Revert "Temporarily Revert "Add basic loop fusion pass.""

The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552

1 files changed, 37 insertions, 0 deletions

diff --git a/llvm/test/Transforms/LoopVectorize/runtime-check-readonly.ll b/llvm/test/Transforms/LoopVectorize/runtime-check-readonly.ll
new file mode 100644
index 00000000000..b37d94c0c32
--- /dev/null
+++ b/llvm/test/Transforms/LoopVectorize/runtime-check-readonly.ll
@@ -0,0 +1,37 @@
+; RUN: opt < %s  -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -dce -instcombine -S | FileCheck %s
+
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
+
+;CHECK-LABEL: @add_ints(
+;CHECK: br
+;CHECK: getelementptr
+;CHECK-DAG: getelementptr
+;CHECK-DAG: icmp ugt
+;CHECK-DAG: icmp ugt
+;CHECK-DAG: icmp ugt
+;CHECK-DAG: icmp ugt
+;CHECK-DAG: and
+;CHECK-DAG: and
+;CHECK: br
+;CHECK: ret
+define void @add_ints(i32* nocapture %A, i32* nocapture %B, i32* nocapture %C) {
+entry:
+  br label %for.body
+
+for.body:
+  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
+  %arrayidx = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
+  %0 = load i32, i32* %arrayidx, align 4
+  %arrayidx2 = getelementptr inbounds i32, i32* %C, i64 %indvars.iv
+  %1 = load i32, i32* %arrayidx2, align 4
+  %add = add nsw i32 %1, %0
+  %arrayidx4 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
+  store i32 %add, i32* %arrayidx4, align 4
+  %indvars.iv.next = add i64 %indvars.iv, 1
+  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
+  %exitcond = icmp eq i32 %lftr.wideiv, 200
+  br i1 %exitcond, label %for.end, label %for.body
+
+for.end:
+  ret void
+}