Revert "Fix PR24469 resulting from r245025 and re-enable dead store elimination across basicblocks."

This is causing bootstrap problems, e.g.: http://bb.pgr.jp/builders/clang-3stage-i686-linux/builds/2960

This reverts r245195.

llvm-svn: 245402

2 files changed, 0 insertions, 208 deletions

diff --git a/llvm/test/Transforms/DeadStoreElimination/cross_block_dse.ll b/llvm/test/Transforms/DeadStoreElimination/cross_block_dse.ll
deleted file mode 100644
index dfab8554559..00000000000
--- a/llvm/test/Transforms/DeadStoreElimination/cross_block_dse.ll
+++ /dev/null
@@ -1,104 +0,0 @@
-; RUN: opt < %s -basicaa -dse -S | FileCheck %s
-target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
-
-@x = common global i32 0
-@y = common global i32 0
-@a = external global i32
-@b = external global i32
-
-define void @test_01(i32 %N) {
-  %1 = alloca i32
-  store i32 %N, i32* %1
-  store i32 10, i32* @x
-  %2 = load i32, i32* %1
-  %3 = icmp ne i32 %2, 0
-  br i1 %3, label %4, label %5
-
-; <label>:4
-  store i32 5, i32* @x
-  br label %5
-
-; <label>:5
-  store i32 15, i32* @x
-  ret void
-}
-; CHECK-LABEL: @test_01(
-; CHECK-NOT: store i32 10, i32* @x
-; CHECK-NOT: store i32 5, i32* @x
-; CHECK: store i32 15, i32* @x
-
-
-define void @test_02(i32 %N) {
-  %1 = alloca i32
-  store i32 %N, i32* %1
-  store i32 10, i32* @x
-  %2 = load i32, i32* %1
-  %3 = icmp ne i32 %2, 0
-  br i1 %3, label %4, label %5
-
-; <label>:4
-  store i32 5, i32* @x
-  br label %7
-
-; <label>:5
-  %6 = load i32, i32* @x
-  store i32 %6, i32* @y
-  br label %7
-
-; <label>:7
-  store i32 15, i32* @x
-  ret void
-}
-; CHECK-LABEL: @test_02(
-; CHECK: store i32 10, i32* @x
-; CHECK-NOT: store i32 5, i32* @x
-; CHECK: store i32 %6, i32* @y
-
-
-define void @test_03(i32 %N) #0 {
-  %1 = alloca i32
-  store i32 %N, i32* %1
-  store i32 10, i32* @x
-  %2 = load i32, i32* %1
-  %3 = icmp ne i32 %2, 0
-  br i1 %3, label %4, label %6
-
-; <label>:4                                       ; preds = %0
-  %5 = load i32, i32* @x
-  store i32 %5, i32* @y
-  br label %6
-
-; <label>:6                                       ; preds = %4, %0
-  store i32 15, i32* @x
-  ret void
-}
-; CHECK-LABEL: @test_03(
-; CHECK: store i32 10, i32* @x
-; CHECK: store i32 %5, i32* @y
-; CHECK: store i32 15, i32* @x
-
-
-
-; Check we safely delete store i32 %g.02, i32* @b below.(PR24469)
-define void @test_04() {
-entry:
-  br i1 false, label %for.body, label %for.end.9
-
-for.cond.1.loopexit:                              ; preds = %for.body
-  store i32 0, i32* @b
-  %0 = load i32, i32* @a
-  br i1 false, label %for.body, label %for.end.9
-
-for.body:                                         ; preds = %for.cond.1.loopexit, %entry
-  %g.02 = phi i32 [ undef, %entry ], [ %0, %for.cond.1.loopexit ]
-  store i32 %g.02, i32* @b
-  br label %for.cond.1.loopexit
-
-for.end.9:                                        ; preds = %for.cond.1.loopexit, %entry
-  ret void
-}
-
-; CHECK-LABEL: @test_04(
-; CHECK-NOT: store i32 %g.02, i32* @b
-; CHECK-NOT: %g.02 = phi i32 [ undef, %entry ], [ %0, %for.cond.1.loopexit ]
-; CHECK-NOT: %0 = load i32, i32* @a
diff --git a/llvm/test/Transforms/DeadStoreElimination/cross_block_dse_loop.ll b/llvm/test/Transforms/DeadStoreElimination/cross_block_dse_loop.ll
deleted file mode 100644
