From 3dae284f5e865ad21d9ce0e0a2f038e5932b7a13 Mon Sep 17 00:00:00 2001
From: Eli Friedman <eli.friedman@gmail.com>
Date: Wed, 22 Jul 2009 01:06:52 +0000
Subject: [PATCH] Add support for MMX VSETCC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76713 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/X86ISelLowering.cpp |  6 ++++++
 lib/Target/X86/X86InstrMMX.td      | 27 +++++++++++++++++++++++++++
 2 files changed, 33 insertions(+)

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index b276e83c9a2..57a13ac20f2 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -640,6 +640,9 @@ X86TargetLowering::X86TargetLowering(X86TargetMachine &TM)
     setOperationAction(ISD::SELECT,             MVT::v4i16, Promote);
     setOperationAction(ISD::SELECT,             MVT::v2i32, Promote);
     setOperationAction(ISD::SELECT,             MVT::v1i64, Custom);
+    setOperationAction(ISD::VSETCC,             MVT::v8i8, Custom);
+    setOperationAction(ISD::VSETCC,             MVT::v4i16, Custom);
+    setOperationAction(ISD::VSETCC,             MVT::v2i32, Custom);
   }
 
   if (!UseSoftFloat && Subtarget->hasSSE1()) {
@@ -5482,8 +5485,11 @@ SDValue X86TargetLowering::LowerVSETCC(SDValue Op, SelectionDAG &DAG) {
 
   switch (VT.getSimpleVT()) {
   default: break;
+  case MVT::v8i8:
   case MVT::v16i8: EQOpc = X86ISD::PCMPEQB; GTOpc = X86ISD::PCMPGTB; break;
+  case MVT::v4i16:
   case MVT::v8i16: EQOpc = X86ISD::PCMPEQW; GTOpc = X86ISD::PCMPGTW; break;
+  case MVT::v2i32:
   case MVT::v4i32: EQOpc = X86ISD::PCMPEQD; GTOpc = X86ISD::PCMPGTD; break;
   case MVT::v2i64: EQOpc = X86ISD::PCMPEQQ; GTOpc = X86ISD::PCMPGTQ; break;
   }
diff --git a/lib/Target/X86/X86InstrMMX.td b/lib/Target/X86/X86InstrMMX.td
index fd00b08383f..e7fea06d178 100644
--- a/lib/Target/X86/X86InstrMMX.td
+++ b/lib/Target/X86/X86InstrMMX.td
@@ -657,6 +657,33 @@ def : Pat<(v8i8 (bitconvert (i64 (vector_extract (v2i64 VR128:$src),
                                                   (iPTR 0))))),
           (v8i8 (MMX_MOVDQ2Qrr VR128:$src))>;
 
+// Patterns for vector comparisons
+def : Pat<(v8i8 (X86pcmpeqb VR64:$src1, VR64:$src2)),
+          (MMX_PCMPEQBrr VR64:$src1, VR64:$src2)>;
+def : Pat<(v8i8 (X86pcmpeqb VR64:$src1, (bitconvert (load_mmx addr:$src2)))),
+          (MMX_PCMPEQBrm VR64:$src1, addr:$src2)>;
+def : Pat<(v4i16 (X86pcmpeqw VR64:$src1, VR64:$src2)),
+          (MMX_PCMPEQWrr VR64:$src1, VR64:$src2)>;
+def : Pat<(v4i16 (X86pcmpeqw VR64:$src1, (bitconvert (load_mmx addr:$src2)))),
+          (MMX_PCMPEQWrm VR64:$src1, addr:$src2)>;
+def : Pat<(v2i32 (X86pcmpeqd VR64:$src1, VR64:$src2)),
+          (MMX_PCMPEQDrr VR64:$src1, VR64:$src2)>;
+def : Pat<(v2i32 (X86pcmpeqd VR64:$src1, (bitconvert (load_mmx addr:$src2)))),
+          (MMX_PCMPEQDrm VR64:$src1, addr:$src2)>;
+
+def : Pat<(v8i8 (X86pcmpgtb VR64:$src1, VR64:$src2)),
+          (MMX_PCMPGTBrr VR64:$src1, VR64:$src2)>;
+def : Pat<(v8i8 (X86pcmpgtb VR64:$src1, (bitconvert (load_mmx addr:$src2)))),
+          (MMX_PCMPGTBrm VR64:$src1, addr:$src2)>;
+def : Pat<(v4i16 (X86pcmpgtw VR64:$src1, VR64:$src2)),
+          (MMX_PCMPGTWrr VR64:$src1, VR64:$src2)>;
+def : Pat<(v4i16 (X86pcmpgtw VR64:$src1, (bitconvert (load_mmx addr:$src2)))),
+          (MMX_PCMPGTWrm VR64:$src1, addr:$src2)>;
+def : Pat<(v2i32 (X86pcmpgtd VR64:$src1, VR64:$src2)),
+          (MMX_PCMPGTDrr VR64:$src1, VR64:$src2)>;
+def : Pat<(v2i32 (X86pcmpgtd VR64:$src1, (bitconvert (load_mmx addr:$src2)))),
+          (MMX_PCMPGTDrm VR64:$src1, addr:$src2)>;
+
 // CMOV* - Used to implement the SELECT DAG operation.  Expanded by the
 // scheduler into a branch sequence.
 // These are expanded by the scheduler.