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authorStephen Hines <srhines@google.com>2014-12-01 14:51:49 -0800
committerStephen Hines <srhines@google.com>2014-12-02 16:08:10 -0800
commit37ed9c199ca639565f6ce88105f9e39e898d82d0 (patch)
tree8fb36d3910e3ee4c4e1b7422f4f017108efc52f5 /test/Transforms/IndVarSimplify/use-range-metadata.ll
parentd2327b22152ced7bc46dc629fc908959e8a52d03 (diff)
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Update aosp/master LLVM for rebase to r222494.
Change-Id: Ic787f5e0124df789bd26f3f24680f45e678eef2d
Diffstat (limited to 'test/Transforms/IndVarSimplify/use-range-metadata.ll')
-rw-r--r--test/Transforms/IndVarSimplify/use-range-metadata.ll37
1 files changed, 37 insertions, 0 deletions
diff --git a/test/Transforms/IndVarSimplify/use-range-metadata.ll b/test/Transforms/IndVarSimplify/use-range-metadata.ll
new file mode 100644
index 0000000..7ac4f11
--- /dev/null
+++ b/test/Transforms/IndVarSimplify/use-range-metadata.ll
@@ -0,0 +1,37 @@
+;; RUN: opt -S < %s -indvars | FileCheck %s
+
+;; Check if IndVarSimplify understands !range metadata.
+
+declare void @abort()
+
+define i1 @iterate(i32* nocapture readonly %buffer) {
+entry:
+ %length = load i32* %buffer, !range !0
+ br label %loop.preheader
+
+loop.preheader:
+ br label %loop
+
+loop:
+ %idx = phi i32 [ %idx.inc, %loop.next ], [ 0, %loop.preheader ]
+ %oob.pred = icmp slt i32 %idx, %length
+ br i1 %oob.pred, label %loop.next, label %oob
+; CHECK: br i1 true, label %loop.next, label %oob
+
+loop.next:
+ %idx.inc = add i32 %idx, 1
+ %exit.pred = icmp slt i32 %idx.inc, %length
+ br i1 %exit.pred, label %loop, label %abort.loopexit
+
+abort.loopexit:
+ br label %abort
+
+abort:
+ ret i1 false
+
+oob:
+ tail call void @abort()
+ ret i1 false
+}
+
+!0 = metadata !{i32 1, i32 100}