index 769a561b664..00000000000
--- a/llvm/test/Transforms/DeadStoreElimination/cross_block_dse_loop.ll
+++ /dev/null
@@ -1,104 +0,0 @@
-; RUN: opt < %s -basicaa -dse -S | FileCheck %s
-target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
-
-@A = common global [100 x i32] zeroinitializer, align 16
-@x = common global i32 0
-
-; Negative Test case-
-;void foo(int N) {
-;  A[0] = N;
-;  for(int i=0;i<N;++i)
-;    A[i]+=i;
-;  A[0] = 10;
-;}
-;; Stores should not be optimized away.
-
-define void @test_01(i32 %N) #0 {
-  %1 = alloca i32
-  %i = alloca i32
-  store i32 %N, i32* %1
-  %2 = load i32, i32* %1
-  store i32 %2, i32* getelementptr inbounds ([100 x i32], [100 x i32]* @A, i32 0, i64 0)
-  store i32 0, i32* %i
-  br label %3
-
-; <label>:3                                       ; preds = %14, %0
-  %4 = load i32, i32* %i
-  %5 = load i32, i32* %1
-  %6 = icmp slt i32 %4, %5
-  br i1 %6, label %7, label %17
-
-; <label>:7                                       ; preds = %3
-  %8 = load i32, i32* %i
-  %9 = load i32, i32* %i
-  %10 = sext i32 %9 to i64
-  %11 = getelementptr inbounds [100 x i32], [100 x i32]* @A, i32 0, i64 %10
-  %12 = load i32, i32* %11
-  %13 = add nsw i32 %12, %8
-  store i32 %13, i32* %11
-  br label %14
-
-; <label>:14                                      ; preds = %7
-  %15 = load i32, i32* %i
-  %16 = add nsw i32 %15, 1
-  store i32 %16, i32* %i
-  br label %3
-
-; <label>:17                                      ; preds = %3
-  store i32 10, i32* getelementptr inbounds ([100 x i32], [100 x i32]* @A, i32 0, i64 0)
-  ret void
-}
-; CHECK-LABEL: @test_01(
-; CHECK: store i32 %2, i32* getelementptr inbounds ([100 x i32], [100 x i32]* @A, i32 0, i64 0)
-; CHECK: store i32 %13, i32* %11
-; CHECK: store i32 10, i32* getelementptr inbounds ([100 x i32], [100 x i32]* @A, i32 0, i64 0)
-
-
-; Postive Test case-
-;void foo(int N) {
-;  A[0] = N;
-;  for(int i=0;i<N;++i)
-;    A[i]=i;
-;  A[0] = 10;
-;}
-;; Stores should not be optimized away.
-define void @test_02(i32 %N) #0 {
-  %1 = alloca i32
-  %i = alloca i32
-  store i32 %N, i32* %1
-  %2 = load i32, i32* %1
-  store i32 %2, i32* getelementptr inbounds ([100 x i32], [100 x i32]* @A, i32 0, i64 0)
-  store i32 0, i32* %i
-  br label %3
-
-; <label>:3                                       ; preds = %12, %0
-  %4 = load i32, i32* %i
-  %5 = load i32, i32* %1
-  %6 = icmp slt i32 %4, %5
-  br i1 %6, label %7, label %15
-
-; <label>:7                                       ; preds = %3
-  %8 = load i32, i32* %i
-  %9 = load i32, i32* %i
-  %10 = sext i32 %9 to i64
-  %11 = getelementptr inbounds [100 x i32], [100 x i32]* @A, i32 0, i64 %10
-  store i32 %8, i32* %11
-  br label %12
-
-; <label>:12                                      ; preds = %7
-  %13 = load i32, i32* %i
-  %14 = add nsw i32 %13, 1
-  store i32 %14, i32* %i
-  br label %3
-
-; <label>:15                                      ; preds = %3
-  store i32 10, i32* getelementptr inbounds ([100 x i32], [100 x i32]* @A, i32 0, i64 0)
-  ret void
-}
-
-; CHECK-LABEL: @test_02(
-; CHECK-NOT: store i32 %2, i32* getelementptr inbounds ([100 x i32], [100 x i32]* @A, i32 0, i64 0)
-; CHECK: store i32 %7, i32* %10
-; CHECK: store i32 10, i32* getelementptr inbounds ([100 x i32], [100 x i32]* @A, i32 0, i64 0)
-
-