representation of FP immediates, ask the target

for *which* apfloat to use for a particular type.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@42234 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 28 insertions, 0 deletions

diff --git a/Basic/TargetInfo.cpp b/Basic/TargetInfo.cpp
index 1b780108e5..2b0af7ed24 100644
--- a/Basic/TargetInfo.cpp
+++ b/Basic/TargetInfo.cpp
@@ -15,12 +15,40 @@
 #include "clang/Basic/Diagnostic.h"
 #include "clang/AST/Builtins.h"
 #include "llvm/ADT/StringMap.h"
+#include "llvm/ADT/APFloat.h"
 #include <set>
 using namespace clang;
 
 void TargetInfoImpl::ANCHOR() {} // out-of-line virtual method for class.
 
 
+//===----------------------------------------------------------------------===//
+// FIXME: These are temporary hacks, they should revector into the
+// TargetInfoImpl.
+
+void TargetInfo::getFloatInfo(uint64_t &Size, unsigned &Align,
+                              const llvm::fltSemantics *&Format,
+                              SourceLocation Loc) {
+  Align = 32;  // FIXME: implement correctly.
+  Size = 32;
+  Format = &llvm::APFloat::IEEEsingle;
+}
+void TargetInfo::getDoubleInfo(uint64_t &Size, unsigned &Align,
+                               const llvm::fltSemantics *&Format,
+                               SourceLocation Loc) {
+  Size = Align = 64;  // FIXME: implement correctly.
+  Format = &llvm::APFloat::IEEEdouble;
+}
+void TargetInfo::getLongDoubleInfo(uint64_t &Size, unsigned &Align,
+                                   const llvm::fltSemantics *&Format,
+                                   SourceLocation Loc) {
+  Size = 80; Align = 32;  // FIXME: implement correctly.
+  Format = &llvm::APFloat::x87DoubleExtended;
+}
+
+
+//===----------------------------------------------------------------------===//
+
 /// DiagnoseNonPortability - When a use of a non-portable target feature is
 /// used, this method emits the diagnostic and marks the translation unit as
 /// non-portable.