From c37532b24a2ff3dbb56dd506682bf323e47c1702 Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Mon, 1 Sep 2008 07:34:13 +0000
Subject: [PATCH] AXI2 and AXI3 instruction encodings.

llvm-svn: 55598
---
 llvm/lib/Target/ARM/ARMInstrFormats.td | 84 ++++++++++++++++++++++++++
 llvm/lib/Target/ARM/ARMInstrInfo.td    | 20 +++---
 2 files changed, 94 insertions(+), 10 deletions(-)

diff --git a/llvm/lib/Target/ARM/ARMInstrFormats.td b/llvm/lib/Target/ARM/ARMInstrFormats.td
index 222dc38cf501..10153f68d025 100644
--- a/llvm/lib/Target/ARM/ARMInstrFormats.td
+++ b/llvm/lib/Target/ARM/ARMInstrFormats.td
@@ -191,6 +191,15 @@ class AI2ldw<bits<4> opcod, dag oops, dag iops, Format f, string opc,
   let Inst{22}    = 0; // B bit
   let Inst{24}    = 1; // P bit
 }
+class AXI2ldw<bits<4> opcod, dag oops, dag iops, Format f, string asm,
+           list<dag> pattern>
+  : XI<opcod, oops, iops, AddrMode2, Size4Bytes, IndexModeNone, f, asm,
+       "", pattern> {
+  let Inst{20}    = 1; // L bit
+  let Inst{21}    = 0; // W bit
+  let Inst{22}    = 0; // B bit
+  let Inst{24}    = 1; // P bit
+}
 class AI2ldb<bits<4> opcod, dag oops, dag iops, Format f, string opc,
           string asm, list<dag> pattern>
   : AI2<opcod, oops, iops, f, opc, asm, pattern> {
@@ -199,6 +208,15 @@ class AI2ldb<bits<4> opcod, dag oops, dag iops, Format f, string opc,
   let Inst{22}    = 1; // B bit
   let Inst{24}    = 1; // P bit
 }
+class AXI2ldb<bits<4> opcod, dag oops, dag iops, Format f, string asm,
+           list<dag> pattern>
+  : XI<opcod, oops, iops, AddrMode2, Size4Bytes, IndexModeNone, f, asm,
+       "", pattern> {
+  let Inst{20}    = 1; // L bit
+  let Inst{21}    = 0; // W bit
+  let Inst{22}    = 1; // B bit
+  let Inst{24}    = 1; // P bit
+}
 
 // stores
 class AI2stw<bits<4> opcod, dag oops, dag iops, Format f, string opc,
@@ -209,6 +227,15 @@ class AI2stw<bits<4> opcod, dag oops, dag iops, Format f, string opc,
   let Inst{22}    = 0; // B bit
   let Inst{24}    = 1; // P bit
 }
+class AXI2stw<bits<4> opcod, dag oops, dag iops, Format f, string asm,
+           list<dag> pattern>
+  : XI<opcod, oops, iops, AddrMode2, Size4Bytes, IndexModeNone, f, asm,
+       "", pattern> {
+  let Inst{20}    = 0; // L bit
+  let Inst{21}    = 0; // W bit
+  let Inst{22}    = 0; // B bit
+  let Inst{24}    = 1; // P bit
+}
 class AI2stb<bits<4> opcod, dag oops, dag iops, Format f, string opc,
           string asm, list<dag> pattern>
   : AI2<opcod, oops, iops, f, opc, asm, pattern> {
@@ -217,6 +244,15 @@ class AI2stb<bits<4> opcod, dag oops, dag iops, Format f, string opc,
   let Inst{22}    = 1; // B bit
   let Inst{24}    = 1; // P bit
 }
+class AXI2stb<bits<4> opcod, dag oops, dag iops, Format f, string asm,
+           list<dag> pattern>
+  : XI<opcod, oops, iops, AddrMode2, Size4Bytes, IndexModeNone, f, asm,
+       "", pattern> {
+  let Inst{20}    = 0; // L bit
+  let Inst{21}    = 0; // W bit
+  let Inst{22}    = 1; // B bit
+  let Inst{24}    = 1; // P bit
+}
 
