Mesa (master): i965: Add backend_instruction::can_do_cmod().

[Matt Turner]

Module: Mesa
Branch: master
Commit: 0654ca7d7ea4f18b91783042cd497ab28b26ae69
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=0654ca7d7ea4f18b91783042cd497ab28b26ae69

Author: Matt Turner <mattst88 at gmail.com>
Date:   Sun Aug 24 14:01:48 2014 -0700

i965: Add backend_instruction::can_do_cmod().

Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>

---

 src/mesa/drivers/dri/i965/brw_shader.cpp |   45 ++++++++++++++++++++++++++++++
 src/mesa/drivers/dri/i965/brw_shader.h   |    1 +
 2 files changed, 46 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/brw_shader.cpp b/src/mesa/drivers/dri/i965/brw_shader.cpp
index d76134b..cbdf976 100644
--- a/src/mesa/drivers/dri/i965/brw_shader.cpp
+++ b/src/mesa/drivers/dri/i965/brw_shader.cpp
@@ -790,6 +790,51 @@ backend_instruction::can_do_saturate() const
 }
 
 bool
+backend_instruction::can_do_cmod() const
+{
+   switch (opcode) {
+   case BRW_OPCODE_ADD:
+   case BRW_OPCODE_ADDC:
+   case BRW_OPCODE_AND:
+   case BRW_OPCODE_ASR:
+   case BRW_OPCODE_AVG:
+   case BRW_OPCODE_CMP:
+   case BRW_OPCODE_CMPN:
+   case BRW_OPCODE_DP2:
+   case BRW_OPCODE_DP3:
+   case BRW_OPCODE_DP4:
+   case BRW_OPCODE_DPH:
+   case BRW_OPCODE_F16TO32:
+   case BRW_OPCODE_F32TO16:
+   case BRW_OPCODE_FRC:
+   case BRW_OPCODE_LINE:
+   case BRW_OPCODE_LRP:
+   case BRW_OPCODE_LZD:
+   case BRW_OPCODE_MAC:
+   case BRW_OPCODE_MACH:
+   case BRW_OPCODE_MAD:
+   case BRW_OPCODE_MOV:
+   case BRW_OPCODE_MUL:
+   case BRW_OPCODE_NOT:
+   case BRW_OPCODE_OR:
+   case BRW_OPCODE_PLN:
+   case BRW_OPCODE_RNDD:
+   case BRW_OPCODE_RNDE:
+   case BRW_OPCODE_RNDU:
+   case BRW_OPCODE_RNDZ:
+   case BRW_OPCODE_SAD2:
+   case BRW_OPCODE_SADA2:
+   case BRW_OPCODE_SHL:
+   case BRW_OPCODE_SHR:
+   case BRW_OPCODE_SUBB:
+   case BRW_OPCODE_XOR:
+      return true;
+   default:
+      return false;
+   }
+}
+
+bool
 backend_instruction::reads_accumulator_implicitly() const
 {
    switch (opcode) {
diff --git a/src/mesa/drivers/dri/i965/brw_shader.h b/src/mesa/drivers/dri/i965/brw_shader.h
index 233e224..54d770e 100644
--- a/src/mesa/drivers/dri/i965/brw_shader.h
+++ b/src/mesa/drivers/dri/i965/brw_shader.h
@@ -87,6 +87,7 @@ struct backend_instruction : public exec_node {
    bool is_control_flow() const;
    bool can_do_source_mods() const;
    bool can_do_saturate() const;
+   bool can_do_cmod() const;
    bool reads_accumulator_implicitly() const;
    bool writes_accumulator_implicitly(struct brw_context *brw) const;