[msan][test] Add another target("aarch64.svcount") test case

This shows a crash that happens because MSan tries to check the shadow
of target("aarch64.svcount").

This is the followup to
#164315. This also does a
drive-by fix of those test cases, to use 'not opt' instead of XFAIL.

Forked from llvm/test/CodeGen/AArch64/sme2-intrinsics-add.ll

Author: thurstond

llvm/test/Instrumentation/MemorySanitizer/AArch64/sme-aarch64-svcount-mini.ll

@@ -1,7 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt -S -passes=msan -mattr=+sme -o - %s | FileCheck %s
-
-; XFAIL: *
+; RUN: not opt -S -passes=msan -mattr=+sme -o - %s 2>&1
 
 ; Forked from llvm/test/CodeGen/AArch64/sme-aarch64-svcount.ll
 ; Manually minimized to show MSan leads to a compiler crash

llvm/test/Instrumentation/MemorySanitizer/AArch64/sme-aarch64-svcount.ll

@@ -1,7 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt -S -passes=msan -mattr=+sme -o - %s | FileCheck %s
-
-; XFAIL: *
+; RUN: not opt -S -passes=msan -mattr=+sme -o - %s
 
 ; Forked from llvm/test/CodeGen/AArch64/sme-aarch64-svcount.ll
 

llvm/test/Instrumentation/MemorySanitizer/AArch64/sme2-intrinsics-add-mini.ll

@@ -0,0 +1,14 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: not opt -print-on-crash -S -passes=msan -mattr=+sme2 -mattr=+sme-i16i64 -mattr=+sme-f64f64 -o - %s
+
+; Forked from llvm/test/CodeGen/AArch64/sme2-intrinsics-add.ll
+; Manually reduced to show MSan leads to a compiler crash
+
+target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
+target triple = "aarch64--linux-android9001"
+
+define void @multi_vector_add_za_vg1x4_f32_tuple(i64 %stride, ptr %ptr) sanitize_memory {
+  %0 = tail call target("aarch64.svcount") @llvm.aarch64.sve.ptrue.c8()
+  %1 = tail call { <vscale x 4 x float>, <vscale x 4 x float>, <vscale x 4 x float>, <vscale x 4 x float> } @llvm.aarch64.sve.ld1.pn.x4.nxv4f32(target("aarch64.svcount") %0, ptr %ptr)
+  ret void
+}