From eed37bad011c8d3843611ecabfaf279eebf68a02 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sat, 30 Apr 2005 03:44:07 +0000
Subject: [PATCH] Add llvm.sqrt intrinsic, patch contributed by Morten Ofstad

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21627 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/Intrinsics.h           |  1 +
 lib/Analysis/BasicAliasAnalysis.cpp |  2 +-
 lib/VMCore/Function.cpp             |  1 +
 lib/VMCore/Verifier.cpp             | 10 ++++++++++
 4 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/include/llvm/Intrinsics.h b/include/llvm/Intrinsics.h
index 569f80a187e..7acd5ca71a3 100644
--- a/include/llvm/Intrinsics.h
+++ b/include/llvm/Intrinsics.h
@@ -63,6 +63,7 @@ namespace Intrinsic {
 
     // libm related functions.
     isunordered,    // Return true if either argument is a NaN
+    sqrt,
 
     // Input/Output intrinsics.
     readport,
diff --git a/lib/Analysis/BasicAliasAnalysis.cpp b/lib/Analysis/BasicAliasAnalysis.cpp
index 7d9e21cb94c..21c6543f754 100644
--- a/lib/Analysis/BasicAliasAnalysis.cpp
+++ b/lib/Analysis/BasicAliasAnalysis.cpp
@@ -702,7 +702,7 @@ namespace {
 static const char *DoesntAccessMemoryTable[] = {
   // LLVM intrinsics:
   "llvm.frameaddress", "llvm.returnaddress", "llvm.readport",
-  "llvm.isunordered",
+  "llvm.isunordered", "llvm.sqrt",
 
   "abs", "labs", "llabs", "imaxabs", "fabs", "fabsf", "fabsl",
   "trunc", "truncf", "truncl", "ldexp",
diff --git a/lib/VMCore/Function.cpp b/lib/VMCore/Function.cpp
index 2672e892c74..6740c6bbb0d 100644
--- a/lib/VMCore/Function.cpp
+++ b/lib/VMCore/Function.cpp
@@ -245,6 +245,7 @@ unsigned Function::getIntrinsicID() const {
     if (getName() == "llvm.setjmp")     return Intrinsic::setjmp;
     if (getName() == "llvm.sigsetjmp")  return Intrinsic::sigsetjmp;
     if (getName() == "llvm.siglongjmp") return Intrinsic::siglongjmp;
+    if (getName() == "llvm.sqrt")       return Intrinsic::sqrt;
     break;
   case 'v':
     if (getName() == "llvm.va_copy")  return Intrinsic::vacopy;
diff --git a/lib/VMCore/Verifier.cpp b/lib/VMCore/Verifier.cpp
index da14c00065e..d7b8f509621 100644
--- a/lib/VMCore/Verifier.cpp
+++ b/lib/VMCore/Verifier.cpp
@@ -723,6 +723,16 @@ void Verifier::visitIntrinsicFunctionCall(Intrinsic::ID ID, CallInst &CI) {
     NumArgs = 2;
     break;
 
+  case Intrinsic::sqrt:
+    Assert1(FT->getNumParams() == 1,
+            "Illegal # arguments for intrinsic function!", IF);
+    Assert1(FT->getParamType(0)->isFloatingPoint(),
+            "Argument is not a floating point type!", IF);
+    Assert1(FT->getReturnType() == FT->getParamType(0),
+            "Return type is not the same as argument type!", IF);
+    NumArgs = 1;
+    break;
+
   case Intrinsic::setjmp:          NumArgs = 1; break;
   case Intrinsic::longjmp:         NumArgs = 2; break;
   case Intrinsic::sigsetjmp:       NumArgs = 2; break;
-- 
2.34.1