From 51cf733427c6076bce76a057b4e9b593f3a8b407 Mon Sep 17 00:00:00 2001
From: Joerg Sonnenberger <joerg@bec.de>
Date: Mon, 4 Aug 2014 22:56:42 +0000
Subject: [PATCH] Add simplified aliases for access to DCCR, ICCR, DEAR and ESR

llvm-svn: 214797
---
 llvm/lib/Target/PowerPC/PPCInstrInfo.td   | 12 ++++++++++++
 llvm/test/MC/PowerPC/ppc64-encoding-4xx.s | 28 ++++++++++++++++++++++++++++
 2 files changed, 40 insertions(+)

diff --git a/llvm/lib/Target/PowerPC/PPCInstrInfo.td b/llvm/lib/Target/PowerPC/PPCInstrInfo.td
index 70b61a5..7c50a3b 100644
--- a/llvm/lib/Target/PowerPC/PPCInstrInfo.td
+++ b/llvm/lib/Target/PowerPC/PPCInstrInfo.td
@@ -3262,6 +3262,18 @@ foreach BATR = 0-3 in {
                     Requires<[IsPPC6xx]>;
 }
 
+def : InstAlias<"mtdccr $Rx", (MTSPR 1018, gprc:$Rx)>, Requires<[IsPPC4xx]>;
+def : InstAlias<"mfdccr $Rx", (MFSPR gprc:$Rx, 1018)>, Requires<[IsPPC4xx]>;
+
+def : InstAlias<"mticcr $Rx", (MTSPR 1019, gprc:$Rx)>, Requires<[IsPPC4xx]>;
+def : InstAlias<"mficcr $Rx", (MFSPR gprc:$Rx, 1019)>, Requires<[IsPPC4xx]>;
+
+def : InstAlias<"mtdear $Rx", (MTSPR 981, gprc:$Rx)>, Requires<[IsPPC4xx]>;
+def : InstAlias<"mfdear $Rx", (MFSPR gprc:$Rx, 981)>, Requires<[IsPPC4xx]>;
+
+def : InstAlias<"mtesr $Rx", (MTSPR 980, gprc:$Rx)>, Requires<[IsPPC4xx]>;
+def : InstAlias<"mfesr $Rx", (MFSPR gprc:$Rx, 980)>, Requires<[IsPPC4xx]>;
+
 def LAx : PPCAsmPseudo<"la $rA, $addr", (ins gprc:$rA, memri:$addr)>;
 
 def SUBI : PPCAsmPseudo<"subi $rA, $rB, $imm",
diff --git a/llvm/test/MC/PowerPC/ppc64-encoding-4xx.s b/llvm/test/MC/PowerPC/ppc64-encoding-4xx.s
index 3eb60e0..8e010e3 100644
--- a/llvm/test/MC/PowerPC/ppc64-encoding-4xx.s
+++ b/llvm/test/MC/PowerPC/ppc64-encoding-4xx.s
@@ -42,3 +42,31 @@
 # CHECK-BE: tlbsx. 2, 3, 1                   # encoding: [0x7c,0x43,0x0f,0x25]
 # CHECK-LE: tlbsx. 2, 3, 1                   # encoding: [0x25,0x0f,0x43,0x7c]
             tlbsx. %r2, %r3, %r1
+
+# CHECK-BE: mfspr 2, 1018                    # encoding: [0x7c,0x5a,0xfa,0xa6]
+# CHECK-LE: mfspr 2, 1018                    # encoding: [0xa6,0xfa,0x5a,0x7c]
+            mfdccr %r2
+# CHECK-BE: mtspr 1018, 2                    # encoding: [0x7c,0x5a,0xfb,0xa6]
+# CHECK-LE: mtspr 1018, 2                    # encoding: [0xa6,0xfb,0x5a,0x7c]
+            mtdccr %r2
+
+# CHECK-BE: mfspr 2, 1019                    # encoding: [0x7c,0x5b,0xfa,0xa6]
+# CHECK-LE: mfspr 2, 1019                    # encoding: [0xa6,0xfa,0x5b,0x7c]
+            mficcr %r2
+# CHECK-BE: mtspr 1019, 2                    # encoding: [0x7c,0x5b,0xfb,0xa6]
+# CHECK-LE: mtspr 1019, 2                    # encoding: [0xa6,0xfb,0x5b,0x7c]
+            mticcr %r2
+
+# CHECK-BE: mfspr 2, 981                    # encoding: [0x7c,0x55,0xf2,0xa6]
+# CHECK-LE: mfspr 2, 981                    # encoding: [0xa6,0xf2,0x55,0x7c]
+            mfdear %r2
+# CHECK-BE: mtspr 981, 2                    # encoding: [0x7c,0x55,0xf3,0xa6]
+# CHECK-LE: mtspr 981, 2                    # encoding: [0xa6,0xf3,0x55,0x7c]
+            mtdear %r2
+
+# CHECK-BE: mfspr 2, 980                    # encoding: [0x7c,0x54,0xf2,0xa6]
+# CHECK-LE: mfspr 2, 980                    # encoding: [0xa6,0xf2,0x54,0x7c]
+            mfesr %r2
+# CHECK-BE: mtspr 980, 2                    # encoding: [0x7c,0x54,0xf3,0xa6]
+# CHECK-LE: mtspr 980, 2                    # encoding: [0xa6,0xf3,0x54,0x7c]
+            mtesr %r2
-- 
2.7.4