[llvm-readobj] [ARMWinEH] Print set_fp/add_fp differently in epilogues

[mstorsjo]

Summary

This matches how e.g. stp/ldp and other opcodes are printed differently for epilogues.

Also add a missing --strict-whitespace in an existing test that was added explicitly for testing vertical alignment.

[efriedma]

LGTM

[MaskRay]

Also add a missing --strict-whitespace in an existing test that was added explicitly for testing vertical alignment.

Without --match-full-lines, leading and trailing space changes cannot be detected. For // CHECK: a b, you can ensure the spaces between a and b are 2, but you cannot test the indentation.

[mstorsjo]

In D87363#2264369, @MaskRay wrote:

Also add a missing --strict-whitespace in an existing test that was added explicitly for testing vertical alignment.

Without --match-full-lines, leading and trailing space changes cannot be detected. For // CHECK: a b, you can ensure the spaces between a and b are 2, but you cannot test the indentation.

Yeah - here, --strict-whitespace is enough for the thing that the testcase wanted to test (the amount of spaces between the hex opcodes and their interpretation on the right hand side, which was fixed in D86523).