 // Pre-indexed loads
 class AI2ldwpr<bits<4> opcod, dag oops, dag iops, Format f, string opc,
@@ -321,6 +357,18 @@ class AI3ldh<bits<4> opcod, dag oops, dag iops, Format f, string opc,
   let Inst{21}    = 0; // W bit
   let Inst{24}    = 1; // P bit
 }
+class AXI3ldh<bits<4> opcod, dag oops, dag iops, Format f, string asm,
+           list<dag> pattern>
+  : XI<opcod, oops, iops, AddrMode3, Size4Bytes, IndexModeNone, f, asm,
+       "", pattern> {
+  let Inst{4}     = 1;
+  let Inst{5}     = 1; // H bit
+  let Inst{6}     = 0; // S bit
+  let Inst{7}     = 1;
+  let Inst{20}    = 1; // L bit
+  let Inst{21}    = 0; // W bit
+  let Inst{24}    = 1; // P bit
+}
 class AI3ldsh<bits<4> opcod, dag oops, dag iops, Format f, string opc,
           string asm, list<dag> pattern>
   : I<opcod, oops, iops, AddrMode3, Size4Bytes, IndexModeNone, f, opc,
@@ -333,6 +381,18 @@ class AI3ldsh<bits<4> opcod, dag oops, dag iops, Format f, string opc,
   let Inst{21}    = 0; // W bit
   let Inst{24}    = 1; // P bit
 }
+class AXI3ldsh<bits<4> opcod, dag oops, dag iops, Format f, string asm,
+           list<dag> pattern>
+  : XI<opcod, oops, iops, AddrMode3, Size4Bytes, IndexModeNone, f, asm,
+       "", pattern> {
+  let Inst{4}     = 1;
+  let Inst{5}     = 1; // H bit
+  let Inst{6}     = 1; // S bit
+  let Inst{7}     = 1;
+  let Inst{20}    = 1; // L bit
+  let Inst{21}    = 0; // W bit
+  let Inst{24}    = 1; // P bit
+}
 class AI3ldsb<bits<4> opcod, dag oops, dag iops, Format f, string opc,
           string asm, list<dag> pattern>
   : I<opcod, oops, iops, AddrMode3, Size4Bytes, IndexModeNone, f, opc,
@@ -345,6 +405,18 @@ class AI3ldsb<bits<4> opcod, dag oops, dag iops, Format f, string opc,
   let Inst{21}    = 0; // W bit
   let Inst{24}    = 1; // P bit
 }
+class AXI3ldsb<bits<4> opcod, dag oops, dag iops, Format f, string asm,
+           list<dag> pattern>
+  : XI<opcod, oops, iops, AddrMode3, Size4Bytes, IndexModeNone, f, asm,
+       "", pattern> {
+  let Inst{4}     = 1;
+  let Inst{5}     = 0; // H bit
+  let Inst{6}     = 1; // S bit
+  let Inst{7}     = 1;
+  let Inst{20}    = 1; // L bit
+  let Inst{21}    = 0; // W bit
+  let Inst{24}    = 1; // P bit
+}
 class AI3ldd<bits<4> opcod, dag oops, dag iops, Format f, string opc,
           string asm, list<dag> pattern>
   : I<opcod, oops, iops, AddrMode3, Size4Bytes, IndexModeNone, f, opc,
@@ -371,6 +443,18 @@ class AI3sth<bits<4> opcod, dag oops, dag iops, Format f, string opc,
   let Inst{21}    = 0; // W bit
   let Inst{24}    = 1; // P bit
 }
+class AXI3sth<bits<4> opcod, dag oops, dag iops, Format f, string asm,
+           list<dag> pattern>
+  : XI<opcod, oops, iops, AddrMode3, Size4Bytes, IndexModeNone, f, asm,
+       "", pattern> {
+  let Inst{4}     = 1;
+  let Inst{5}     = 1; // H bit
+  let Inst{6}     = 0; // S bit
+  let Inst{7}     = 1;
+  let Inst{20}    = 0; // L bit
+  let Inst{21}    = 0; // W bit
+  let Inst{24}    = 1; // P bit
+}
 class AI3std<bits<4> opcod, dag oops, dag iops, Format f, string opc,
           string asm, list<dag> pattern>
   : I<opcod, oops, iops, AddrMode3, Size4Bytes, IndexModeNone, f, opc,
diff --git a/llvm/lib/Target/ARM/ARMInstrInfo.td b/llvm/lib/Target/ARM/ARMInstrInfo.td
index 37a35ad7b42a..dbcc4b19b80b 100644
--- a/llvm/lib/Target/ARM/ARMInstrInfo.td
+++ b/llvm/lib/Target/ARM/ARMInstrInfo.td
@@ -469,44 +469,44 @@ def PICADD : AXI1<0x0, (outs GPR:$dst), (ins GPR:$a, pclabel:$cp, pred:$p),
 
 let AddedComplexity = 10 in {
 let isSimpleLoad = 1 in
-def PICLD   : AXI2<0x0, (outs GPR:$dst), (ins addrmodepc:$addr, pred:$p),
+def PICLD   : AXI2ldw<0x0, (outs GPR:$dst), (ins addrmodepc:$addr, pred:$p),
                   Pseudo, "${addr:label}:\n\tldr$p $dst, $addr",
                   [(set GPR:$dst, (load addrmodepc:$addr))]>;
 
