Mesa (master): gallivm: Add function lp_bld_gather_values()

[Tom Stellard]

Module: Mesa
Branch: master
Commit: 52049744620854487012151a7ac26ca978905411
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=52049744620854487012151a7ac26ca978905411

Author: Tom Stellard <thomas.stellard at amd.com>
Date:   Wed Jan 11 13:05:16 2012 -0500

gallivm: Add function lp_bld_gather_values()

---

 src/gallium/auxiliary/gallivm/lp_bld_gather.c |   17 +++++++++++++++++
 src/gallium/auxiliary/gallivm/lp_bld_gather.h |    4 ++++
 2 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_gather.c b/src/gallium/auxiliary/gallivm/lp_bld_gather.c
index 0dc81b1..1bdd4e4 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_gather.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_gather.c
@@ -147,3 +147,20 @@ lp_build_gather(struct gallivm_state *gallivm,
 
    return res;
 }
+
+LLVMValueRef
+lp_build_gather_values(struct gallivm_state * gallivm,
+                       LLVMValueRef * values,
+                       unsigned value_count)
+{
+   LLVMTypeRef vec_type = LLVMVectorType(LLVMTypeOf(values[0]), value_count);
+   LLVMBuilderRef builder = gallivm->builder;
+   LLVMValueRef vec = LLVMGetUndef(vec_type);
+   unsigned i;
+
+   for (i = 0; i < value_count; i++) {
+      LLVMValueRef index = lp_build_const_int32(gallivm, i);
+      vec = LLVMBuildInsertElement(builder, vec, values[i], index, "");
+   }
+   return vec;
+}
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_gather.h b/src/gallium/auxiliary/gallivm/lp_bld_gather.h
index 5b04131..8e4c07d 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_gather.h
+++ b/src/gallium/auxiliary/gallivm/lp_bld_gather.h
@@ -57,5 +57,9 @@ lp_build_gather(struct gallivm_state *gallivm,
                 LLVMValueRef base_ptr,
                 LLVMValueRef offsets);
 
+LLVMValueRef
+lp_build_gather_values(struct gallivm_state * gallivm,
+                       LLVMValueRef * values,
+                       unsigned value_count);
 
 #endif /* LP_BLD_GATHER_H_ */