[Mesa-dev] [PATCH 08/12] radeon/llvm: add support for AHSR/LSHR/LSHL instructions

[Vadim Girlin]

Signed-off-by: Vadim Girlin <vadimgirlin at gmail.com>
---
 src/gallium/drivers/radeon/R600InstrInfo.cpp       |   12 ++++++++
 src/gallium/drivers/radeon/R600InstrInfo.h         |    1 +
 src/gallium/drivers/radeon/R600Instructions.td     |    8 +++++
 .../drivers/radeon/radeon_setup_tgsi_llvm.c        |   32 ++++++++++++++++++++
 4 files changed, 53 insertions(+)

diff --git a/src/gallium/drivers/radeon/R600InstrInfo.cpp b/src/gallium/drivers/radeon/R600InstrInfo.cpp
index 0c7ffc4..ed4fcc9 100644
--- a/src/gallium/drivers/radeon/R600InstrInfo.cpp
+++ b/src/gallium/drivers/radeon/R600InstrInfo.cpp
@@ -73,10 +73,22 @@ unsigned R600InstrInfo::getISAOpcode(unsigned opcode) const
     case AMDIL::MOVE_i32:
       return AMDIL::MOV;
     case AMDIL::SHR_i32:
+      return getASHRop();
+    case AMDIL::USHR_i32:
       return getLSHRop();
   }
 }
 
+unsigned R600InstrInfo::getASHRop() const
+{
+	unsigned gen = TM.getSubtarget<AMDILSubtarget>().device()->getGeneration();
+	if (gen < AMDILDeviceInfo::HD5XXX) {
+		return AMDIL::ASHR_r600;
+	} else {
+		return AMDIL::ASHR_eg;
+	}
+}
+
 unsigned R600InstrInfo::getLSHRop() const
 {
   unsigned gen = TM.getSubtarget<AMDILSubtarget>().device()->getGeneration();
diff --git a/src/gallium/drivers/radeon/R600InstrInfo.h b/src/gallium/drivers/radeon/R600InstrInfo.h
index aedaa9f..701cf7f 100644
--- a/src/gallium/drivers/radeon/R600InstrInfo.h
+++ b/src/gallium/drivers/radeon/R600InstrInfo.h
@@ -52,6 +52,7 @@ namespace llvm {
   bool isTrig(const MachineInstr &MI) const;
 
   unsigned getLSHRop() const;
+  unsigned getASHRop() const;
   unsigned getMULHI_UINT() const;
   unsigned getMULLO_UINT() const;
   unsigned getRECIP_UINT() const;
diff --git a/src/gallium/drivers/radeon/R600Instructions.td b/src/gallium/drivers/radeon/R600Instructions.td
index 0a73b5c..9df0570 100644
--- a/src/gallium/drivers/radeon/R600Instructions.td
+++ b/src/gallium/drivers/radeon/R600Instructions.td
@@ -535,6 +535,12 @@ class LSHR_Common <bits<32> inst> : R600_2OP <
   let AMDILOp = AMDILInst.USHR_i32;
 }
 
+class ASHR_Common <bits<32> inst> : R600_2OP <
+  inst, "ASHR $dst, $src0, $src1",
+  [] >{
+  let AMDILOp = AMDILInst.SHR_i32;
+}
+
 class MULHI_INT_Common <bits<32> inst> : R600_2OP <
   inst, "MULHI_INT $dst, $src0, $src1",
   [] >{
@@ -645,6 +651,7 @@ let Gen = AMDGPUGen.R600 in {
   def INT_TO_FLT_r600 : INT_TO_FLT_Common<0x6c>;
   def SIN_r600 : SIN_Common<0x6E>;
   def COS_r600 : COS_Common<0x6F>;
+  def ASHR_r600 : ASHR_Common<0x70>;
   def LSHR_r600 : LSHR_Common<0x71>;
   def LSHL_r600 : LSHL_Common<0x72>;
   def MULLO_INT_r600 : MULLO_INT_Common<0x73>;
@@ -815,6 +822,7 @@ class TRIG_eg <InstR600 trig, Intrinsic intr> : Pat<
 let Gen = AMDGPUGen.EG_CAYMAN in {
 
   def MULADD_eg : MULADD_Common<0x14>;
+  def ASHR_eg : ASHR_Common<0x15>;
   def LSHR_eg : LSHR_Common<0x16>;
   def LSHL_eg : LSHL_Common<0x17>;
   def CNDE_eg : CNDE_Common<0x19>;
diff --git a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
index fe5d1b8..2932bdd 100644
--- a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
+++ b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
@@ -533,6 +533,35 @@ static void tex_fetch_args(
 	emit_data->dst_type = LLVMVectorType(bld_base->base.elem_type, 4);
 }
 
+static void emit_shl(
+		const struct lp_build_tgsi_action * action,
+		struct lp_build_tgsi_context * bld_base,
+		struct lp_build_emit_data * emit_data)
+{
+	LLVMBuilderRef builder = bld_base->base.gallivm->builder;
+	emit_data->output[emit_data->chan] = LLVMBuildShl(builder,
+			emit_data->args[0], emit_data->args[1], "");
+}
+
+static void emit_ushr(
+		const struct lp_build_tgsi_action * action,
+		struct lp_build_tgsi_context * bld_base,
+		struct lp_build_emit_data * emit_data)
+{
+	LLVMBuilderRef builder = bld_base->base.gallivm->builder;
+	emit_data->output[emit_data->chan] = LLVMBuildLShr(builder,
+			emit_data->args[0], emit_data->args[1], "");
+}
+static void emit_ishr(
+		const struct lp_build_tgsi_action * action,
+		struct lp_build_tgsi_context * bld_base,
+		struct lp_build_emit_data * emit_data)
+{
+	LLVMBuilderRef builder = bld_base->base.gallivm->builder;
+	emit_data->output[emit_data->chan] = LLVMBuildAShr(builder,
+			emit_data->args[0], emit_data->args[1], "");
+}
+
 static void emit_immediate(struct lp_build_tgsi_context * bld_base,
 		const struct tgsi_full_immediate *imm)
 {
@@ -606,6 +635,9 @@ void radeon_llvm_context_init(struct radeon_llvm_context * ctx)
 
 	lp_set_default_actions(bld_base);
 
+	bld_base->op_actions[TGSI_OPCODE_SHL].emit = emit_shl;
+	bld_base->op_actions[TGSI_OPCODE_ISHR].emit = emit_ishr;
+	bld_base->op_actions[TGSI_OPCODE_USHR].emit = emit_ushr;
 	bld_base->op_actions[TGSI_OPCODE_DDX].intr_name = "llvm.AMDGPU.ddx";
 	bld_base->op_actions[TGSI_OPCODE_DDX].fetch_args = tex_fetch_args;
 	bld_base->op_actions[TGSI_OPCODE_DDY].intr_name = "llvm.AMDGPU.ddy";
-- 
1.7.10.1