-def PICLDZH : AXI3<0x0, (outs GPR:$dst), (ins addrmodepc:$addr, pred:$p),
+def PICLDZH : AXI3ldh<0x0, (outs GPR:$dst), (ins addrmodepc:$addr, pred:$p),
                   Pseudo, "${addr:label}:\n\tldr${p}h $dst, $addr",
                   [(set GPR:$dst, (zextloadi16 addrmodepc:$addr))]>;
 
-def PICLDZB : AXI2<0x0, (outs GPR:$dst), (ins addrmodepc:$addr, pred:$p),
+def PICLDZB : AXI2ldb<0x0, (outs GPR:$dst), (ins addrmodepc:$addr, pred:$p),
                   Pseudo, "${addr:label}:\n\tldr${p}b $dst, $addr",
                   [(set GPR:$dst, (zextloadi8 addrmodepc:$addr))]>;
 
-def PICLDH  : AXI3<0x0, (outs GPR:$dst), (ins addrmodepc:$addr, pred:$p),
+def PICLDH  : AXI3ldh<0x0, (outs GPR:$dst), (ins addrmodepc:$addr, pred:$p),
                   Pseudo, "${addr:label}:\n\tldr${p}h $dst, $addr",
                   [(set GPR:$dst, (extloadi16 addrmodepc:$addr))]>;
 
-def PICLDB  : AXI2<0x0, (outs GPR:$dst), (ins addrmodepc:$addr, pred:$p),
+def PICLDB  : AXI2ldb<0x0, (outs GPR:$dst), (ins addrmodepc:$addr, pred:$p),
                   Pseudo, "${addr:label}:\n\tldr${p}b $dst, $addr",
                   [(set GPR:$dst, (extloadi8 addrmodepc:$addr))]>;
 
-def PICLDSH : AXI3<0x0, (outs GPR:$dst), (ins addrmodepc:$addr, pred:$p),
+def PICLDSH : AXI3ldsh<0x0, (outs GPR:$dst), (ins addrmodepc:$addr, pred:$p),
                   Pseudo, "${addr:label}:\n\tldr${p}sh $dst, $addr",
                   [(set GPR:$dst, (sextloadi16 addrmodepc:$addr))]>;
 
-def PICLDSB : AXI3<0x0, (outs GPR:$dst), (ins addrmodepc:$addr, pred:$p),
+def PICLDSB : AXI3ldsb<0x0, (outs GPR:$dst), (ins addrmodepc:$addr, pred:$p),
                   Pseudo, "${addr:label}:\n\tldr${p}sb $dst, $addr",
                   [(set GPR:$dst, (sextloadi8 addrmodepc:$addr))]>;
 }
 let AddedComplexity = 10 in {
-def PICSTR  : AXI2<0x0, (outs), (ins GPR:$src, addrmodepc:$addr, pred:$p),
+def PICSTR  : AXI2stw<0x0, (outs), (ins GPR:$src, addrmodepc:$addr, pred:$p),
                Pseudo, "${addr:label}:\n\tstr$p $src, $addr",
                [(store GPR:$src, addrmodepc:$addr)]>;
 
-def PICSTRH : AXI3<0x0, (outs), (ins GPR:$src, addrmodepc:$addr, pred:$p),
+def PICSTRH : AXI3sth<0x0, (outs), (ins GPR:$src, addrmodepc:$addr, pred:$p),
                Pseudo, "${addr:label}:\n\tstr${p}h $src, $addr",
                [(truncstorei16 GPR:$src, addrmodepc:$addr)]>;
 
-def PICSTRB : AXI2<0x0, (outs), (ins GPR:$src, addrmodepc:$addr, pred:$p),
+def PICSTRB : AXI2stb<0x0, (outs), (ins GPR:$src, addrmodepc:$addr, pred:$p),
                Pseudo, "${addr:label}:\n\tstr${p}b $src, $addr",
                [(truncstorei8 GPR:$src, addrmodepc:$addr)]>;
 }