`-frecord-gcc-switches` missing flags after gcc 10.4

Question

I used to use -frecord-gcc-switches to embed a version string in a binary.

With gcc 10.4, when compiling some c code with -Wall -Werror -O3 -frecord-gcc-switches -DVERSION_THING=123hello, I'd get the following output from readelf -p .GCC.command.line

String dump of section '.GCC.command.line':
  [     0]  -fdiagnostics-color=always
  [    1b]  -imultiarch x86_64-linux-gnu
  [    38]  -iprefix /opt/compiler-explorer/gcc-10.4.0/bin/../lib/gcc/x86_64-linux-gnu/10.4.0/
  [    8b]  -D VERSION_THING=123hello
  [    a5]  /app/example.c
  [    b4]  -mtune=generic
  [    c3]  -march=x86-64
  [    d1]  -g
  [    d4]  -O3
  [    d8]  -Wall
  [    de]  -Werror
  [    e6]  -frecord-gcc-switches

However, with gcc 11.1 and later, I get this

String dump of section '.GCC.command.line':
  [     0]  GNU C17 11.1.0 -mtune=generic -march=x86-64 -g -O3

Does anybody know where I should be looking to see what's changed between versions and why with regard to -frecord-gcc-switches and if it's possible to get the old behaviour back?