From 461e0b352d5e403b2d0fad59028f9e0681f13c7a Mon Sep 17 00:00:00 2001
From: Craig Topper <craig.topper@gmail.com>
Date: Tue, 18 Apr 2017 19:13:27 +0000
Subject: [PATCH] [APInt] Inline the single word case of lshrInPlace similar to
 what we do for <<=.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@300577 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/ADT/APInt.h | 14 +++++++++++++-
 lib/Support/APInt.cpp    | 10 +---------
 2 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/include/llvm/ADT/APInt.h b/include/llvm/ADT/APInt.h
index 11fb489eaa7..59b3ba0e685 100644
--- a/include/llvm/ADT/APInt.h
+++ b/include/llvm/ADT/APInt.h
@@ -191,6 +191,9 @@ private:
   /// out-of-line slow case for shl
   void shlSlowCase(unsigned ShiftAmt);
 
+  /// out-of-line slow case for lshr.
+  void lshrSlowCase(unsigned ShiftAmt);
+
   /// out-of-line slow case for operator=
   APInt &AssignSlowCase(const APInt &RHS);
 
@@ -889,7 +892,16 @@ public:
   }
 
   /// Logical right-shift this APInt by ShiftAmt in place.
-  void lshrInPlace(unsigned ShiftAmt);
+  void lshrInPlace(unsigned ShiftAmt) {
+    if (isSingleWord()) {
+      if (ShiftAmt >= BitWidth)
+        VAL = 0;
+      else
+        VAL >>= ShiftAmt;
+      return;
+    }
+    lshrSlowCase(ShiftAmt);
+  }
 
   /// \brief Left-shift function.
   ///
diff --git a/lib/Support/APInt.cpp b/lib/Support/APInt.cpp
index 8b23179b44b..6303dd84907 100644
--- a/lib/Support/APInt.cpp
+++ b/lib/Support/APInt.cpp
@@ -1140,15 +1140,7 @@ void APInt::lshrInPlace(const APInt &shiftAmt) {
 
 /// Logical right-shift this APInt by shiftAmt.
 /// @brief Logical right-shift function.
-void APInt::lshrInPlace(unsigned ShiftAmt) {
-  if (isSingleWord()) {
-    if (ShiftAmt >= BitWidth)
-      VAL = 0;
-    else
-      VAL >>= ShiftAmt;
-    return;
-  }
-
+void APInt::lshrSlowCase(unsigned ShiftAmt) {
   tcShiftRight(pVal, getNumWords(), ShiftAmt);
 }
 
-- 
2.11.0