From 7e3cd8df183448e2cc01a8f2645a001b0972f4ab Mon Sep 17 00:00:00 2001
From: Tom Stellard <thomas.stellard@amd.com>
Date: Thu, 17 May 2012 18:21:24 -0400
Subject: [PATCH] radeon/llvm: Add DAG nodes for MIN instructions

Also, remove the AMDIL MIN* instruction defs.
---
 src/gallium/drivers/radeon/AMDGPUGenInstrEnums.pl |  2 +-
 src/gallium/drivers/radeon/AMDGPUISelLowering.cpp | 12 ++++++++++++
 src/gallium/drivers/radeon/AMDGPUISelLowering.h   |  3 +++
 src/gallium/drivers/radeon/AMDGPUInstrInfo.td     | 15 +++++++++++++++
 src/gallium/drivers/radeon/AMDILInstructions.td   |  6 ------
 src/gallium/drivers/radeon/R600Instructions.td    | 14 +++++++-------
 6 files changed, 38 insertions(+), 14 deletions(-)

diff --git a/src/gallium/drivers/radeon/AMDGPUGenInstrEnums.pl b/src/gallium/drivers/radeon/AMDGPUGenInstrEnums.pl
index 52b79bd5353..2b83273cc87 100644
--- a/src/gallium/drivers/radeon/AMDGPUGenInstrEnums.pl
+++ b/src/gallium/drivers/radeon/AMDGPUGenInstrEnums.pl
@@ -55,7 +55,7 @@ my $FILE_TYPE = $ARGV[0];
 
 open AMDIL, '<', 'AMDILInstructions.td';
 
-my @INST_ENUMS = ('NONE', 'FEQ', 'FGE', 'FLT', 'FNE', 'MOVE_f32', 'MOVE_i32', 'FTOI', 'ITOF', 'UGT', 'IGE', 'INE', 'UGE', 'IEQ', 'BINARY_OR_i32', 'BINARY_NOT_i32', 'MIN_f32');
+my @INST_ENUMS = ('NONE', 'FEQ', 'FGE', 'FLT', 'FNE', 'MOVE_f32', 'MOVE_i32', 'FTOI', 'ITOF', 'UGT', 'IGE', 'INE', 'UGE', 'IEQ', 'BINARY_OR_i32', 'BINARY_NOT_i32');
 
 while (<AMDIL>) {
   if ($_ =~ /defm\s+([A-Z_]+)\s+:\s+([A-Za-z0-9]+)</) {
diff --git a/src/gallium/drivers/radeon/AMDGPUISelLowering.cpp b/src/gallium/drivers/radeon/AMDGPUISelLowering.cpp
index 0417273d971..b447e67bd8a 100644
--- a/src/gallium/drivers/radeon/AMDGPUISelLowering.cpp
+++ b/src/gallium/drivers/radeon/AMDGPUISelLowering.cpp
@@ -59,6 +59,15 @@ SDValue AMDGPUTargetLowering::LowerINTRINSIC_WO_CHAIN(SDValue Op,
     case AMDGPUIntrinsic::AMDGPU_umax:
       return DAG.getNode(AMDGPUISD::UMAX, DL, VT, Op.getOperand(1),
                                                   Op.getOperand(2));
+    case AMDGPUIntrinsic::AMDIL_min:
+      return DAG.getNode(AMDGPUISD::FMIN, DL, VT, Op.getOperand(1),
+                                                  Op.getOperand(2));
+    case AMDGPUIntrinsic::AMDGPU_imin:
+      return DAG.getNode(AMDGPUISD::SMIN, DL, VT, Op.getOperand(1),
+                                                  Op.getOperand(2));
+    case AMDGPUIntrinsic::AMDGPU_umin:
+      return DAG.getNode(AMDGPUISD::UMIN, DL, VT, Op.getOperand(1),
+                                                  Op.getOperand(2));
   }
 }
 
