X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=blobdiff_plain;f=test%2FCodeGen%2FX86%2Fextractelement-load.ll;h=8647599769361751e044c38b3dd900078b10bff8;hp=b5b320d4d4b1260a88ef20aabe31cd35fe1e53f6;hb=44efa200e23c54ece92cdff8f505d7014c5178b9;hpb=8699f5390bc96ade71419b2d1c15589c88207883

diff --git a/test/CodeGen/X86/extractelement-load.ll b/test/CodeGen/X86/extractelement-load.ll
index b5b320d4d4b..86475997693 100644
--- a/test/CodeGen/X86/extractelement-load.ll
+++ b/test/CodeGen/X86/extractelement-load.ll
@@ -46,3 +46,19 @@ bb:
   store double %.sroa.3.24.vec.extract, double* undef, align 8
   unreachable
 }
+
+; Case where a load is unary shuffled, then bitcast (to a type with the same
+; number of elements) before extractelement.
+; This is testing for an assertion - the extraction was assuming that the undef
+; second shuffle operand was a post-bitcast type instead of a pre-bitcast type.
+define i64 @t4(<2 x double>* %a) {
+; CHECK-LABEL: t4:
+; CHECK: mov
+; CHECK: ret
+  %b = load <2 x double>* %a, align 16
+  %c = shufflevector <2 x double> %b, <2 x double> %b, <2 x i32> <i32 1, i32 0>
+  %d = bitcast <2 x double> %c to <2 x i64>
+  %e = extractelement <2 x i64> %d, i32 1
+  ret i64 %e
+}
+