Temporarily Revert "Add basic loop fusion pass."

As it's causing some bot failures (and per request from kbarton).

This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda.

llvm-svn: 358546

3 files changed, 0 insertions, 184 deletions

diff --git a/llvm/test/Transforms/CalledValuePropagation/simple-arguments.ll b/llvm/test/Transforms/CalledValuePropagation/simple-arguments.ll
deleted file mode 100644
index 34274f3b348..00000000000
--- a/llvm/test/Transforms/CalledValuePropagation/simple-arguments.ll
+++ /dev/null
@@ -1,83 +0,0 @@
-; RUN: opt -called-value-propagation -S < %s | FileCheck %s
-
-target triple = "aarch64-unknown-linux-gnueabi"
-
-
-; This test checks that we propagate the functions through arguments and attach
-; !callees metadata to the call. Such metadata can enable optimizations of this
-; code sequence.
-;
-; For example, the code below a illustrates a contrived sort-like algorithm
-; that accepts a pointer to a comparison function. Since the indirect call to
-; the comparison function has only two targets, the call can be promoted to two
-; direct calls using an if-then-else. The loop can then be unswitched and the
-; called functions inlined. This essentially produces two loops, once
-; specialized for each comparison.
-;
-; CHECK:  %tmp3 = call i1 %cmp(i64* %tmp1, i64* %tmp2), !callees ![[MD:[0-9]+]]
-; CHECK: ![[MD]] = !{i1 (i64*, i64*)* @ugt, i1 (i64*, i64*)* @ule}
-;
-define void @test_argument(i64* %x, i64 %n, i1 %flag) {
-entry:
-  %tmp0 = sub i64 %n, 1
-  br i1 %flag, label %then, label %else
-
-then:
-  call void @arrange_data(i64* %x, i64 %tmp0, i1 (i64*, i64*)* @ugt)
-  br label %merge
-
-else:
-  call void @arrange_data(i64* %x, i64 %tmp0, i1 (i64*, i64*)* @ule)
-  br label %merge
-
-merge:
-  ret void
-}
-
-define internal void @arrange_data(i64* %x, i64 %n, i1 (i64*, i64*)* %cmp) {
-entry:
-  %tmp0 = icmp eq i64 %n, 1
-  br i1 %tmp0, label %merge, label %for.body
-
-for.body:
-  %i = phi i64 [ 0, %entry ], [ %i.next, %cmp.false ]
-  %i.next = add nuw nsw i64 %i, 1
-  %tmp1 = getelementptr inbounds i64, i64* %x, i64 %i
-  %tmp2 = getelementptr inbounds i64, i64* %x, i64 %i.next
-  %tmp3 = call i1 %cmp(i64* %tmp1, i64* %tmp2)
-  br i1 %tmp3, label %cmp.true, label %cmp.false
-
-cmp.true:
-  call void @swap(i64* %tmp1, i64* %tmp2)
-  br label %cmp.false
-
-cmp.false:
-  %cond = icmp slt i64 %i.next, %n
-  br i1 %cond, label %for.body, label %for.end
-
-for.end:
-  %tmp4 = sub i64 %n, 1
-  call void @arrange_data(i64* %x, i64 %tmp4, i1 (i64*, i64*)* %cmp)
-  br label %merge
-
-merge:
-  ret void
-}
-
-define internal i1 @ugt(i64* %a, i64* %b) {
-entry:
-  %tmp0 = load i64, i64* %a
-  %tmp1 = load i64, i64* %b
-  %tmp2 = icmp ugt i64 %tmp0, %tmp1
-  ret i1 %tmp2
-}
-
-define internal i1 @ule(i64* %a, i64* %b) {
-entry:
-  %tmp0 = load i64, i64* %a
-  %tmp1 = load i64, i64* %b
-  %tmp2 = icmp ule i64 %tmp0, %tmp1
-  ret i1 %tmp2
-}
-
-declare void @swap(i64*, i64*)
diff --git a/llvm/test/Transforms/CalledValuePropagation/simple-memory.ll b/llvm/test/Transforms/CalledValuePropagation/simple-memory.ll
deleted file mode 100644
index e42f10c1436..00000000000
--- a/llvm/test/Transforms/CalledValuePropagation/simple-memory.ll
+++ /dev/null
@@ -1,62 +0,0 @@
-; RUN: opt -called-value-propagation -S < %s | FileCheck %s
-
-target triple = "aarch64-unknown-linux-gnueabi"
-
-@global_function = internal unnamed_addr global void ()* null, align 8
