Added some basic test cases for r61209

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61210 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 44 insertions, 0 deletions

diff --git a/test/CodeGen/X86/widen_cast-1.ll b/test/CodeGen/X86/widen_cast-1.ll
new file mode 100644
index 0000000000..ed8d27cde6
--- /dev/null
+++ b/test/CodeGen/X86/widen_cast-1.ll
@@ -0,0 +1,44 @@
+; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse42 -disable-mmx -o %t -f
+; RUN: grep paddw  %t | count 1
+; RUN: grep movd  %t | count 1
+; RUN: grep pextrd  %t | count 1
+
+; bitcast a v4i16 to v2i32
+
+define void @convert(<2 x i32>* %dst, <4 x i16>* %src) nounwind {
+entry:
+	%dst.addr = alloca <2 x i32>*		; <<2 x i32>**> [#uses=2]
+	%src.addr = alloca <4 x i16>*		; <<4 x i16>**> [#uses=2]
+	%i = alloca i32, align 4		; <i32*> [#uses=6]
+	store <2 x i32>* %dst, <2 x i32>** %dst.addr
+	store <4 x i16>* %src, <4 x i16>** %src.addr
+	store i32 0, i32* %i
+	br label %forcond
+
+forcond:		; preds = %forinc, %entry
+	%tmp = load i32* %i		; <i32> [#uses=1]
+	%cmp = icmp slt i32 %tmp, 4		; <i1> [#uses=1]
+	br i1 %cmp, label %forbody, label %afterfor
+
+forbody:		; preds = %forcond
+	%tmp1 = load i32* %i		; <i32> [#uses=1]
+	%tmp2 = load <2 x i32>** %dst.addr		; <<2 x i32>*> [#uses=1]
+	%arrayidx = getelementptr <2 x i32>* %tmp2, i32 %tmp1		; <<2 x i32>*> [#uses=1]
+	%tmp3 = load i32* %i		; <i32> [#uses=1]
+	%tmp4 = load <4 x i16>** %src.addr		; <<4 x i16>*> [#uses=1]
+	%arrayidx5 = getelementptr <4 x i16>* %tmp4, i32 %tmp3		; <<4 x i16>*> [#uses=1]
+	%tmp6 = load <4 x i16>* %arrayidx5		; <<4 x i16>> [#uses=1]
+	%add = add <4 x i16> %tmp6, < i16 1, i16 1, i16 1, i16 1 >		; <<4 x i16>> [#uses=1]
+	%conv = bitcast <4 x i16> %add to <2 x i32>		; <<2 x i32>> [#uses=1]
+	store <2 x i32> %conv, <2 x i32>* %arrayidx
+	br label %forinc
+
+forinc:		; preds = %forbody
+	%tmp7 = load i32* %i		; <i32> [#uses=1]
+	%inc = add i32 %tmp7, 1		; <i32> [#uses=1]
+	store i32 %inc, i32* %i
+	br label %forcond
+
+afterfor:		; preds = %forcond
+	ret void
+}