From 1f86498f9356864881356f4c6815d31e1bdeddb7 Mon Sep 17 00:00:00 2001
From: Dale Johannesen <dalej@apple.com>
Date: Wed, 21 Jan 2009 20:32:55 +0000
Subject: Do not use host floating point types when emitting ASCII IR; loading
 and storing these can change the bits of NaNs on some hosts.  Remove or add
 warnings at a few other places using host floating point; this is a bad thing
 to do in general.

llvm-svn: 62712
---
 llvm/lib/Support/APFloat.cpp    | 3 ++-
 llvm/lib/Support/FoldingSet.cpp | 6 ------
 2 files changed, 2 insertions(+), 7 deletions(-)

(limited to 'llvm/lib/Support')

diff --git a/llvm/lib/Support/APFloat.cpp b/llvm/lib/Support/APFloat.cpp
index c296770385f..d8d414d7ea5 100644
--- a/llvm/lib/Support/APFloat.cpp
+++ b/llvm/lib/Support/APFloat.cpp
@@ -599,7 +599,8 @@ APFloat::copySignificand(const APFloat &rhs)
 }
 
 /* Make this number a NaN, with an arbitrary but deterministic value
-   for the significand.  */
+   for the significand.  If double or longer, this is a signalling NaN,
+   which may not be ideal. */
 void
 APFloat::makeNaN(void)
 {
diff --git a/llvm/lib/Support/FoldingSet.cpp b/llvm/lib/Support/FoldingSet.cpp
index d2b02f240c9..3a1a0cd842e 100644
--- a/llvm/lib/Support/FoldingSet.cpp
+++ b/llvm/lib/Support/FoldingSet.cpp
@@ -61,12 +61,6 @@ void FoldingSetNodeID::AddInteger(unsigned long long I) {
   if ((uint64_t)(int)I != I)
     Bits.push_back(unsigned(I >> 32));
 }
-void FoldingSetNodeID::AddFloat(float F) {
-  Bits.push_back(FloatToBits(F));
-}
-void FoldingSetNodeID::AddDouble(double D) {
- AddInteger(DoubleToBits(D));
-}
 
 void FoldingSetNodeID::AddString(const char *String) {
   unsigned Size = static_cast<unsigned>(strlen(String));
-- 
cgit v1.2.3