[clang][codegen][NFC] Make test patterns more permissive.

See the discussion in:
http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20190909/692736.html

llvm-svn: 371522

Author: legrosbuffle

clang/test/CodeGenCXX/auto-var-init.cpp

@@ -1042,8 +1042,7 @@ TEST_UNINIT(intptr4, int*[4]);
 // CHECK:            %uninit = alloca [4 x i32*], align
 // CHECK-NEXT:       call void @{{.*}}used{{.*}}%uninit)
 // PATTERN-O1-LABEL: @test_intptr4_uninit()
-// PATTERN-O1:       %1 = bitcast [4 x i32*]* %uninit to i8*
-// PATTERN-O1-NEXT:  call void @llvm.memset.p0i8.i64(i8* nonnull align 16  dereferenceable(32) %1, i8 -86, i64 32, i1 false)
+// PATTERN-O1:  call void @llvm.memset.p0i8.i64(i8* nonnull align 16  dereferenceable(32) %{{[0-9*]}}, i8 -86, i64 32, i1 false)
 // ZERO-LABEL:       @test_intptr4_uninit()
 // ZERO:             call void @llvm.memset{{.*}}, i8 0,