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-rw-r--r--src/gallium/drivers/llvmpipe/lp_bld_arit.c95
-rw-r--r--src/gallium/drivers/llvmpipe/lp_bld_arit.h16
2 files changed, 111 insertions, 0 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_bld_arit.c b/src/gallium/drivers/llvmpipe/lp_bld_arit.c
index be7442d00a..ce3e5f91c0 100644
--- a/src/gallium/drivers/llvmpipe/lp_bld_arit.c
+++ b/src/gallium/drivers/llvmpipe/lp_bld_arit.c
@@ -623,6 +623,47 @@ lp_build_abs(struct lp_build_context *bld,
}
+LLVMValueRef
+lp_build_sgn(struct lp_build_context *bld,
+ LLVMValueRef a)
+{
+ const union lp_type type = bld->type;
+ LLVMTypeRef vec_type = lp_build_vec_type(type);
+ LLVMValueRef cond;
+ LLVMValueRef res;
+
+ /* Handle non-zero case */
+ if(!type.sign) {
+ /* if not zero then sign must be positive */
+ res = bld->one;
+ }
+ else if(type.floating) {
+ /* Take the sign bit and add it to 1 constant */
+ LLVMTypeRef int_vec_type = lp_build_int_vec_type(type);
+ LLVMValueRef mask = lp_build_int_const_scalar(type, (unsigned long long)1 << (type.width - 1));
+ LLVMValueRef sign;
+ LLVMValueRef one;
+ sign = LLVMBuildBitCast(bld->builder, a, int_vec_type, "");
+ sign = LLVMBuildAnd(bld->builder, sign, mask, "");
+ one = LLVMConstBitCast(bld->one, int_vec_type);
+ res = LLVMBuildOr(bld->builder, sign, one, "");
+ res = LLVMBuildBitCast(bld->builder, res, vec_type, "");
+ }
+ else
+ {
+ LLVMValueRef minus_one = lp_build_const_scalar(type, -1.0);
+ cond = lp_build_cmp(bld, PIPE_FUNC_GREATER, a, bld->zero);
+ res = lp_build_select(bld, cond, bld->one, minus_one);
+ }
+
+ /* Handle zero */
+ cond = lp_build_cmp(bld, PIPE_FUNC_EQUAL, a, bld->zero);
+ res = lp_build_select(bld, cond, bld->zero, bld->one);
+
+ return res;
+}
+
+
enum lp_build_round_sse41_mode
{
LP_BUILD_ROUND_SSE41_NEAREST = 0,
@@ -662,6 +703,24 @@ lp_build_round_sse41(struct lp_build_context *bld,
LLVMValueRef
+lp_build_round(struct lp_build_context *bld,
+ LLVMValueRef a)
+{
+ const union lp_type type = bld->type;
+
+ assert(type.floating);
+
+#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
+ return lp_build_round_sse41(bld, a, LP_BUILD_ROUND_SSE41_NEAREST);
+#endif
+
+ /* FIXME */
+ assert(0);
+ return bld->undef;
+}
+
+
+LLVMValueRef
lp_build_floor(struct lp_build_context *bld,
LLVMValueRef a)
{
@@ -679,6 +738,42 @@ lp_build_floor(struct lp_build_context *bld,
}
+LLVMValueRef
+lp_build_ceil(struct lp_build_context *bld,
+ LLVMValueRef a)
+{
+ const union lp_type type = bld->type;
+
+ assert(type.floating);
+
+#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
+ return lp_build_round_sse41(bld, a, LP_BUILD_ROUND_SSE41_CEIL);
+#endif
+
+ /* FIXME */
+ assert(0);
+ return bld->undef;
+}
+
+
+LLVMValueRef
+lp_build_trunc(struct lp_build_context *bld,
+ LLVMValueRef a)
+{
+ const union lp_type type = bld->type;
+
+ assert(type.floating);
+
+#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
+ return lp_build_round_sse41(bld, a, LP_BUILD_ROUND_SSE41_TRUNCATE);
+#endif
+
+ /* FIXME */
+ assert(0);
+ return bld->undef;
+}
+
+
/**
* Convert to integer, through whichever rounding method that's fastest,
* typically truncating to zero.
diff --git a/src/gallium/drivers/llvmpipe/lp_bld_arit.h b/src/gallium/drivers/llvmpipe/lp_bld_arit.h
index 383c3c3313..5e083b847f 100644
--- a/src/gallium/drivers/llvmpipe/lp_bld_arit.h
+++ b/src/gallium/drivers/llvmpipe/lp_bld_arit.h
@@ -106,10 +106,26 @@ lp_build_abs(struct lp_build_context *bld,
LLVMValueRef a);
LLVMValueRef
+lp_build_sgn(struct lp_build_context *bld,
+ LLVMValueRef a);
+
+LLVMValueRef
+lp_build_round(struct lp_build_context *bld,
+ LLVMValueRef a);
+
+LLVMValueRef
lp_build_floor(struct lp_build_context *bld,
LLVMValueRef a);
LLVMValueRef
+lp_build_ceil(struct lp_build_context *bld,
+ LLVMValueRef a);
+
+LLVMValueRef
+lp_build_trunc(struct lp_build_context *bld,
+ LLVMValueRef a);
+
+LLVMValueRef
lp_build_int(struct lp_build_context *bld,
LLVMValueRef a);