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Diffstat (limited to 'src/gallium/drivers/llvmpipe/lp_bld_logic.c')
-rw-r--r--src/gallium/drivers/llvmpipe/lp_bld_logic.c48
1 files changed, 45 insertions, 3 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_bld_logic.c b/src/gallium/drivers/llvmpipe/lp_bld_logic.c
index 1e1ecf805bc..8631efd6c3e 100644
--- a/src/gallium/drivers/llvmpipe/lp_bld_logic.c
+++ b/src/gallium/drivers/llvmpipe/lp_bld_logic.c
@@ -33,7 +33,6 @@
*/
-#include "pipe/p_defines.h"
#include "lp_bld_type.h"
#include "lp_bld_const.h"
#include "lp_bld_intr.h"
@@ -52,6 +51,8 @@ lp_build_cmp(struct lp_build_context *bld,
LLVMValueRef zeros = LLVMConstNull(int_vec_type);
LLVMValueRef ones = LLVMConstAllOnes(int_vec_type);
LLVMValueRef cond;
+ LLVMValueRef res;
+ unsigned i;
if(func == PIPE_FUNC_NEVER)
return zeros;
@@ -68,7 +69,6 @@ lp_build_cmp(struct lp_build_context *bld,
LLVMValueRef args[3];
unsigned cc;
boolean swap;
- LLVMValueRef res;
swap = FALSE;
switch(func) {
@@ -219,7 +219,28 @@ lp_build_cmp(struct lp_build_context *bld,
assert(0);
return bld->undef;
}
+
+#if 0
+ /* XXX: Although valid IR, no LLVM target currently support this */
cond = LLVMBuildFCmp(bld->builder, op, a, b, "");
+ res = LLVMBuildSelect(bld->builder, cond, ones, zeros, "");
+#else
+ debug_printf("%s: warning: using slow element-wise vector comparison\n",
+ __FUNCTION__);
+ res = LLVMGetUndef(int_vec_type);
+ for(i = 0; i < type.length; ++i) {
+ LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0);
+ cond = LLVMBuildFCmp(bld->builder, op,
+ LLVMBuildExtractElement(bld->builder, a, index, ""),
+ LLVMBuildExtractElement(bld->builder, b, index, ""),
+ "");
+ cond = LLVMBuildSelect(bld->builder, cond,
+ LLVMConstExtractElement(ones, index),
+ LLVMConstExtractElement(zeros, index),
+ "");
+ res = LLVMBuildInsertElement(bld->builder, res, cond, index, "");
+ }
+#endif
}
else {
LLVMIntPredicate op;
@@ -246,10 +267,31 @@ lp_build_cmp(struct lp_build_context *bld,
assert(0);
return bld->undef;
}
+
+#if 0
+ /* XXX: Although valid IR, no LLVM target currently support this */
cond = LLVMBuildICmp(bld->builder, op, a, b, "");
+ res = LLVMBuildSelect(bld->builder, cond, ones, zeros, "");
+#else
+ debug_printf("%s: warning: using slow element-wise vector comparison\n",
+ __FUNCTION__);
+ res = LLVMGetUndef(int_vec_type);
+ for(i = 0; i < type.length; ++i) {
+ LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0);
+ cond = LLVMBuildICmp(bld->builder, op,
+ LLVMBuildExtractElement(bld->builder, a, index, ""),
+ LLVMBuildExtractElement(bld->builder, b, index, ""),
+ "");
+ cond = LLVMBuildSelect(bld->builder, cond,
+ LLVMConstExtractElement(ones, index),
+ LLVMConstExtractElement(zeros, index),
+ "");
+ res = LLVMBuildInsertElement(bld->builder, res, cond, index, "");
+ }
+#endif
}
- return LLVMBuildSelect(bld->builder, cond, ones, zeros, "");
+ return res;
}