commit 08be41adbf6a3671a9ae1fe2927481609121e18f
author Benjamin Kramer <benny.kra@googlemail.com> Thu Nov 08 13:58:10 2012 +0000
committer Benjamin Kramer <benny.kra@googlemail.com> Thu Nov 08 13:58:10 2012 +0000
tree 105a8552f3920619b0e1e8c262248f88e0300129
parent 9b836fb019bb82970464f4e14b36a6e51dbdc7dd

Drop the limitation to IEEE floating point types from the fdiv of pow2 -> fmul transform.

This is safe for x87 long doubles and ppc double doubles too.

llvm-svn: 167582

llvm/unittests/ADT/APFloatTest.cpp

diff --git a/llvm/unittests/ADT/APFloatTest.cpp b/llvm/unittests/ADT/APFloatTest.cpp
index 48d5d83..117b820 100644
--- a/llvm/unittests/ADT/APFloatTest.cpp
+++ b/llvm/unittests/ADT/APFloatTest.cpp
@@ -635,6 +635,12 @@
   EXPECT_TRUE(inv.bitwiseIsEqual(APFloat(0.5)));
   EXPECT_TRUE(APFloat(2.0f).getExactInverse(&inv));
   EXPECT_TRUE(inv.bitwiseIsEqual(APFloat(0.5f)));
+  EXPECT_TRUE(APFloat(APFloat::IEEEquad, "2.0").getExactInverse(&inv));
+  EXPECT_TRUE(inv.bitwiseIsEqual(APFloat(APFloat::IEEEquad, "0.5")));
+  EXPECT_TRUE(APFloat(APFloat::PPCDoubleDouble, "2.0").getExactInverse(&inv));
+  EXPECT_TRUE(inv.bitwiseIsEqual(APFloat(APFloat::PPCDoubleDouble, "0.5")));
+  EXPECT_TRUE(APFloat(APFloat::x87DoubleExtended, "2.0").getExactInverse(&inv));
+  EXPECT_TRUE(inv.bitwiseIsEqual(APFloat(APFloat::x87DoubleExtended, "0.5")));
 
   // FLT_MIN
   EXPECT_TRUE(APFloat(1.17549435e-38f).getExactInverse(&inv));