@@ -108,5 +117,8 @@ const char* AMDGPUTargetLowering::getTargetNodeName(unsigned Opcode) const
   NODE_NAME_CASE(FMAX)
   NODE_NAME_CASE(SMAX)
   NODE_NAME_CASE(UMAX)
+  NODE_NAME_CASE(FMIN)
+  NODE_NAME_CASE(SMIN)
+  NODE_NAME_CASE(UMIN)
   }
 }
diff --git a/src/gallium/drivers/radeon/AMDGPUISelLowering.h b/src/gallium/drivers/radeon/AMDGPUISelLowering.h
index 3e5e81bfef5..849c0c734bb 100644
--- a/src/gallium/drivers/radeon/AMDGPUISelLowering.h
+++ b/src/gallium/drivers/radeon/AMDGPUISelLowering.h
@@ -55,6 +55,9 @@ enum
   FMAX,
   SMAX,
   UMAX,
+  FMIN,
+  SMIN,
+  UMIN,
   LAST_AMDGPU_ISD_NUMBER
 };
 
diff --git a/src/gallium/drivers/radeon/AMDGPUInstrInfo.td b/src/gallium/drivers/radeon/AMDGPUInstrInfo.td
index abb1ebed6f4..b6e0807453d 100644
--- a/src/gallium/drivers/radeon/AMDGPUInstrInfo.td
+++ b/src/gallium/drivers/radeon/AMDGPUInstrInfo.td
@@ -29,3 +29,18 @@ def AMDGPUsmax : SDNode<"AMDGPUISD::SMAX", SDTIntBinOp,
 def AMDGPUumax : SDNode<"AMDGPUISD::UMAX", SDTIntBinOp,
   [SDNPCommutative, SDNPAssociative]
 >;
+
+// out = min(a, b) a and b are floats
+def AMDGPUfmin : SDNode<"AMDGPUISD::FMIN", SDTFPBinOp,
+  [SDNPCommutative, SDNPAssociative]
+>;
+
+// out = min(a, b) a snd b are signed ints
+def AMDGPUsmin : SDNode<"AMDGPUISD::SMIN", SDTIntBinOp,
+  [SDNPCommutative, SDNPAssociative]
+>;
+
+// out = min(a, b) a and b are unsigned ints
+def AMDGPUumin : SDNode<"AMDGPUISD::UMIN", SDTIntBinOp,
+  [SDNPCommutative, SDNPAssociative]
+>;
diff --git a/src/gallium/drivers/radeon/AMDILInstructions.td b/src/gallium/drivers/radeon/AMDILInstructions.td
index 629a2c0299a..8f22d6672fb 100644
--- a/src/gallium/drivers/radeon/AMDILInstructions.td
+++ b/src/gallium/drivers/radeon/AMDILInstructions.td
@@ -102,7 +102,6 @@ defm IMAD24  : TernaryIntrinsicInt<IL_OP_I_MAD24, int_AMDIL_mad24_i32>;
 }
 defm CARRY  : BinaryIntrinsicInt<IL_OP_I_CARRY, int_AMDIL_carry_i32>;
 defm BORROW  : BinaryIntrinsicInt<IL_OP_I_BORROW, int_AMDIL_borrow_i32>;
-defm IMIN  : BinaryIntrinsicInt<IL_OP_I_MIN, int_AMDIL_min_i32>;
 defm IMAX  : BinaryIntrinsicInt<IL_OP_I_MAX, int_AMDIL_max_i32>;
 defm IBIT_EXTRACT : TernaryIntrinsicInt<IL_OP_IBIT_EXTRACT,
           int_AMDIL_bit_extract_i32>;
@@ -137,7 +136,6 @@ defm UBIT_REVERSE : UnaryIntrinsicInt<IL_OP_UBIT_REVERSE,
 defm UMULHI_INT : BinaryIntrinsicInt<IL_OP_U_MUL_HIGH, int_AMDIL_mulhi_u32>;
 defm UMULHI24   : BinaryIntrinsicInt<IL_OP_U_MULHI24, int_AMDIL_mulhi24_u32>;
 defm UMUL24     : BinaryIntrinsicInt<IL_OP_U_MUL24, int_AMDIL_mul24_u32>;
-defm UMIN  : BinaryIntrinsicInt<IL_OP_U_MIN, int_AMDIL_min_u32>;
 defm UMAX  : BinaryIntrinsicInt<IL_OP_U_MAX, int_AMDIL_max_u32>;
 defm UBIT_EXTRACT : TernaryIntrinsicInt<IL_OP_UBIT_EXTRACT,
           int_AMDIL_bit_extract_u32>;
@@ -169,8 +167,6 @@ def LADD        : TwoInOneOut<IL_OP_I64_ADD, (outs GPRI64:$dst),
                   (ins GPRI64:$src1, GPRI64:$src2),
                   !strconcat(IL_OP_I64_ADD.Text, " $dst, $src1, $src2"),
                 [(set GPRI64:$dst, (IL_add GPRI64:$src1, GPRI64:$src2))]>;
-defm IMIN64 : BinaryIntrinsicLong<IL_OP_I64_MIN, int_AMDIL_min_i32>;
-defm UMIN64 : BinaryIntrinsicLong<IL_OP_U64_MIN, int_AMDIL_min_u32>;
 defm IMAX64 : BinaryIntrinsicLong<IL_OP_I64_MAX, int_AMDIL_max_i32>;
 defm UMAX64 : BinaryIntrinsicLong<IL_OP_U64_MAX, int_AMDIL_max_u32>;
 }
@@ -250,7 +246,6 @@ defm POW : BinaryIntrinsicFloat<IL_OP_POW, int_AMDIL_pow>;
 