-@global_array = common unnamed_addr global i64* null, align 8
-
-; This test checks that we propagate the functions through an internal global
-; variable, and attach !callees metadata to the call. Such metadata can enable
-; optimizations of this code sequence.
-;
-; For example, since both of the targeted functions have the "nounwind" and
-; "readnone" function attributes, LICM can be made to move the call and the
-; function pointer load outside the loop. This would then enable the loop
-; vectorizer to vectorize the sum reduction.
-;
-; CHECK: call void %tmp0(), !callees ![[MD:[0-9]+]]
-; CHECK: ![[MD]] = !{void ()* @invariant_1, void ()* @invariant_2}
-;
-define i64 @test_memory_entry(i64 %n, i1 %flag) {
-entry:
-  br i1 %flag, label %then, label %else
-
-then:
-  store void ()* @invariant_1, void ()** @global_function
-  br label %merge
-
-else:
-  store void ()* @invariant_2, void ()** @global_function
-  br label %merge
-
-merge:
-  %tmp1 = call i64 @test_memory(i64 %n)
-  ret i64 %tmp1
-}
-
-define internal i64 @test_memory(i64 %n) {
-entry:
-  %array = load i64*, i64** @global_array
-  br label %for.body
-
-for.body:
-  %i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
-  %r = phi i64 [ 0, %entry ], [ %tmp3, %for.body ]
-  %tmp0 = load void ()*, void ()** @global_function
-  call void %tmp0()
-  %tmp1 = getelementptr inbounds i64, i64* %array, i64 %i
-  %tmp2 = load i64, i64* %tmp1
-  %tmp3 = add i64 %tmp2, %r
-  %i.next = add nuw nsw i64 %i, 1
-  %cond = icmp slt i64 %i.next, %n
-  br i1 %cond, label %for.body, label %for.end
-
-for.end:
-  %tmp4 = phi i64 [ %tmp3, %for.body ]
-  ret i64 %tmp4
-}
-
-declare void @invariant_1() #0
-declare void @invariant_2() #0
-
-attributes #0 = { nounwind readnone }
diff --git a/llvm/test/Transforms/CalledValuePropagation/simple-select.ll b/llvm/test/Transforms/CalledValuePropagation/simple-select.ll
deleted file mode 100644
index 3d6c7dad7c8..00000000000
--- a/llvm/test/Transforms/CalledValuePropagation/simple-select.ll
+++ /dev/null
@@ -1,39 +0,0 @@
-; RUN: opt -called-value-propagation -S < %s | FileCheck %s
-
-target triple = "aarch64-unknown-linux-gnueabi"
-
-@global_function = internal unnamed_addr global void ()* null, align 8
-@global_scalar = internal unnamed_addr global i64 zeroinitializer
-
-; This test checks that we propagate the functions through a select
-; instruction, and attach !callees metadata to the call. Such metadata can
-; enable optimizations of this code sequence.
-;
-; For example, since both of the targeted functions have the "norecurse"
-; attribute, the function attributes pass can be made to infer that
-; "@test_select" is also norecurse. This would allow the globals optimizer to
-; localize "@global_scalar". The function could then be further simplified to
-; always return the constant "1", eliminating the load and store instructions.
-;
-; CHECK: call void %tmp0(), !callees ![[MD:[0-9]+]]
-; CHECK: ![[MD]] = !{void ()* @norecurse_1, void ()* @norecurse_2}
-;
-define i64 @test_select_entry(i1 %flag) {
-entry:
-  %tmp0 = call i64 @test_select(i1 %flag)
-  ret i64 %tmp0
-}
-
-define internal i64 @test_select(i1 %flag) {
-entry:
-  %tmp0 = select i1 %flag, void ()* @norecurse_1, void ()* @norecurse_2
-  store i64 1, i64* @global_scalar
-  call void %tmp0()
-  %tmp1 = load i64, i64* @global_scalar
-  ret i64 %tmp1
-}
-
-declare void @norecurse_1() #0
-declare void @norecurse_2() #0
-
-attributes #0 = { norecurse }