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arm: remove outdated comment concerning -ffixed-x18

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Clang 9 supports -ffixed-x18.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Heinrich Schuchardt 2020-05-27 20:04:23 +02:00 committed by Tom Rini
parent 7f642cb287
commit b87d8d6a0e
1 changed files with 0 additions and 4 deletions
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4
arch/arm/include/asm/global_data.h
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@ -96,10 +96,6 @@ static inline gd_t *get_gd(void)
gd_t *gd_ptr;
#ifdef CONFIG_ARM64
/*
* Make will already error that reserving x18 is not supported at the
* time of writing, clang: error: unknown argument: '-ffixed-x18'
*/
__asm__ volatile("mov %0, x18\n" : "=r" (gd_ptr));
#else
__asm__ volatile("mov %0, r9\n" : "=r" (gd_ptr));