Handle PPC long double in CBackend.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42972 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/CBackend/CBackend.cpp b/lib/Target/CBackend/CBackend.cpp
index 343d6d7a5fa8a836304d3f3ceb439e6f2450e786..35205c6edb38e02e4ce8861c62e0062b12707aeb 100644 (file)
--- a/lib/Target/CBackend/CBackend.cpp
+++ b/lib/Target/CBackend/CBackend.cpp
@@ -1505,6 +1505,7 @@ bool CWriter::doInitialization(Module &M) {
       << "typedef unsigned int        ConstantFloatTy;\n"
       << "typedef struct { unsigned long long f1; unsigned short f2; "
          "unsigned short pad[3]; } ConstantFP80Ty;\n"
+      // This is used for both kinds of 128-bit long double; meaning differs.
       << "typedef struct { unsigned long long f1; unsigned long long f2; }"
          " ConstantFP128Ty;\n"
       << "\n\n/* Global Declarations */\n";
@@ -1737,6 +1738,14 @@ void CWriter::printFloatingPointConstants(Function &F) {
               << ((uint16_t)p[1] | (p[0] & 0xffffffffffffLL)<<16)
               << ", 0x" << (uint16_t)(p[0] >> 48) << ",0,0,0"
               << "}; /* Long double constant */\n" << std::dec;
+        } else if (FPC->getType() == Type::PPC_FP128Ty) {
+          APInt api = FPC->getValueAPF().convertToAPInt();
+          const uint64_t *p = api.getRawData();
+          Out << "static const ConstantFP128Ty FPConstant" << FPCounter++
+              << " = { 0x" << std::hex
+              << p[0] << ", 0x" << p[1]
+              << "}; /* Long double constant */\n" << std::dec;
+
         } else
           assert(0 && "Unknown float type!");
       }