[PATCH, GCC/ARM] Complete legend for ARM register allocation in arm.h

[Thomas Preudhomme]

[resending with gcc-patches this time]

Hi,

The comment describing ARM register allocation in arm.h contains 3 keys:
S, F and *. The legend only explains S and *, this patch remedies that.

ChangeLog entry is as follows:

*** gcc/ChangeLog ***

2017-05-24  Thomas Preud'homme  <thomas.preudho...@arm.com>

        * config/arm/arm.h: explain F symbol found in description of ARM
        register allocation in its legend.

Is this ok for trunk?

Best regards,

Thomas


diff --git a/gcc/config/arm/arm.h b/gcc/config/arm/arm.h
index 1821f48ed7ed45ffa5503541426921ec0d0a3736..d0b448d273cb3683f06512fea80ebf65df587ab1 100644
--- a/gcc/config/arm/arm.h
+++ b/gcc/config/arm/arm.h
@@ -690,7 +690,7 @@ extern int arm_arch_cmse;
 /* Standard register usage.  */
 
 /* Register allocation in ARM Procedure Call Standard
-   (S - saved over call).
+   (S - saved over call, F - Frame-related).
 
 	r0	   *	argument word/integer result
 	r1-r3		argument word