From e482d29951c7af081e46192eaba809e9cfa9583a Mon Sep 17 00:00:00 2001
From: Matt Pharr <matt.pharr@intel.com>
Date: Mon, 5 Mar 2012 06:22:40 -0800
Subject: [PATCH] Add LLVM{U}IntAsType() utility routine

---
 llvmutil.cpp | 36 ++++++++++++++++++++++++++++++++++++
 llvmutil.h   |  8 ++++++++
 2 files changed, 44 insertions(+)

diff --git a/llvmutil.cpp b/llvmutil.cpp
index bbad2886..0f5bfd1b 100644
--- a/llvmutil.cpp
+++ b/llvmutil.cpp
@@ -469,6 +469,42 @@ LLVMBoolVector(const bool *bvec) {
 }
 
 
+llvm::Constant *
+LLVMIntAsType(int64_t val, LLVM_TYPE_CONST llvm::Type *type) {
+    LLVM_TYPE_CONST llvm::VectorType *vecType =
+        llvm::dyn_cast<LLVM_TYPE_CONST llvm::VectorType>(type);
+
+    if (vecType != NULL) {
+        llvm::Constant *v = llvm::ConstantInt::get(vecType->getElementType(),
+                                                   val, true /* signed */);
+        std::vector<llvm::Constant *> vals;
+        for (int i = 0; i < (int)vecType->getNumElements(); ++i)
+            vals.push_back(v);
+        return llvm::ConstantVector::get(vals);
+    }
+    else
+        return llvm::ConstantInt::get(type, val, true /* signed */);
+}
+
+
+llvm::Constant *
+LLVMUIntAsType(uint64_t val, LLVM_TYPE_CONST llvm::Type *type) {
+    LLVM_TYPE_CONST llvm::VectorType *vecType =
+        llvm::dyn_cast<LLVM_TYPE_CONST llvm::VectorType>(type);
+
+    if (vecType != NULL) {
+        llvm::Constant *v = llvm::ConstantInt::get(vecType->getElementType(),
+                                                   val, false /* unsigned */);
+        std::vector<llvm::Constant *> vals;
+        for (int i = 0; i < (int)vecType->getNumElements(); ++i)
+            vals.push_back(v);
+        return llvm::ConstantVector::get(vals);
+    }
+    else
+        return llvm::ConstantInt::get(type, val, false /* unsigned */);
+}
+
+
 /** Conservative test to see if two llvm::Values are equal.  There are
     (potentially many) cases where the two values actually are equal but
     this will return false.  However, if it does return true, the two
diff --git a/llvmutil.h b/llvmutil.h
index a1257084..02857e34 100644
--- a/llvmutil.h
+++ b/llvmutil.h
@@ -173,6 +173,14 @@ extern llvm::Constant *LLVMFloatVector(float f);
     across all elements */
 extern llvm::Constant *LLVMDoubleVector(double f);
 
+/** Returns a constant integer or vector (according to the given type) of
+    the given signed integer value. */
+extern llvm::Constant *LLVMIntAsType(int64_t, LLVM_TYPE_CONST llvm::Type *t);
+
+/** Returns a constant integer or vector (according to the given type) of
+    the given unsigned integer value. */
+extern llvm::Constant *LLVMUIntAsType(uint64_t, LLVM_TYPE_CONST llvm::Type *t);
+
 /** Returns an LLVM boolean vector based on the given array of values.
     The array should have g->target.vectorWidth elements. */
 extern llvm::Constant *LLVMBoolVector(const bool *v);