From: Chris Lattner <sabre@nondot.org>
Date: Sat, 24 Sep 2005 00:41:58 +0000 (+0000)
Subject: Teach the dag isel generator how to construct arbitrary immediates.  The
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ea874f3306c26ed425c05b2de202a176e2f32ed2;p=oota-llvm.git

Teach the dag isel generator how to construct arbitrary immediates.  The
generated isel now tries li then lis, then lis+ori.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23418 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/PowerPC/PPCInstrInfo.td b/lib/Target/PowerPC/PPCInstrInfo.td
index 705fcea76ae..23920e1bf0a 100644
--- a/lib/Target/PowerPC/PPCInstrInfo.td
+++ b/lib/Target/PowerPC/PPCInstrInfo.td
@@ -774,7 +774,12 @@ def : Pat<(or GPRC:$in, imm:$imm),
 def : Pat<(xor GPRC:$in, imm:$imm),
           (XORIS (XORI GPRC:$in, (LO16 imm:$imm)), (HI16 imm:$imm))>;
 
-// Same as above, but using a temporary.
+// Arbitrary immediate support.
+def : Pat<(i32 imm:$imm),
+          (ORI (LIS (HI16 imm:$imm)), (LO16 imm:$imm))>;
+
+
+// Same as above, but using a temporary. FIXME: implement temporaries :)
 /*
 def : Pattern<(xor GPRC:$in, imm:$imm),
               [(set GPRC:$tmp, (XORI GPRC:$in, (LO16 imm:$imm))),