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-rw-r--r--src/gallium/auxiliary/gallivm/lp_bld_logic.c10
-rw-r--r--src/gallium/auxiliary/gallivm/lp_bld_logic.h5
2 files changed, 15 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_logic.c b/src/gallium/auxiliary/gallivm/lp_bld_logic.c
index e2e533fa7ec..a3b69701162 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_logic.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_logic.c
@@ -483,3 +483,13 @@ lp_build_alloca(struct lp_build_context *bld)
return LLVMBuildAlloca(bld->builder, lp_build_elem_type(type), "");
}
}
+
+
+/** Return (a & ~b) */
+LLVMValueRef
+lp_build_andc(struct lp_build_context *bld, LLVMValueRef a, LLVMValueRef b)
+{
+ b = LLVMBuildNot(bld->builder, b, "");
+ b = LLVMBuildAnd(bld->builder, a, b, "");
+ return b;
+}
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_logic.h b/src/gallium/auxiliary/gallivm/lp_bld_logic.h
index d849d29e95d..00a8c750196 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_logic.h
+++ b/src/gallium/auxiliary/gallivm/lp_bld_logic.h
@@ -79,4 +79,9 @@ lp_build_select_aos(struct lp_build_context *bld,
LLVMValueRef
lp_build_alloca(struct lp_build_context *bld);
+
+LLVMValueRef
+lp_build_andc(struct lp_build_context *bld, LLVMValueRef a, LLVMValueRef b);
+
+
#endif /* !LP_BLD_LOGIC_H */