x86] adjust test constants to maintain coverage; NFC

Increment (add 1) could be transformed to sub -1, and we'd lose coverage for these patterns.

llvm-svn: 305646
diff --git a/llvm/test/CodeGen/X86/avx2-vbroadcast.ll b/llvm/test/CodeGen/X86/avx2-vbroadcast.ll
index ba47e2b..971d03a 100644
--- a/llvm/test/CodeGen/X86/avx2-vbroadcast.ll
+++ b/llvm/test/CodeGen/X86/avx2-vbroadcast.ll
@@ -653,7 +653,7 @@
 ; X64-AVX512VL-NEXT:    vpaddd {{.*}}(%rip){1to8}, %ymm0, %ymm0
 ; X64-AVX512VL-NEXT:    retq
 entry:
-  %g = add <8 x i32> %in, <i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1>
+  %g = add <8 x i32> %in, <i32 2, i32 2, i32 2, i32 2, i32 2, i32 2, i32 2, i32 2>
   ret <8 x i32> %g
 }