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authorNick Lewycky <nicholas@mxc.ca>2011-01-19 15:56:12 +0000
committerNick Lewycky <nicholas@mxc.ca>2011-01-19 15:56:12 +0000
commit73f565e7546f63900738cd31a2f956444e7bb544 (patch)
treea4f4b7bd91cabded85ad8c881055fb7195f80d28 /test
parentec91d52a77abfe3cf56413a11f47b3ee8e67e41e (diff)
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Add a missing SCEV simplification sext(zext x) --> zext x.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123832 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
-rw-r--r--test/Analysis/ScalarEvolution/fold.ll8
1 files changed, 8 insertions, 0 deletions
diff --git a/test/Analysis/ScalarEvolution/fold.ll b/test/Analysis/ScalarEvolution/fold.ll
new file mode 100644
index 0000000..202ddd4
--- /dev/null
+++ b/test/Analysis/ScalarEvolution/fold.ll
@@ -0,0 +1,8 @@
+; RUN: opt -analyze -scalar-evolution %s -S | FileCheck %s
+
+define i16 @test(i8 %x) {
+ %A = zext i8 %x to i12
+ %B = sext i12 %A to i16
+; CHECK: zext i8 %x to i16
+ ret i16 %B
+}