Mesa (master): gallivm: add bitarit xor and not ops.

[Dave Airlie]

Module: Mesa
Branch: master
Commit: aec11e4daa36fb31774971ce34f04e3ebeeeeed7
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=aec11e4daa36fb31774971ce34f04e3ebeeeeed7

Author: Dave Airlie <airlied at redhat.com>
Date:   Fri Feb 17 19:02:21 2012 +0000

gallivm: add bitarit xor and not ops.

Signed-off-by: Dave Airlie <airlied at redhat.com>

---

 src/gallium/auxiliary/gallivm/lp_bld_bitarit.c |   44 ++++++++++++++++++++++++
 src/gallium/auxiliary/gallivm/lp_bld_bitarit.h |    5 +++
 2 files changed, 49 insertions(+), 0 deletions(-)

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_bitarit.c b/src/gallium/auxiliary/gallivm/lp_bld_bitarit.c
index a9c57d6..97ae162 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_bitarit.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_bitarit.c
@@ -62,6 +62,31 @@ lp_build_or(struct lp_build_context *bld, LLVMValueRef a, LLVMValueRef b)
    return res;
 }
 
+/* bitwise XOR (a ^ b) */
+LLVMValueRef
+lp_build_xor(struct lp_build_context *bld, LLVMValueRef a, LLVMValueRef b)
+{
+   LLVMBuilderRef builder = bld->gallivm->builder;
+   const struct lp_type type = bld->type;
+   LLVMValueRef res;
+
+   assert(lp_check_value(type, a));
+   assert(lp_check_value(type, b));
+
+   /* can't do bitwise ops on floating-point values */
+   if (type.floating) {
+      a = LLVMBuildBitCast(builder, a, bld->int_vec_type, "");
+      b = LLVMBuildBitCast(builder, b, bld->int_vec_type, "");
+   }
+
+   res = LLVMBuildXor(builder, a, b, "");
+
+   if (type.floating) {
+      res = LLVMBuildBitCast(builder, res, bld->vec_type, "");
+   }
+
+   return res;
+}
 
 /**
  * Return (a & b)
@@ -121,6 +146,25 @@ lp_build_andnot(struct lp_build_context *bld, LLVMValueRef a, LLVMValueRef b)
    return res;
 }
 
+/* bitwise NOT */
+LLVMValueRef
+lp_build_not(struct lp_build_context *bld, LLVMValueRef a)
+{
+   LLVMBuilderRef builder = bld->gallivm->builder;
+   const struct lp_type type = bld->type;
+   LLVMValueRef res;
+
+   assert(lp_check_value(type, a));
+
+   if (type.floating) {
+      a = LLVMBuildBitCast(builder, a, bld->int_vec_type, "");
+   }
+   res = LLVMBuildNot(builder, a, "");
+   if (type.floating) {
+      res = LLVMBuildBitCast(builder, res, bld->vec_type, "");
+   }
+   return res;
+}
 
 /**
  * Shift left.
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_bitarit.h b/src/gallium/auxiliary/gallivm/lp_bld_bitarit.h
index 5c5b981..29f5def 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_bitarit.h
+++ b/src/gallium/auxiliary/gallivm/lp_bld_bitarit.h
@@ -48,6 +48,9 @@ LLVMValueRef
 lp_build_or(struct lp_build_context *bld, LLVMValueRef a, LLVMValueRef b);
 
 LLVMValueRef
+lp_build_xor(struct lp_build_context *bld, LLVMValueRef a, LLVMValueRef b);
+
+LLVMValueRef
 lp_build_and(struct lp_build_context *bld, LLVMValueRef a, LLVMValueRef b);
 
 LLVMValueRef
@@ -65,5 +68,7 @@ lp_build_shl_imm(struct lp_build_context *bld, LLVMValueRef a, unsigned imm);
 LLVMValueRef
 lp_build_shr_imm(struct lp_build_context *bld, LLVMValueRef a, unsigned imm);
 
+LLVMValueRef
+lp_build_not(struct lp_build_context *bld, LLVMValueRef a);
 
 #endif /* !LP_BLD_ARIT_H */