 let hasIEEEFlag = 1 in {
   let mayLoad = 0, mayStore=0 in {
-defm MIN  : BinaryIntrinsicFloat<IL_OP_MIN, int_AMDIL_min>;
   }
 defm MOD  : BinaryOpMCf32<IL_OP_MOD, frem>;
 }
@@ -367,7 +362,6 @@ def NEG_v2f64       : OneInOneOut<IL_OP_MOV, (outs GPRV2F64:$dst),
     !strconcat(IL_OP_MOV.Text, " $dst, $src0"),
     [(set GPRV2F64:$dst, (fneg GPRV2F64:$src0))]>;
   let mayLoad = 0, mayStore=0 in {
-defm MIN  : BinaryIntrinsicDouble<IL_OP_D_MIN, int_AMDIL_min>;
 defm MAX  : BinaryIntrinsicDouble<IL_OP_D_MAX, int_AMDIL_max>;
 defm DIV  : BinaryIntrinsicDouble<IL_OP_D_DIV, int_AMDIL_div>;
 defm MAD  : TernaryIntrinsicDouble<IL_OP_D_MAD, int_AMDIL_mad>;
diff --git a/src/gallium/drivers/radeon/R600Instructions.td b/src/gallium/drivers/radeon/R600Instructions.td
index 459010c7833..a42d917e11d 100644
--- a/src/gallium/drivers/radeon/R600Instructions.td
+++ b/src/gallium/drivers/radeon/R600Instructions.td
@@ -265,9 +265,8 @@ def MAX : R600_2OP <
 
 def MIN : R600_2OP <
   0x4, "MIN",
-  [(set R600_Reg32:$dst, (int_AMDIL_min R600_Reg32:$src0, R600_Reg32:$src1))]> {
-  let AMDILOp = AMDILInst.MIN_f32;
-}
+  [(set R600_Reg32:$dst, (AMDGPUfmin R600_Reg32:$src0, R600_Reg32:$src1))]
+>;
 
 /* For the SET* instructions there is a naming conflict in TargetSelectionDAG.td,
  * so some of the instruction names don't match the asm string.
@@ -372,16 +371,17 @@ def MAX_INT : R600_2OP <
 
 def MIN_INT : R600_2OP <
   0x37, "MIN_INT",
-  [(set R600_Reg32:$dst, (int_AMDGPU_imin R600_Reg32:$src0, R600_Reg32:$src1))]>;
+  [(set R600_Reg32:$dst, (AMDGPUsmin R600_Reg32:$src0, R600_Reg32:$src1))]>;
 
 def MAX_UINT : R600_2OP <
   0x38, "MAX_UINT",
-  [(set R600_Reg32:$dst, (AMDGPUsmax R600_Reg32:$src0, R600_Reg32:$src1))]>;
+  [(set R600_Reg32:$dst, (AMDGPUsmax R600_Reg32:$src0, R600_Reg32:$src1))]
+>;
 
 def MIN_UINT : R600_2OP <
   0x39, "MIN_UINT",
-  [(set R600_Reg32:$dst, (int_AMDGPU_umin R600_Reg32:$src0, R600_Reg32:$src1))]>;
-
+  [(set R600_Reg32:$dst, (AMDGPUumin R600_Reg32:$src0, R600_Reg32:$src1))]
+>;
 
 def SETE_INT : R600_2OP <
   0x3A, "SETE_INT",
-- 
2.30.2