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diff test/CodeGen/ARM/undef-sext.ll @ 0:95c75e76d11b

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
parents
children afa8332a0e37
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/CodeGen/ARM/undef-sext.ll	Thu Dec 12 13:56:28 2013 +0900
@@ -0,0 +1,14 @@
+; RUN: llc < %s -mtriple=armv7-apple-darwin -mcpu=cortex-a8 | FileCheck %s
+
+; No need to sign-extend undef.
+
+define i32 @t(i32* %a) nounwind {
+entry:
+; CHECK-LABEL: t:
+; CHECK: ldr r0, [r0]
+; CHECK: bx lr
+  %0 = sext i16 undef to i32
+  %1 = getelementptr inbounds i32* %a, i32 %0
+  %2 = load i32* %1, align 4
+  ret i32 %2
+}