commit ce16339930a2b03e53b4e6399ef59c092a7f2cfa
author Dan Gohman <gohman@apple.com> Sat Dec 17 00:04:22 2011 +0000
committer Dan Gohman <gohman@apple.com> Sat Dec 17 00:04:22 2011 +0000
tree 8265888014a73aa5764f99d7b6bb0553066f78bc
parent 2e1b0c0cd9fab8f1841e1039cf39dcceeba70f73

The powers that be have decided that LLVM IR should now support 16-bit
"half precision" floating-point with a first-class type.

This patch adds basic IR support (but not codegen support).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146786 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Bitcode/Reader/BitcodeReader.cpp

diff --git a/lib/Bitcode/Reader/BitcodeReader.cpp b/lib/Bitcode/Reader/BitcodeReader.cpp
index d584015..b86d6e0 100644
--- a/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -565,6 +565,9 @@
     case bitc::TYPE_CODE_VOID:      // VOID
       ResultTy = Type::getVoidTy(Context);
       break;
+    case bitc::TYPE_CODE_HALF:     // HALF
+      ResultTy = Type::getHalfTy(Context);
+      break;
     case bitc::TYPE_CODE_FLOAT:     // FLOAT
       ResultTy = Type::getFloatTy(Context);
       break;
@@ -1032,7 +1035,9 @@
     case bitc::CST_CODE_FLOAT: {    // FLOAT: [fpval]
       if (Record.empty())
         return Error("Invalid FLOAT record");
-      if (CurTy->isFloatTy())
+      if (CurTy->isHalfTy())
+        V = ConstantFP::get(Context, APFloat(APInt(16, (uint16_t)Record[0])));
+      else if (CurTy->isFloatTy())
         V = ConstantFP::get(Context, APFloat(APInt(32, (uint32_t)Record[0])));
       else if (CurTy->isDoubleTy())
         V = ConstantFP::get(Context, APFloat(APInt(64, Record[0])));