From 5662bc959a0544bbaf9c64ab5640cc6fc430cc93 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sun, 17 Apr 2011 22:12:55 +0000
Subject: [PATCH] switch the rest of the x86 immediate patterns over to
 ImmLeaf, simplifying them and exposing more information to tblgen.  It would
 be nice if other target authors adopted this as well, particularly arm since
 it has fastisel.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129676 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/X86InstrInfo.td | 26 +++++++++-----------------
 1 file changed, 9 insertions(+), 17 deletions(-)

diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index e487e33e738..c278e0921ec 100644
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -481,26 +481,18 @@ def X86_COND_O   : PatLeaf<(i8 13)>;
 def X86_COND_P   : PatLeaf<(i8 14)>; // alt. COND_PE
 def X86_COND_S   : PatLeaf<(i8 15)>;
 
-def immSext8 : PatLeaf<(imm), [{ return immSext8(N); }]>;
-
-def i16immSExt8  : PatLeaf<(i16 immSext8)>;
-def i32immSExt8  : PatLeaf<(i32 immSext8)>;
-def i64immSExt8  : PatLeaf<(i64 immSext8)>;
+def i16immSExt8  : ImmLeaf<i16, [{ return Imm == (char)Imm; }]>;
+def i32immSExt8  : ImmLeaf<i32, [{ return Imm == (char)Imm; }]>;
+def i64immSExt8  : ImmLeaf<i64, [{ return Imm == (char)Imm; }]>;
+def i64immSExt32 : ImmLeaf<i64, [{ return Imm == (int32_t)Imm; }]>;
 
 
-def i64immSExt32  : ImmLeaf<i64, [{ return Imm == (int32_t)Imm; }]>;
+// i64immZExt32 predicate - True if the 64-bit immediate fits in a 32-bit
+// unsigned field.
+def i64immZExt32 : ImmLeaf<i64, [{ return (uint64_t)Imm == (uint32_t)Imm; }]>;
 
-
-
-def i64immZExt32  : PatLeaf<(i64 imm), [{
-  // i64immZExt32 predicate - True if the 64-bit immediate fits in a 32-bit
-  // unsignedsign extended field.
-  return (uint64_t)N->getZExtValue() == (uint32_t)N->getZExtValue();
-}]>;
-
-def i64immZExt32SExt8 : PatLeaf<(i64 imm), [{
-    uint64_t v = N->getZExtValue();
-    return v == (uint32_t)v && (int32_t)v == (int8_t)v;
+def i64immZExt32SExt8 : ImmLeaf<i64, [{
+  return (uint64_t)Imm == (uint32_t)Imm && (int32_t)Imm == (int8_t)Imm;
 }]>;
 
 // Helper fragments for loads.