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 705fcea76aed9d08c5ccd4fdb0c076de41db35a8..23920e1bf0a9c1dd917037915e36ee32fd5ccbbb 100644 (file)
--- 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))),