From 0919a916bf152e08617e67f9d4b03db4769076e2 Mon Sep 17 00:00:00 2001
From: David Goodwin <david_goodwin@apple.com>
Date: Thu, 25 Jun 2009 23:11:21 +0000
Subject: Use MVN for ~t2_so_imm immediates.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74223 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/ARM/ARMInstrThumb2.td  |  3 +++
 test/CodeGen/Thumb2/thumb2-mvn.ll | 27 +++++++++++++++++++++++++++
 2 files changed, 30 insertions(+)
 create mode 100644 test/CodeGen/Thumb2/thumb2-mvn.ll

diff --git a/lib/Target/ARM/ARMInstrThumb2.td b/lib/Target/ARM/ARMInstrThumb2.td
index 2b63324..3a44bbd 100644
--- a/lib/Target/ARM/ARMInstrThumb2.td
+++ b/lib/Target/ARM/ARMInstrThumb2.td
@@ -434,6 +434,9 @@ def : Thumb2Pat<(or      GPR:$src, t2_so_imm_not:$imm),
 
 defm t2MVN  : T2I_un_irs  <"mvn", UnOpFrag<(not node:$Src)>, 1, 1>;
 
+def : Thumb2Pat<(t2_so_imm_not:$src),
+                (t2MVNi t2_so_imm_not:$src)>;
+
 // A8.6.17  BFC - Bitfield clear
 // FIXME: Also available in ARM mode.
 let Constraints = "$src = $dst" in
diff --git a/test/CodeGen/Thumb2/thumb2-mvn.ll b/test/CodeGen/Thumb2/thumb2-mvn.ll
new file mode 100644
index 0000000..967e03f
--- /dev/null
+++ b/test/CodeGen/Thumb2/thumb2-mvn.ll
@@ -0,0 +1,27 @@
+; RUN: llvm-as < %s | llc | grep {mvn\\W*r\[0-9\],\\W*#\[0-9\]*} | grep {#187\\|#11141290\\|#3422604288\\|#1114112} | Count 4
+
+target triple = "thumbv7-apple-darwin"
+
+; 0x000000bb = 187
+define i32 @f1(i32 %a) {
+    %tmp = xor i32 4294967295, 187
+    ret i32 %tmp
+}
+
+; 0x00aa00aa = 11141290
+define i32 @f2(i32 %a) {
+    %tmp = xor i32 4294967295, 11141290 
+    ret i32 %tmp
+}
+
+; 0xcc00cc00 = 3422604288
+define i32 @f3(i32 %a) {
+    %tmp = xor i32 4294967295, 3422604288
+    ret i32 %tmp
+}
+
+; 0x00110000 = 1114112
+define i32 @f5(i32 %a) {
+    %tmp = xor i32 4294967295, 1114112
+    ret i32 %tmp
+}
-- 
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