[InstCombine] enable optimization of casted vector xor instructions

This is part of the payoff for the refactoring in:
http://reviews.llvm.org/rL261649
http://reviews.llvm.org/rL261707

In addition to removing a pile of duplicated code, the xor case was
missing the optimization for vector types because it checked
"SrcTy->isIntegerTy()" rather than "SrcTy->isIntOrIntVectorTy()"
like 'and' and 'or' were already doing.

This solves part of:
https://llvm.org/bugs/show_bug.cgi?id=26702

llvm-svn: 261750

1 files changed, 2 insertions, 3 deletions

diff --git a/llvm/test/Transforms/InstCombine/bitcast.ll b/llvm/test/Transforms/InstCombine/bitcast.ll
index 9fcb092f6ac..c29f4edbc06 100644
--- a/llvm/test/Transforms/InstCombine/bitcast.ll
+++ b/llvm/test/Transforms/InstCombine/bitcast.ll
@@ -25,9 +25,8 @@ define <2 x i32> @xor_two_vector_bitcasts(<1 x i64> %a, <1 x i64> %b) {
   ret <2 x i32> %t3
 
 ; CHECK-LABEL: @xor_two_vector_bitcasts(
-; CHECK-NEXT:  %t1 = bitcast <1 x i64> %a to <2 x i32>
-; CHECK-NEXT:  %t2 = bitcast <1 x i64> %b to <2 x i32>
-; CHECK-NEXT:  %t3 = xor <2 x i32> %t1, %t2
+; CHECK-NEXT:  %t31 = xor <1 x i64> %a, %b
+; CHECK-NEXT:  %t3 = bitcast <1 x i64> %t31 to <2 x i32>
 ; CHECK-NEXT:  ret <2 x i32> %t3
 }