From e82ea128f94feba3b2ecdc4596e4694f7ec60fd2 Mon Sep 17 00:00:00 2001 From: Doug Evans Date: Tue, 14 Mar 1995 18:35:45 +0000 Subject: [PATCH] (arm_volatile_func): Install the government approved version of the comment. From-SVN: r9181 --- gcc/config/arm/arm.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index 9995b060ee70..99961becdae1 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -2719,12 +2719,11 @@ output_return_instruction (operand, really_return) return ""; } -/* Return nonzero if optimizing and the current function is volatile - (ie: `noreturn'). - Since such functions don't return call-saved registers don't need to - be saved. Making such an optimization may seem dubious at first glance. - It was put in for a particular user who was using them to do context - switching and obviously wanted it to be fast. */ +/* Return nonzero if optimizing and the current function is volatile. + Such functions never return, and many memory cycles can be saved + by not storing register values that will never be needed again. + This optimization was added to speed up context switching in a + kernel application. */ int arm_volatile_func () -- 2.43.5