[Mesa-dev] [PATCH 1/5] tgsi: add source/destination type from opcodes.

[Dave Airlie]

From: Dave Airlie <airlied at redhat.com>

These two functions produce the src/dst types for an opcode.

MOV is special since it can be used to mov float->float and int->int,
so just return VOID.

Signed-off-by: Dave Airlie <airlied at redhat.com>
---
 src/gallium/auxiliary/tgsi/tgsi_info.c |   97 ++++++++++++++++++++++++++++++++
 src/gallium/auxiliary/tgsi/tgsi_info.h |    6 ++
 2 files changed, 103 insertions(+), 0 deletions(-)

diff --git a/src/gallium/auxiliary/tgsi/tgsi_info.c b/src/gallium/auxiliary/tgsi/tgsi_info.c
index 2407448..4659fb3 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_info.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_info.c
@@ -243,3 +243,100 @@ tgsi_get_processor_name( uint processor )
       return "unknown shader type!";
    }
 }
+
+/*
+ * infer the source type of a TGSI opcode.
+ * MOV is special so return VOID
+ */
+enum util_format_type
+tgsi_opcode_infer_src_type( uint opcode )
+{
+   switch (opcode) {
+   case TGSI_OPCODE_MOV:
+      return UTIL_FORMAT_TYPE_VOID;
+   case TGSI_OPCODE_AND:
+   case TGSI_OPCODE_OR:
+   case TGSI_OPCODE_XOR:
+   case TGSI_OPCODE_SAD:
+   case TGSI_OPCODE_U2F:
+   case TGSI_OPCODE_UADD:
+   case TGSI_OPCODE_UDIV:
+   case TGSI_OPCODE_UMOD:
+   case TGSI_OPCODE_UMAD:
+   case TGSI_OPCODE_UMUL:
+   case TGSI_OPCODE_UMAX:
+   case TGSI_OPCODE_UMIN:
+   case TGSI_OPCODE_USEQ:
+   case TGSI_OPCODE_USGE:
+   case TGSI_OPCODE_USLT:
+   case TGSI_OPCODE_USNE:
+   case TGSI_OPCODE_USHR:
+   case TGSI_OPCODE_SHL:
+   case TGSI_OPCODE_TXQ:
+      return UTIL_FORMAT_TYPE_UNSIGNED;
+   case TGSI_OPCODE_MOD:
+   case TGSI_OPCODE_I2F:
+   case TGSI_OPCODE_IDIV:
+   case TGSI_OPCODE_IMAX:
+   case TGSI_OPCODE_IMIN:
+   case TGSI_OPCODE_INEG:
+   case TGSI_OPCODE_ISGE:
+   case TGSI_OPCODE_ISHR:
+   case TGSI_OPCODE_ISLT:
+   case TGSI_OPCODE_IABS:
+   case TGSI_OPCODE_ISSG:
+   case TGSI_OPCODE_UARL:
+      return UTIL_FORMAT_TYPE_SIGNED;
+   default:
+      return UTIL_FORMAT_TYPE_FLOAT;
+   }
+}
+
+/*
+ * infer the destination type of a TGSI opcode.
+ * MOV is special so return VOID
+ */
+enum util_format_type
+tgsi_opcode_infer_dst_type( uint opcode )
+{
+   switch (opcode) {
+   case TGSI_OPCODE_MOV:
+      return UTIL_FORMAT_TYPE_VOID;
+   case TGSI_OPCODE_F2U:
+   case TGSI_OPCODE_AND:
+   case TGSI_OPCODE_OR:
+   case TGSI_OPCODE_XOR:
+   case TGSI_OPCODE_SAD:
+   case TGSI_OPCODE_UADD:
+   case TGSI_OPCODE_UDIV:
+   case TGSI_OPCODE_UMOD:
+   case TGSI_OPCODE_UMAD:
+   case TGSI_OPCODE_UMUL:
+   case TGSI_OPCODE_UMAX:
+   case TGSI_OPCODE_UMIN:
+   case TGSI_OPCODE_USEQ:
+   case TGSI_OPCODE_USGE:
+   case TGSI_OPCODE_USLT:
+   case TGSI_OPCODE_USNE:
+   case TGSI_OPCODE_USHR:
+   case TGSI_OPCODE_SHL:
+   case TGSI_OPCODE_TXQ:
+      return UTIL_FORMAT_TYPE_UNSIGNED;
+   case TGSI_OPCODE_F2I:
+   case TGSI_OPCODE_IDIV:
+   case TGSI_OPCODE_IMAX:
+   case TGSI_OPCODE_IMIN:
+   case TGSI_OPCODE_INEG:
+   case TGSI_OPCODE_ISGE:
+   case TGSI_OPCODE_ISHR:
+   case TGSI_OPCODE_ISLT:
+   case TGSI_OPCODE_MOD:
+   case TGSI_OPCODE_UARL:
+   case TGSI_OPCODE_ARL:
+   case TGSI_OPCODE_IABS:
+   case TGSI_OPCODE_ISSG:
+      return UTIL_FORMAT_TYPE_SIGNED;
+   default:
+      return UTIL_FORMAT_TYPE_FLOAT;
+   }
+}
diff --git a/src/gallium/auxiliary/tgsi/tgsi_info.h b/src/gallium/auxiliary/tgsi/tgsi_info.h
index c0427fb..6a2d659 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_info.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_info.h
@@ -30,6 +30,7 @@
 
 #include "pipe/p_compiler.h"
 #include "pipe/p_shader_tokens.h"
+#include "util/u_format.h"
 
 #if defined __cplusplus
 extern "C" {
@@ -90,6 +91,11 @@ tgsi_get_opcode_name( uint opcode );
 const char *
 tgsi_get_processor_name( uint processor );
 
+enum util_format_type
+tgsi_opcode_infer_src_type( uint opcode );
+
+enum util_format_type
+tgsi_opcode_infer_dst_type( uint opcode );
 
 #if defined __cplusplus
 }
-- 
1.7.7.6