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, 27 insertions, 0 deletions

diff --git a/llvm/test/Transforms/LoopVectorize/X86/struct-store.ll b/llvm/test/Transforms/LoopVectorize/X86/struct-store.ll
new file mode 100644
index 00000000000..4ff3b0e4c05
--- /dev/null
+++ b/llvm/test/Transforms/LoopVectorize/X86/struct-store.ll
@@ -0,0 +1,27 @@
+; RUN: opt < %s -loop-vectorize -mtriple=x86_64-unknown-linux-gnu -S
+
+; Make sure we are not crashing on this one.
+
+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"
+target triple = "x86_64-unknown-linux-gnu"
+
+@glbl = external global [16 x { i64, i64 }], align 16
+
+declare void @fn()
+
+define void @test() {
+entry:
+  br label %loop
+
+loop:
+  %indvars.iv = phi i64 [ %indvars.iv.next, %loop ], [ 0, %entry ]
+  %tmp = getelementptr inbounds [16 x { i64, i64 }], [16 x { i64, i64 }]* @glbl, i64 0, i64 %indvars.iv
+  store { i64, i64 } { i64 ptrtoint (void ()* @fn to i64), i64 0 }, { i64, i64 }* %tmp, align 16
+  %indvars.iv.next = add i64 %indvars.iv, 1
+  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
+  %exitcond = icmp ne i32 %lftr.wideiv, 16
+  br i1 %exitcond, label %loop, label %exit
+
+exit:
+  ret void
+}