diff test/CodeGen/X86/extractelement-load.ll @ 0:95c75e76d11b LLVM3.4

LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
parents
children 54457678186b
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/CodeGen/X86/extractelement-load.ll	Thu Dec 12 13:56:28 2013 +0900
@@ -0,0 +1,25 @@
+; RUN: llc < %s -march=x86 -mattr=+sse2 -mcpu=yonah | FileCheck %s
+; RUN: llc < %s -march=x86-64 -mattr=+sse2 -mcpu=core2 | FileCheck %s
+
+define i32 @t(<2 x i64>* %val) nounwind  {
+; CHECK-LABEL: t:
+; CHECK-NOT: movd
+; CHECK: movl 8(
+; CHECK-NEXT: ret
+	%tmp2 = load <2 x i64>* %val, align 16		; <<2 x i64>> [#uses=1]
+	%tmp3 = bitcast <2 x i64> %tmp2 to <4 x i32>		; <<4 x i32>> [#uses=1]
+	%tmp4 = extractelement <4 x i32> %tmp3, i32 2		; <i32> [#uses=1]
+	ret i32 %tmp4
+}
+
+; Case where extractelement of load ends up as undef.
+; (Making sure this doesn't crash.)
+define i32 @t2(<8 x i32>* %xp) {
+; CHECK-LABEL: t2:
+; CHECK: ret
+  %x = load <8 x i32>* %xp
+  %Shuff68 = shufflevector <8 x i32> %x, <8 x i32> undef, <8 x i32> <i32
+undef, i32 7, i32 9, i32 undef, i32 13, i32 15, i32 1, i32 3>
+  %y = extractelement <8 x i32> %Shuff68, i32 0
+  ret i32 %y
+}