Vendor import of llvm release_31 branch r155985:

http://llvm.org/svn/llvm-project/llvm/branches/release_31@155985

2 files changed, 35 insertions, 1 deletions

diff --git a/test/Transforms/LoopStrengthReduce/X86/2012-01-13-phielim.ll b/test/Transforms/LoopStrengthReduce/X86/2012-01-13-phielim.ll
index 2dcaab8..ed32ca8 100644
--- a/test/Transforms/LoopStrengthReduce/X86/2012-01-13-phielim.ll
+++ b/test/Transforms/LoopStrengthReduce/X86/2012-01-13-phielim.ll
@@ -61,7 +61,7 @@ exit:                                 ; preds = %cond.true29.i, %cond.true.i
 ; CHECK: @test2
 ; CHECK: %entry
 ; CHECK-NOT: mov
-; CHECK: jne
+; CHECK: je
 define void @test2(i32 %n) nounwind uwtable {
 entry:
   br i1 undef, label %while.end, label %for.cond468
diff --git a/test/Transforms/LoopStrengthReduce/pr12691.ll b/test/Transforms/LoopStrengthReduce/pr12691.ll
new file mode 100644
index 0000000..8399434
--- /dev/null
+++ b/test/Transforms/LoopStrengthReduce/pr12691.ll
@@ -0,0 +1,34 @@
+; RUN: opt < %s -loop-reduce -S | FileCheck %s
+
+@d = common global i32 0, align 4
+
+define void @fn2(i32 %x) nounwind uwtable {
+entry:
+  br label %for.cond
+
+for.cond:
+  %g.0 = phi i32 [ 0, %entry ], [ %dec, %for.cond ]
+  %tobool = icmp eq i32 %x, 0
+  %dec = add nsw i32 %g.0, -1
+  br i1 %tobool, label %for.cond, label %for.end
+
+for.end:
+; CHECK:  %tmp1 = load i32* @d, align 4
+; CHECK-NEXT:  %tmp2 = load i32* @d, align 4
+; CHECK-NEXT:  %0 = sub i32 %tmp1, %tmp2
+
+  %tmp1 = load i32* @d, align 4
+  %add = add nsw i32 %tmp1, %g.0
+  %tmp2 = load i32* @d, align 4
+  %tobool26 = icmp eq i32 %x, 0
+  br i1 %tobool26, label %for.end5, label %for.body.lr.ph
+
+for.body.lr.ph:
+  %tobool3 = icmp ne i32 %tmp2, %add
+  br label %for.end5
+
+for.end5:
+  ret void
+}
+
+