gvn now hoists this load out of the hot non-call path.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61028 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 29 deletions

diff --git a/lib/Target/README.txt b/lib/Target/README.txt
index e0cab2af49..c19fd9c122 100644
--- a/lib/Target/README.txt
+++ b/lib/Target/README.txt
@@ -1404,32 +1404,3 @@ void foo (int a, struct T b)
 
 //===---------------------------------------------------------------------===//
 
-This C++ file:
-void g(); struct A { int n; int m; A& operator++(void) { ++n; if (n == m) g(); 
-return *this; }    A() : n(0), m(0) { } friend bool operator!=(A const& a1, 
-A const& a2) { return a1.n != a2.n; } }; void testfunction(A& iter) { A const 
-end; while (iter != end) ++iter; }
-
-Compiles down to:
-
-bb:		; preds = %bb3.backedge, %bb.nph
-	%.rle = phi i32 [ %1, %bb.nph ], [ %7, %bb3.backedge ]		; <i32> [#uses=1]
-	%4 = add i32 %.rle, 1		; <i32> [#uses=2]
-	store i32 %4, i32* %0, align 4
-	%5 = load i32* %3, align 4		; <i32> [#uses=1]
-	%6 = icmp eq i32 %4, %5		; <i1> [#uses=1]
-	br i1 %6, label %bb1, label %bb3.backedge
-
-bb1:		; preds = %bb
-	tail call void @_Z1gv()
-	br label %bb3.backedge
-
-bb3.backedge:		; preds = %bb, %bb1
-	%7 = load i32* %0, align 4		; <i32> [#uses=2]
-
-
-The %7 load is partially redundant with the store of %4 to %0, GVN's PRE 
-should remove it, but it doesn't apply to memory objects.
-
-//===---------------------------------------------------------------------===//
-