Add support for more detailed metadce expectations (#8583)

Includes support for automatically updating the expectation files.

Initial this is only for the "sent" functions, but can be extended
to imports and exports later.

tests/other/metadce/hello_libcxx.cpp

@@ -0,0 +1,13 @@
+// Copyright 2012 The Emscripten Authors.  All rights reserved.
+// Emscripten is available under two separate licenses, the MIT license and the
+// University of Illinois/NCSA Open Source License.  Both these licenses can be
+// found in the LICENSE file.
+
+#include <iostream>
+
+int main()
+{
+  std::cout << "hello, world!" << std::endl;
+  return 0;
+}
+

tests/other/metadce/hello_libcxx_O2.sent

@@ -0,0 +1,33 @@
+DYNAMICTOP_PTR
+_ZSt18uncaught_exceptionv
+__cxa_atexit
+__cxa_uncaught_exception
+__lock
+__map_file
+__setErrNo
+__syscall140
+__syscall145
+__syscall146
+__syscall54
+__syscall6
+__syscall91
+__unlock
+_addDays
+_arraySum
+_isLeapYear
+abort
+abortOnCannotGrowMemory
+atexit
+emscripten_get_heap_size
+emscripten_memcpy_big
+emscripten_resize_heap
+fabs
+getenv
+memcpy
+memset
+pthread_cond_broadcast
+pthread_cond_wait
+sbrk
+setTempRet0
+strftime
+strftime_l

tests/other/metadce/hello_libcxx_fastcomp_O2.sent

@@ -0,0 +1,34 @@
+DYNAMICTOP_PTR
+___cxa_find_matching_catch
+___cxa_free_exception
+___cxa_uncaught_exception
+___gxx_personality_v0
+___lock
+___map_file
+___resumeException
+___setErrNo
+___syscall140
+___syscall145
+___syscall146
+___syscall54
+___syscall6
+___syscall91
+___unlock
+__addDays
+__arraySum
+__isLeapYear
+_abort
+_emscripten_get_heap_size
+_emscripten_memcpy_big
+_emscripten_resize_heap
+_getenv
+_llvm_stackrestore
+_llvm_stacksave
+_pthread_cond_wait
+_strftime
+_strftime_l
+abort
+abortOnCannotGrowMemory
+getTempRet0
+setTempRet0
+tempDoublePtr

tests/other/metadce/hello_libcxx_fastcomp_O2_EMULATED_FUNCTION_POINTERS.sent

@@ -0,0 +1,34 @@
+DYNAMICTOP_PTR
+___cxa_find_matching_catch
+___cxa_free_exception
+___cxa_uncaught_exception
+___gxx_personality_v0
+___lock
+___map_file
+___resumeException
+___setErrNo
+___syscall140
+___syscall145
+___syscall146
+___syscall54
+___syscall6
+___syscall91
+___unlock
+__addDays
+__arraySum
+__isLeapYear
+_abort
+_emscripten_get_heap_size
+_emscripten_memcpy_big
+_emscripten_resize_heap
+_getenv
+_llvm_stackrestore
+_llvm_stacksave
+_pthread_cond_wait
+_strftime
+_strftime_l
+abort
+abortOnCannotGrowMemory
+getTempRet0
+setTempRet0
+tempDoublePtr

tests/other/metadce/hello_world.cpp

@@ -0,0 +1,14 @@
+// Copyright 2011 The Emscripten Authors.  All rights reserved.
+// Emscripten is available under two separate licenses, the MIT license and the
+// University of Illinois/NCSA Open Source License.  Both these licenses can be
+// found in the LICENSE file.
+
+#include <stdio.h>
+
+class Test {}; // This will fail in C mode
+
+int main() {
+  printf("hello, world!\n");
+  return 0;
+}
+

tests/other/metadce/hello_world.sent

@@ -0,0 +1,17 @@
+DYNAMICTOP_PTR
+__lock
+__setErrNo
+__syscall140
+__syscall146
+__syscall54
+__syscall6
+__unlock
+abortOnCannotGrowMemory
+emscripten_get_heap_size
+emscripten_memcpy_big
+emscripten_resize_heap
+flush_NO_FILESYSTEM
+memcpy
+memset
+sbrk
+setTempRet0

tests/other/metadce/hello_world_O1.sent

@@ -0,0 +1,15 @@
+DYNAMICTOP_PTR
+__setErrNo
+__syscall140
+__syscall146
+__syscall54
+__syscall6
+abortOnCannotGrowMemory
+emscripten_get_heap_size
+emscripten_memcpy_big
+emscripten_resize_heap
+flush_NO_FILESYSTEM
+memcpy
+memset
+sbrk
+setTempRet0

tests/other/metadce/hello_world_O2.sent

@@ -0,0 +1,15 @@
+DYNAMICTOP_PTR
+__setErrNo
+__syscall140
+__syscall146
+__syscall54
+__syscall6
+abortOnCannotGrowMemory
+emscripten_get_heap_size
+emscripten_memcpy_big
+emscripten_resize_heap
+flush_NO_FILESYSTEM
+memcpy
+memset
+sbrk
+setTempRet0

tests/other/metadce/hello_world_O3.sent

@@ -0,0 +1,5 @@
+a
+b
+c
+d
+e