[SystemZ] Fix regression in test macro-prefix-map-lambda.cpp

[Kai]

Summary

The failing test comes from https://reviews.llvm.org/D152570.
Root cause of the failure is that a string constant on SystemZ
has an alignment of 2, not 1. The CSKY target has a similar problem.
The solution is to replace the fixed number with a regex.

[zibi]

LGTM

[tuliom]

This solves the issue on SystemZ.
Thanks!

[uweigand]

LGTM as well.

clang/test/CodeGenCXX/macro-prefix-map-lambda.cpp

 
 int main() {
   auto *s = lambdatest([](){});
-// CHECK: @"__PRETTY_FUNCTION__._Z10lambdatestIZ4mainE3$_0EDaOT_" = private unnamed_addr constant [{{[0-9]+}} x i8] c"auto lambdatest(f &&) [f = (lambda at ./UNLIKELY_PATH/empty{{/|\\\\}}{{.*}}.cpp:[[#@LINE-1]]:24)]\00", align 1
+// CHECK: @"__PRETTY_FUNCTION__._Z10lambdatestIZ4mainE3$_0EDaOT_" = private unnamed_addr constant [{{[0-9]+}} x i8] c"auto lambdatest(f &&) [f = (lambda at ./UNLIKELY_PATH/empty{{/|\\\\}}{{.*}}.cpp:[[#@LINE-1]]:24)]\00", align {{[0-9]+}}
 
   return 0;
 }