Matthew Malcomson <matthew.malcom...@arm.com> writes:
> When using `check-function-bodies`, the subroutine `parse_function_bodies`
> uses
> the `fluff` regexp to remove uninteresting assembly lines.
>
> Arm targets generate assembly with some lines prefixed by `@`, these lines are
> left by this process.
>
> As an example of some lines prefixed by `@': the assembly output from the
> `stacktest1` function in "bfloat16_simd_3_1.c" is:
>
> .align 2
> .global stacktest1
> .arch armv8.2-a
> .syntax unified
> .arm
> .fpu neon-fp-armv8
> .type stacktest1, %function
> stacktest1:
> @ args = 0, pretend = 0, frame = 8
> @ frame_needed = 0, uses_anonymous_args = 0
> @ link register save eliminated.
> sub sp, sp, #8
> add r3, sp, #6
> vst1.16 {d0[0]}, [r3]
> vld1.16 {d0[0]}, [r3]
> add sp, sp, #8
> @ sp needed
> bx lr
> .size stacktest1, .-stacktest1
>
>
>
> It seems that previous uses of `check-function-bodies` in the arm backend have
> avoided problems with such lines since they use the `...` regexp in each place
> such fluff occurs.
>
> I'm currently writing a patch that I'd like to match the entire function body,
> so I'd like to remove such `@` lines automatically.
>
> gcc/testsuite/ChangeLog:
>
> 2020-03-10 Matthew Malcomson <matthew.malcom...@arm.com>
>
> * lib/scanasm.exp (parse_function_bodies): Lines starting with '@' also
> counted as fluff.
OK, thanks.
Richard
