From 0116ea34e1308a233e406a5d26f09217a69a5ed6 Mon Sep 17 00:00:00 2001
From: Stephane Marchesin <marchesin@icps.u-strasbg.fr>
Date: Sun, 28 Sep 2008 19:48:26 +0200
Subject: Gallivm: more instructions.

---
 src/gallium/auxiliary/gallivm/instructions.cpp | 61 ++++++++++++++++++++++++--
 1 file changed, 58 insertions(+), 3 deletions(-)

(limited to 'src/gallium/auxiliary/gallivm/instructions.cpp')

diff --git a/src/gallium/auxiliary/gallivm/instructions.cpp b/src/gallium/auxiliary/gallivm/instructions.cpp
index 5fdfe09d18..3eaf9aacf6 100644
--- a/src/gallium/auxiliary/gallivm/instructions.cpp
+++ b/src/gallium/auxiliary/gallivm/instructions.cpp
@@ -163,9 +163,18 @@ void Instructions::cal(int label, llvm::Value *input)
    m_builder.CreateCall(func, params.begin(), params.end());
 }
 
+llvm::Value * Instructions::ceil(llvm::Value *in)
+{
+   std::vector<llvm::Value*> vec = extractVector(in);
+   return vectorFromVals(callCeil(vec[0]), callCeil(vec[1]),
+                         callCeil(vec[2]), callCeil(vec[3]));
+}
+
 llvm::Value * Instructions::clamp(llvm::Value *in1)
 {
-	// FIXME
+   llvm::Value *zero = constVector(0.0f, 0.0f, 0.0f, 0.0f);
+   llvm::Value *one = constVector(1.0f, 1.0f, 1.0f, 1.0f);
+   return min( max(zero, in1), one);
 }
 
 llvm::Value * Instructions::cmp(llvm::Value *in1, llvm::Value *in2, llvm::Value *in3)
@@ -289,12 +298,14 @@ llvm::Value * Instructions::cross(llvm::Value *in1, llvm::Value *in2)
 
 llvm::Value * Instructions::ddx(llvm::Value *in)
 {
-	// FIXME
+   // FIXME
+   assert(0);
 }
 
 llvm::Value * Instructions::ddy(llvm::Value *in)
 {
-	// FIXME
+   // FIXME
+   assert(0);
 }
 
 llvm::Value * Instructions::div(llvm::Value *in1, llvm::Value *in2)
@@ -319,6 +330,19 @@ llvm::Value * Instructions::dot2add(llvm::Value *in1, llvm::Value *in2, llvm::Va
    return vectorFromVals(dot2add, dot2add, dot2add, dot2add);
 }
 
+llvm::Value * Instructions::dp2(llvm::Value *in1, llvm::Value *in2)
+{
+   Value *mulRes = mul(in1, in2);
+   Value *x = m_builder.CreateExtractElement(mulRes,
+                                                          m_storage->constantInt(0),
+                                                          name("extractx"));
+   Value *y = m_builder.CreateExtractElement(mulRes,
+                                                          m_storage->constantInt(1),
+                                                          name("extracty"));
+   Value *xy = m_builder.CreateAdd(x, y,name("xy"));
+   return vectorFromVals(xy, xy, xy, xy);
+}
+
 llvm::Value * Instructions::dp3(llvm::Value *in1, llvm::Value *in2)
 {
    Value *mulRes = mul(in1, in2);
@@ -581,6 +605,12 @@ llvm::Value * Instructions::neg(llvm::Value *in)
    return neg;
 }
 
+llvm::Value * Instructions::nrm(llvm::Value *in)
+{
+   llvm::Value *v = rsq(in);
+   return mul(v, in);
+}
+
 llvm::Value * Instructions::pow(llvm::Value *in1, llvm::Value *in2)
 {
    Value *x1 = m_builder.CreateExtractElement(in1,
@@ -887,6 +917,31 @@ const char * Instructions::name(const char *prefix)
    return m_name;
 }
 
+llvm::Value * Instructions::callCeil(llvm::Value *val)
+{
+   if (!m_llvmCeil) {
+      // predeclare the intrinsic
+      std::vector<const Type*> ceilArgs;
+      ceilArgs.push_back(Type::FloatTy);
+      PAListPtr ceilPal;
+      FunctionType* ceilType = FunctionType::get(
+         /*Result=*/Type::FloatTy,
+         /*Params=*/ceilArgs,
+         /*isVarArg=*/false);
+      m_llvmCeil = Function::Create(
+         /*Type=*/ceilType,
+         /*Linkage=*/GlobalValue::ExternalLinkage,
+         /*Name=*/"ceilf", m_mod);
+      m_llvmCeil->setCallingConv(CallingConv::C);
+      m_llvmCeil->setParamAttrs(ceilPal);
+   }
+   CallInst *call =  m_builder.CreateCall(m_llvmCeil, val,
+                                          name("ceilf"));
+   call->setCallingConv(CallingConv::C);
+   call->setTailCall(false);
+   return call;
+}
+
 llvm::Value *Instructions::callFAbs(llvm::Value *val)
 {
    if (!m_llvmFAbs) {
-- 
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