[X86] Add knownbits vector MUL test
In preparation for demandedelts support
llvm-svn: 286463
diff --git a/llvm/test/CodeGen/X86/known-bits-vector.ll b/llvm/test/CodeGen/X86/known-bits-vector.ll
index 0ba3cb1..3306313 100644
--- a/llvm/test/CodeGen/X86/known-bits-vector.ll
+++ b/llvm/test/CodeGen/X86/known-bits-vector.ll
@@ -169,3 +169,26 @@
%4 = lshr <4 x i32> %3, <i32 30, i32 30, i32 30, i32 30>
ret <4 x i32> %4
}
+
+define <4 x i32> @knownbits_mask_mul_shuffle_shl(<4 x i32> %a0, <4 x i32> %a1) nounwind {
+; X32-LABEL: knownbits_mask_mul_shuffle_shl:
+; X32: # BB#0:
+; X32-NEXT: vpand {{\.LCPI.*}}, %xmm0, %xmm0
+; X32-NEXT: vpmulld %xmm0, %xmm1, %xmm0
+; X32-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[0,0,3,3]
+; X32-NEXT: vpslld $22, %xmm0, %xmm0
+; X32-NEXT: retl
+;
+; X64-LABEL: knownbits_mask_mul_shuffle_shl:
+; X64: # BB#0:
+; X64-NEXT: vpand {{.*}}(%rip), %xmm0, %xmm0
+; X64-NEXT: vpmulld %xmm0, %xmm1, %xmm0
+; X64-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[0,0,3,3]
+; X64-NEXT: vpslld $22, %xmm0, %xmm0
+; X64-NEXT: retq
+ %1 = and <4 x i32> %a0, <i32 -65536, i32 -7, i32 -7, i32 -65536>
+ %2 = mul <4 x i32> %a1, %1
+ %3 = shufflevector <4 x i32> %2, <4 x i32> undef, <4 x i32> <i32 0, i32 0, i32 3, i32 3>
+ %4 = shl <4 x i32> %3, <i32 22, i32 22, i32 22, i32 22>
+ ret <4 x i32> %4
+}